Department: Pathobiology & Population Sciences

Campus: Hawkshead

Research Groups: Host-Pathogen Interactions and Vaccinology, IRLFS (Research Programme), CPCS (Research Programme)

Simon is Professor of Veterinary Anatomic Pathology and Head of Pathology. Simon is a Fellow of the Royal College of Pathologists (FRCPath), board certified by the American College of Veterinary Pathologists (DipACVP) and a recognised Royal College of Veterinary Surgeons (RCVS) Specialist in Veterinary Pathology with diagsnotic and research expertise in respiratory, gatrointestinal and experimental histopathology.

Simon is a Senior Examiner for the Royal College of Pathologists and is incoming Chair of the Anatomic Pathology Examination Assembly & Adminstration Committee of the American College of Veterinary Pathologists (ACVP). He has previously served as President of the British Society of Veterinary Pathology (BSVP).

2002 BSc (Veterinary Pathology) First Class Hons, Royal Veterinary College, University of London 

2002 Leadership Programme for Veterinary Students at Cornell University College of Veterinary Medicine, Ithaca, New York. 

2004 Bachelor of Veterinary Science, University of Bristol 

2007 PhD, 'The pathogenesis of a novel canine respiratory coronavirus', Royal Veterinary College

2008-11, Anatomic Pathology Residency, Royal Veterinary College

2010 Fellow of Royal College of Pathologists (FRCPath) by examination

2012 Diplomate of the American College of Veterinary Pathologists (DipACVP)

2013 PGCert (Veterinary Education) and Fellow of the Higher Education Academy (FHEA)

2014-current RCVS Specialist in Veterinary Pathology

2015 Member of British Society of Veterinary Specialists

2016-2019 President of the Bristish Society of Veterinary Pathology (BSVP)

2016-current Visiting Professor, University of Las Palmas de Gran Canaria

2016-current ACVP Examination Committee Member

2017-current Editorial Board Member for Veterinary Pathology and Journal of Comparative Pathology

2018-current Visiting Professor, Universitat de Lleida, Spain

2019-current Visting Professor, South China Agricultural University, Guangzhou, China

2020-current Editor for Animals


Williams MJ, Wong HE, Priestnall SL, Szladovits B, Stapleton N, Hedley J. Anaplastic Sarcoma and Sertoli Cell Tumor in a Central Bearded Dragon (Pogona vitticeps). J Herpetol Med Surg. 2020 Jun 11;30(2):68-73. doi: 10.5818/18-04-154.1. PMID: 33633500; PMCID: PMC7116819.

Paraschou G, Adako GM, Priestnall SL, Burden FA. Suspensory Ligament Desmitis Caused by Onchocerca sp. in Three Donkeys. Vet Pathol. 2021 Mar;58(2):401-404. doi: 10.1177/0300985820978312. Epub 2020 Dec 28. PMID: 33356968.

Yale AD, Szladovits B, Stell AJ, Fitzgerald SD, Priestnall SL, Suarez-Bonnet A. High-Grade Cutaneous Mast Cell Tumour with Widespread Intrathoracic Metastasis and Neoplastic Pericardial Effusion in a Dog. J Comp Pathol. 2020 Oct;180:29-34. doi: 10.1016/j.jcpa.2020.08.006. Epub 2020 Sep 10. PMID: 33222871.

Milne G, Fujimoto C, Bean T, Peters HJ, Hemmington M, Taylor C, Fowkes RC, Martineau HM, Hamilton CM, Walker M, Mitchell JA, Léger E, Priestnall SL, Webster JP. Infectious Causation of Abnormal Host Behavior: Toxoplasma gondii and Its Potential Association With Dopey Fox Syndrome. Front Psychiatry. 2020 Sep 16;11:513536. doi: 10.3389/fpsyt.2020.513536. PMID: 33192643; PMCID: PMC7525129.

Moreira-Teixeira L, Stimpson PJ, Stavropoulos E, Hadebe S, Chakravarty P, Ioannou M, Aramburu IV, Herbert E, Priestnall SL, Suarez-Bonnet A, Sousa J, Fonseca KL, Wang Q, Vashakidze S, Rodríguez-Martínez P, Vilaplana C, Saraiva M, Papayannopoulos V, O'Garra A. Type I IFN exacerbates disease in tuberculosis- susceptible mice by inducing neutrophil-mediated lung inflammation and NETosis. Nat Commun. 2020 Nov 4;11(1):5566. doi: 10.1038/s41467-020-19412-6. PMID: 33149141; PMCID: PMC7643080.

Suárez-Bonnet A, Priestnall SL, Ramírez GA, Molín J, Jaber JR. Aberrant Expression of Cell Cycle Regulator 14-3-3-σ and E-Cadherin in a Metastatic Cholangiocarcinoma in a Vervet Monkey (Chlorocebus pygerythrus). J Comp Pathol. 2020 Aug;179:25-30. doi: 10.1016/j.jcpa.2020.07.001. Epub 2020 Aug 8. PMID: 32958143.

Suárez-Bonnet A, Priestnall SL, Ramírez GA, González-Sánchez C, Jaber JR. Scent (Apocrine) Gland Adenocarcinoma in a Wedge-Capped Capuchin Monkey (Cebus olivaceus): Histological and Immunohistochemical Features. J Comp Pathol. 2020 Aug;179:1-6. doi: 10.1016/j.jcpa.2020.07.002. Epub 2020 Aug 7. PMID: 32958142.

Major J, Crotta S, Llorian M, McCabe TM, Gad HH, Priestnall SL, Hartmann R, Wack A. Type I and III interferons disrupt lung epithelial repair during recovery from viral infection. Science. 2020 Aug 7;369(6504):712-717. doi: 10.1126/science.abc2061. Epub 2020 Jun 11. PMID: 32527928; PMCID: PMC7292500.

Arthurs C, Suarez-Bonnet A, Willis C, Xie B, Machulla N, Mair TS, Cao K, Millar M, Thrasivoulou C, Priestnall SL, Ahmed A. Equine penile squamous cell carcinoma: expression of biomarker proteins and EcPV2. Sci Rep. 2020 May 12;10(1):7863. doi: 10.1038/s41598-020-64014-3. PMID: 32398763; PMCID: PMC7217868.

Priestnall SL. Canine Respiratory Coronavirus: A Naturally Occurring Model of COVID-19? Vet Pathol. 2020 Jul;57(4):467-471. doi: 10.1177/0300985820926485. Epub 2020 May 5. PMID: 32369435.

Purzycka K, Peters LM, Elliott J, Lamb CR, Priestnall SL, Hardas A, Johnston CA, Rodriguez-Piza I. Histiocytic sarcoma in miniature schnauzers: 30 cases. J Small Anim Pract. 2020 Jun;61(6):338-345. doi: 10.1111/jsap.13139. Epub 2020 Apr 22. PMID: 32323304.

Wu Y, Chang YM, Polton G, Stell AJ, Szladovits B, Macfarlane M, Peters LM, Priestnall SL, Bacon NJ, Kow K, Stewart S, Sharma E, Goulart MR, Gribben J, Xia D, Garden OA. Gene Expression Profiling of B Cell Lymphoma in Dogs Reveals Dichotomous Metabolic Signatures Distinguished by Oxidative Phosphorylation. Front Oncol. 2020 Mar 6;10:307. doi: 10.3389/fonc.2020.00307. PMID: 32211332; PMCID: PMC7069556.

Moreira-Teixeira L, Tabone O, Graham CM, Singhania A, Stavropoulos E, Redford PS, Chakravarty P, Priestnall SL, Suarez-Bonnet A, Herbert E, Mayer- Barber KD, Sher A, Fonseca KL, Sousa J, Cá B, Verma R, Haldar P, Saraiva M, O'Garra A. Mouse transcriptome reveals potential signatures of protection and pathogenesis in human tuberculosis. Nat Immunol. 2020 Apr;21(4):464-476. doi: 10.1038/s41590-020-0610-z. Epub 2020 Mar 16. PMID: 32205882; PMCID: PMC7116040.

Jones AL, Suárez-Bonnet A, Mitchell JA, Ramirez GA, Stidworthy MF, Priestnall SL. Avian Papilloma and Squamous Cell Carcinoma: a Histopathological, Immunohistochemical and Virological study. J Comp Pathol. 2020 Feb;175:13-23. doi: 10.1016/j.jcpa.2019.11.007. Epub 2020 Jan 11. PMID: 32138838.

Wu Y, Chang YM, Stell AJ, Priestnall SL, Sharma E, Goulart MR, Gribben J, Xia D, Garden OA. Phenotypic characterisation of regulatory T cells in dogs reveals signature transcripts conserved in humans and mice. Sci Rep. 2019 Sep 17;9(1):13478. doi: 10.1038/s41598-019-50065-8. PMID: 31530890; PMCID: PMC6748983.

Wennogle SA, Priestnall SL, Suárez-Bonnet A, Webb CB. Comparison of clinical, clinicopathologic, and histologic variables in dogs with chronic inflammatory enteropathy and low or normal serum 25-hydroxycholecalciferol concentrations. J Vet Intern Med. 2019 Sep;33(5):1995-2004. doi: 10.1111/jvim.15614. Epub 2019 Sep 9. PMID: 31496004; PMCID: PMC6766529.

Miller AD, Koehler JW, Donovan TA, Stewart JE, Porter BF, Rissi DR, Priestnall SL, Schulman FY. Canine Ependymoma: Diagnostic Criteria and Common Pitfalls. Vet Pathol. 2019 Nov;56(6):860-867. doi: 10.1177/0300985819859872. Epub 2019 Jul 2. PMID: 31266414.

Singhania A, Graham CM, Gabryšová L, Moreira-Teixeira L, Stavropoulos E, Pitt JM, Chakravarty P, Warnatsch A, Branchett WJ, Conejero L, Lin JW, Davidson S, Wilson MS, Bancroft G, Langhorne J, Frickel E, Sesay AK, Priestnall SL, Herbert E, Ioannou M, Wang Q, Humphreys IR, Dodd J, Openshaw PJM, Mayer-Barber KD, Jankovic D, Sher A, Lloyd CM, Baldwin N, Chaussabel D, Papayannopoulos V, Wack A, Banchereau JF, Pascual VM, O'Garra A. Transcriptional profiling unveils type I and II interferon networks in blood and tissues across diseases. Nat Commun. 2019 Jun 28;10(1):2887. doi: 10.1038/s41467-019-10601-6. PMID: 31253760; PMCID: PMC6599044.

Pittaway R, Dobromylskyj MJ, Erles K, Pittaway CE, Suárez-Bonnet A, Chang YM, Priestnall SL. Nonocular Melanocytic Neoplasia in Cats: Characterization and Proposal of a Histologic Classification Scheme to More Accurately Predict Clinical Outcome. Vet Pathol. 2019 Nov;56(6):868-877. doi: 10.1177/0300985819854435. Epub 2019 Jun 20. PMID: 31221042.

Wennogle SA, Priestnall SL, Suárez-Bonnet A, Soontararak S, Webb CB. Lymphatic endothelial cell immunohistochemical markers for evaluation of the intestinal lymphatic vasculature in dogs with chronic inflammatory enteropathy. J Vet Intern Med. 2019 Jul;33(4):1669-1676. doi: 10.1111/jvim.15545. Epub 2019 Jun 6. PMID: 31169948; PMCID: PMC6639479.

Catalano S, Nadler SA, Fall CB, Marsh KJ, Léger E, Sène M, Priestnall SL, Wood CL, Diouf ND, Bâ K, Webster JP. Plagiorchis sp. in small mammals of Senegal and the potential emergence of a zoonotic trematodiasis. Int J Parasitol Parasites Wildl. 2019 Feb 14;8:164-170. doi: 10.1016/j.ijppaw.2019.02.003. PMID: 30834193; PMCID: PMC6384303.

Wennogle SA, Randall EK, Priestnall SL, Twedt DC, Simpson KW. Eubacterial fluorescence in situ hybridisation and histologic features in 25 dogs with gallbladder mucocele. J Small Anim Pract. 2019 May;60(5):291-297. doi: 10.1111/jsap.12982. Epub 2019 Feb 10. PMID: 30740720.

Allenspach KA, Mochel JP, Du Y, Priestnall SL, Moore F, Slayter M, Rodrigues A, Ackermann M, Krockenberger M, Mansell J; WSAVA GI Standardization Working Group, Luckschander N, Wang C, Suchodolski J, Berghoff N, Jergens AE. Correlating Gastrointestinal Histopathologic Changes to Clinical Disease Activity in Dogs With Idiopathic Inflammatory Bowel Disease. Vet Pathol. 2019 May;56(3):435-443. doi: 10.1177/0300985818813090. Epub 2018 Dec 18. PMID: 30563436.

Stoll AL, Suárez-Bonnet A, Summers BA, Priestnall SL. Malignant Cutaneous Peripheral Nerve Sheath Tumour with Rhabdomyosarcomatous Differentiation (Triton Tumour) in a Domestic Cat. J Comp Pathol. 2018 Nov;165:1-5. doi: 10.1016/j.jcpa.2018.09.003. Epub 2018 Oct 18. PMID: 30502790.

Suárez-Bonnet A, Willis C, Pittaway R, Smith K, Mair T, Priestnall SL. Molecular carcinogenesis in equine penile cancer: A potential animal model for human penile cancer. Urol Oncol. 2018 Dec;36(12):532.e9-532.e18. doi: 10.1016/j.urolonc.2018.09.004. Epub 2018 Sep 27. PMID: 30270026.

Caswell JL, Bassel LL, Rothenburger JL, Gröne A, Sargeant JM, Beck AP, Ekman S, Gibson-Corley KN, Kuiken T, LaDouceur EEB, Meyerholz DK, Origgi FC, Posthaus H, Priestnall SL, Ressel L, Sharkey L, Teixeira LBC, Uchida K, Ward JM, Webster JD, Yamate J. Observational Study Design in Veterinary Pathology, Part 2: Methodology. Vet Pathol. 2018 Nov;55(6):774-785. doi: 10.1177/0300985818798121. Epub 2018 Sep 18. PMID: 30227783.

Wong HE, Hedley J, Stapleton N, Murphy B, Priestnall SL. Odontoameloblastoma with extensive chondroid matrix deposition in a guinea pig. J Vet Diagn Invest. 2018 Sep;30(5):793-797. doi: 10.1177/1040638718794784. Epub 2018 Aug 22. PubMed PMID: 30132419.

Caswell JL, Bassel LL, Rothenburger JL, Gröne A, Sargeant JM, Beck AP, Ekman S, Gibson-Corley KN, Kuiken T, LaDouceur EEB, Meyerholz DK, Origgi FC, Posthaus H, Priestnall SL, Ressel L, Sharkey L, Teixeira LBC, Uchida K, Ward JM, Webster JD, Yamate J. Observational Study Design in Veterinary Pathology, Part 1: Study Design. Vet Pathol. 2018 Sep;55(5):607-621. doi: 10.1177/0300985818785705. Epub 2018 Aug 2. PubMed PMID: 30071806.

Beever L, Swinbourne F, Priestnall SL, Ter Haar G, Brockman DJ. Surgical management of chronic otitis secondary to craniomandibular osteopathy in three West Highland white terriers. J Small Anim Pract. 2018 Apr 16. doi: 10.1111/jsap.12839. [Epub ahead of print] PubMed PMID: 29659020.

Minor KM, Letko A, Becker D, Drögemüller M, Mandigers PJJ, Bellekom SR, Leegwater PAJ, Stassen QEM, Putschbach K, Fischer A, Flegel T, Matiasek K, Ekenstedt KJ, Furrow E, Patterson EE, Platt SR, Kelly PA, Cassidy JP, Shelton GD, Lucot K, Bannasch DL, Martineau H, Muir CF, Priestnall SL, Henke D, Oevermann A,  Jagannathan V, Mickelson JR, Drögemüller C. Canine NAPEPLD-associated models of human myelin disorders. Sci Rep. 2018 Apr 11;8(1):5818. doi: 10.1038/s41598-018-23938-7. PubMed PMID: 29643404; PubMed Central PMCID: PMC5895582.

Arsevska E, Priestnall SL, Singleton DA, Jones PH, Smyth S, Brant B, Dawson S, Sánchez-Vizcaíno F, Noble PJM, Radford AD. Small animal disease surveillance: respiratory disease 2017. Vet Rec. 2018 Mar 31;182(13):369-373. doi: 10.1136/vr.k1426. Epub 2018 Mar 29. PubMed PMID: 29599257.

Crossfield L, Fortuna L, Carling R, Scurrell E, Matas Riera M, Chang YM, Dawson C, Pittaway R, Yeung IY, Thaung C, Priestnall SL, Garden OA. Immunohistochemical characterization of feline lymphoplasmacytic anterior uveitis. Vet Ophthalmol. 2018 Mar 8. doi: 10.1111/vop.12569. [Epub ahead of print] PubMed PMID: 29517855.

Pittaway R, Wu Y, Szladovits B, Suárez-Bonnet A, Scurrell EJ, Garden OA,
Polton G, Priestnall SL. Diagnosis of anaplastic large-cell lymphoma in a dog
using CD30 immunohistochemistry. J Vet Diagn Invest. 2018 May;30(3):455-458. doi:
10.1177/1040638718760965. Epub 2018 Feb 19. PubMed PMID: 29455626.

Cook S, Civello A, Lam R, Fenn J, Neilson D, Priestnall S, Decker S. Rapid
postoperative recurrence of a cranial multilobular tumor of bone in a young dog. 
Clin Case Rep. 2017 Oct 30;5(12):1995-1999. doi: 10.1002/ccr3.1243. eCollection
2017 Dec. PubMed PMID: 29225843; PubMed Central PMCID: PMC5715593.

Sanchez RF, Everson R, Hedley J, Dawson C, Lam R, Priestnall SL, Garcia de
Carellan A, de Miguel C, Seymour C. Rabbits with naturally occurring cataracts
referred for phacoemulsification and intraocular lens implantation: a preliminary
study of 12 cases. Vet Ophthalmol. 2018 Jul;21(4):399-412. doi:
10.1111/vop.12525. Epub 2017 Dec 4. PubMed PMID: 29205744.

Paraschou G, Suárez-Bonnet A, Grove V, Priestnall SL. Endocardial Peripheral 
Nerve Sheath Tumour with Features of a Benign Schwannoma in a Donkey. J Comp
Pathol. 2017 Nov;157(4):280-283. doi: 10.1016/j.jcpa.2017.09.003. Epub 2017 Oct
21. PubMed PMID: 29169623.

Suárez-Bonnet A, Lara-García A, Stoll AL, Carvalho S, Priestnall SL. 14-3-3σ 
Protein Expression in Canine Renal Cell Carcinomas. Vet Pathol. 2018
Mar;55(2):233-240. doi: 10.1177/0300985817738097. Epub 2017 Nov 16. PubMed PMID: 

Suárez-Bonnet A, Grau-Bassas ER, Herráez P, Quesada-Canales O, Priestnall SL,
de Los Monteros AE. Benign Bilateral Adenomyoepithelioma of the Mammary Gland in 
a Ring-tailed Lemur (Lemur catta). J Comp Pathol. 2017 Aug - Oct;157(2-3):85-89. 
doi: 10.1016/j.jcpa.2017.06.009. Epub 2017 Jul 24. PubMed PMID: 28942309.

Heaps LA, Scudder CJ, Lipscomb VJ, Steinbach SM, Priestnall SL, Martineau H, 
Szladovits B, Fowkes RC, Garden OA. Serum anti-Müllerian hormone concentrations
before and after treatment of an ovarian granulosa cell tumour in a cat. JFMS
Open Rep. 2017 Aug 10;3(2):2055116917722701. doi: 10.1177/2055116917722701.
eCollection 2017 Jul-Dec. PubMed PMID: 28839946; PubMed Central PMCID:

Lee KCL, Baker L, Mallett S, Riddell A, Chowdary P, Alibhai H, Chang YM,
Priestnall S, Stanzani G, Davies N, Mookerjee R, Jalan R, Agarwal B.
Hypercoagulability progresses to hypocoagulability during evolution of
acetaminophen-induced acute liver injury in pigs. Sci Rep. 2017 Aug 24;7(1):9347.
doi: 10.1038/s41598-017-09508-3. PubMed PMID: 28839178; PubMed Central PMCID:

Muir CF, Priestnall SL, Hibbert A, Brown C, Garden OA, Scase T. Prevalence of
FoxP3(+) Cells Does Not Correlate With Ki67 Expression in Canine Diffuse Large
B-cell Lymphoma. J Comp Pathol. 2017 Jul;157(1):15-22. doi:
10.1016/j.jcpa.2017.03.010. Epub 2017 Jun 6. PubMed PMID: 28735665.

Terry RL, Lofts R, Summers BA, Priestnall SL. Pathology in Practice. J Am Vet
Med Assoc. 2017 Jun 15;250(12):1391-1393. doi: 10.2460/javma.250.12.1391. PubMed 
PMID: 28569633.

Wennogle SA, Priestnall SL, Webb CB. Histopathologic Characteristics of
Intestinal Biopsy Samples from Dogs With Chronic Inflammatory Enteropathy With
and Without Hypoalbuminemia. J Vet Intern Med. 2017 Mar;31(2):371-376. doi:
10.1111/jvim.14669. Epub 2017 Mar 3. PubMed PMID: 28256026; PubMed Central PMCID:

Lazzerini K, Gutierrez-Quintana R, José-López R, McConnell F, Gonçalves R,
McMurrough J, De Decker S, Muir C, Priestnall SL, Mari L, Stabile F, De Risio L, 
Loeffler C, Tauro A, Rusbridge C, Rodenas S, Añor S, de la Fuente C, Fischer A,
Bruehschwein A, Penderis J, Guevar J. Clinical Features, Imaging Characteristics,
and Long-term Outcome of Dogs with Cranial Meningocele or Meningoencephalocele. J
Vet Intern Med. 2017 Mar;31(2):505-512. doi: 10.1111/jvim.14638. Epub 2017 Feb
28. PubMed PMID: 28247440; PubMed Central PMCID: PMC5354015.

Yap FW, Rasotto R, Priestnall SL, Parsons KJ, Stewart J. Intra- and
inter-observer agreement in histological assessment of canine soft tissue
sarcoma. Vet Comp Oncol. 2017 Dec;15(4):1553-1557. doi: 10.1111/vco.12300. Epub
2017 Jan 30. PubMed PMID: 28133880.

Nov;57(6):582-586. doi: 10.1111/vru.12380. Epub 2016 Jun 2. PubMed PMID:

Carvalho S, Stoll AL, Priestnall SL, Suarez-Bonnet A, Rassnick K, Lynch S,
Schoepper I, Romanelli G, Buracco P, Atherton M, de Merlo EM, Lara-Garcia A.
Retrospective evaluation of COX-2 expression, histological and clinical factors
as prognostic indicators in dogs with renal cell carcinomas undergoing
nephrectomy. Vet Comp Oncol. 2017 Dec;15(4):1280-1294. doi: 10.1111/vco.12264.
Epub 2016 Aug 31. PubMed PMID: 27578604.

Fenn J, Boursnell M, Hitti RJ, Jenkins CA, Terry RL, Priestnall SL, Kenny PJ,
Mellersh CS, Forman OP. Genome sequencing reveals a splice donor site mutation in
the SNX14 gene associated with a novel cerebellar cortical degeneration in the
Hungarian Vizsla dog breed. BMC Genet. 2016 Aug 26;17(1):123. doi:
10.1186/s12863-016-0433-y. PubMed PMID: 27566131; PubMed Central PMCID:

Giuliano A, Swift R, Arthurs C, Marote G, Abramo F, McKay J, Thomson C,
Beltran M, Millar M, Priestnall S, Dobson J, Costantino-Casas F, Petrou T,
McGonnell IM, Davies AJ, Weetman M, Garden OA, Masters JR, Thrasivoulou C, Ahmed 
A. Quantitative Expression and Co-Localization of Wnt Signalling Related Proteins
in Feline Squamous Cell Carcinoma. PLoS One. 2016 Aug 25;11(8):e0161103. doi:
10.1371/journal.pone.0161103. eCollection 2016. Erratum in: PLoS One.
2016;11(9):e0163838. PubMed PMID: 27559731; PubMed Central PMCID: PMC4999089.

TERRIER. Vet Radiol Ultrasound. 2017 Jul;58(4):E42-E44. doi: 10.1111/vru.12403.
Epub 2016 Aug 4. PubMed PMID: 27490688.

Hampel R, Taylor-Brown F, Priestnall SL. Cervical Vertebral Body Chordoma in 
a Cat. J Comp Pathol. 2016 May;154(4):319-22. doi: 10.1016/j.jcpa.2016.03.006.
Epub 2016 May 4. PubMed PMID: 27156013.

Williams K, Andrie K, Cartoceti A, French S, Goldsmith D, Jennings S,
Priestnall SL, Wilson D, Jutkowitz A. Pulmonary Veno-Occlusive Disease: A Newly
Recognized Cause of Severe Pulmonary Hypertension in Dogs. Vet Pathol. 2016
Jul;53(4):813-22. doi: 10.1177/0300985815626572. Epub 2016 Feb 29. PubMed PMID:

Jones ID, Lamb CR, Drees R, Priestnall SL, Mantis P. ASSOCIATIONS BETWEEN
WITH HEPATIC OR SPLENIC MASSES. Vet Radiol Ultrasound. 2016 Mar-Apr;57(2):144-53.
doi: 10.1111/vru.12336. Epub 2016 Jan 13. PubMed PMID: 26763951.

Radiol Ultrasound. 2016 Mar-Apr;57(2):130-6. doi: 10.1111/vru.12335. Epub 2016
Jan 13. PubMed PMID: 26763944.

Cook S, Priestnall SL, Blake D, Meeson RL. Angiostrongylus vasorum Causing
Severe Granulomatous Hepatitis with Concurrent Multiple Acquired PSS. J Am Anim
Hosp Assoc. 2015 Sep-Oct;51(5):320-4. doi: 10.5326/JAAHA-MS-6210. PubMed PMID:

Dawson C, Dixon J, Lam R, Priestnall SL, Escanilla N. Differential diagnoses,
investigation, and management of a periocular swelling close to the nasolacrimal 
duct in a horse - A case report of Dacryops. Vet Ophthalmol. 2016
Sep;19(5):427-31. doi: 10.1111/vop.12309. Epub 2015 Sep 4. PubMed PMID: 26338310.

El-Attar LM, Mitchell JA, Brooks Brownlie H, Priestnall SL, Brownlie J.
Detection of non-primate hepaciviruses in UK dogs. Virology. 2015 Oct;484:93-102.
doi: 10.1016/j.virol.2015.05.005. Epub 2015 Jun 15. PubMed PMID: 26086431.

Swann JW, Priestnall SL, Dawson C, Chang YM, Garden OA. Histologic and
clinical features of primary and secondary vasculitis: a retrospective study of
42 dogs (2004-2011). J Vet Diagn Invest. 2015 Jul;27(4):489-96. doi:
10.1177/1040638715587934. Epub 2015 Jun 15. PubMed PMID: 26077546.

Janovec J, Brockman DJ, Priestnall SL, Kulendra NJ. Successful treatment of
intra-abdominal eumycotic mycetoma caused by Penicillium duponti in a dog. J
Small Anim Pract. 2016 Mar;57(3):159-62. doi: 10.1111/jsap.12375. Epub 2015 May
27. PubMed PMID: 26017318.

Lee KC, Baker LA, Stanzani G, Alibhai H, Chang YM, Jimenez Palacios C, Leckie
PJ, Giordano P, Priestnall SL, Antoine DJ, Jenkins RE, Goldring CE, Park BK,
Andreola F, Agarwal B, Mookerjee RP, Davies NA, Jalan R. Extracorporeal liver
assist device to exchange albumin and remove endotoxin in acute liver failure:
Results of a pivotal pre-clinical study. J Hepatol. 2015 Sep;63(3):634-42. doi:
10.1016/j.jhep.2015.04.020. Epub 2015 May 1. PubMed PMID: 25937432; PubMed
Central PMCID: PMC4541472.

Lee A, Kathrani A, Priestnall SL, Smith K, Werling D, Allenspach K. Lack of
correlation between mucosal immunoglobulin A-positive plasma cell numbers and
TLR5 genotypes in German shepherd dogs with idiopathic chronic enteropathy. J
Comp Pathol. 2015 Feb-Apr;152(2-3):201-5. doi: 10.1016/j.jcpa.2015.01.002. Epub
2015 Feb 27. PubMed PMID: 25728812.

Anfinsen KP, Berghoff N, Priestnall SL, Suchodolski JS, Steiner JM,
Allenspach K. Urinary and faecal N-methylhistamine concentrations do not serve as
markers for mast cell activation or clinical disease activity in dogs with
chronic enteropathies. Acta Vet Scand. 2014 Dec 21;56:90. doi:
10.1186/s13028-014-0090-y. PubMed PMID: 25528646; PubMed Central PMCID:

Matas Riera M, Donaldson D, Priestnall SL. Descemet's membrane detachment in 
horses; case series and literature review. Vet Ophthalmol. 2015 Sep;18(5):357-63.
doi: 10.1111/vop.12199. Epub 2014 Sep 2. Review. PubMed PMID: 25180582.

Gregori T, Mantis P, Benigni L, Priestnall SL, Lamb CR. Comparison of
computed tomographic and pathologic findings in 17 dogs with primary adrenal
neoplasia. Vet Radiol Ultrasound. 2015 Mar-Apr;56(2):153-9. doi:
10.1111/vru.12209. Epub 2014 Aug 19. PubMed PMID: 25139015.

Heilmann RM, Grellet A, Allenspach K, Lecoindre P, Day MJ, Priestnall SL,
Toresson L, Procoli F, Grützner N, Suchodolski JS, Steiner JM. Association
between fecal S100A12 concentration and histologic, endoscopic, and clinical
disease severity in dogs with idiopathic inflammatory bowel disease. Vet Immunol 
Immunopathol. 2014 Apr 15;158(3-4):156-66. doi: 10.1016/j.vetimm.2014.01.006.
Epub 2014 Jan 25. PubMed PMID: 24518653.

Priestnall SL, Mitchell JA, Walker CA, Erles K, Brownlie J. New and emerging 
pathogens in canine infectious respiratory disease. Vet Pathol. 2014
Mar;51(2):492-504. doi: 10.1177/0300985813511130. Epub 2013 Nov 14. Review.
PubMed PMID: 24232191.

Keenihan EK, Lynch S, Priestnall SL, Harrington NT, Benigni L, Lamb CR.
Unusual rib metastasis in two cats with pulmonary carcinoma. J Feline Med Surg.
2013 Dec;15(12):1145-8. doi: 10.1177/1098612X13489675. Epub 2013 May 15. PubMed
PMID: 23677935.

Procoli F, Mõtsküla PF, Keyte SV, Priestnall S, Allenspach K. Comparison of
histopathologic findings in duodenal and ileal endoscopic biopsies in dogs with
chronic small intestinal enteropathies. J Vet Intern Med. 2013
Mar-Apr;27(2):268-74. doi: 10.1111/jvim.12041. Epub 2013 Feb 9. PubMed PMID:

Terzo E, McConnell JF, Shiel RE, McAllister H, Behr S, Priestnall SL, Smith
KC, Nolan CM, Callanan JJ. Unique topographic distribution of greyhound
nonsuppurative meningoencephalitis. Vet Radiol Ultrasound. 2012
Nov-Dec;53(6):636-42. doi: 10.1111/j.1740-8261.2012.01963.x. Epub 2012 Jun 29.
PubMed PMID: 22742427.

Priestnall SL, Smith KC. Canine infectious respiratory disease: tackling the 
unknown unknowns. Vet J. 2012 Mar;191(3):271-2. doi: 10.1016/j.tvjl.2011.12.013. 
Epub 2012 Jan 20. PubMed PMID: 22264644.

Tivers MS, Lipscomb VJ, Scase TJ, Priestnall SL, House AK, Gates H,
Wheeler-Jones CP, Smith KC. Vascular endothelial growth factor (VEGF) and VEGF
receptor expression in biopsy samples of liver from dogs with congenital
portosystemic shunts. J Comp Pathol. 2012 Jul;147(1):55-61. doi:
10.1016/j.jcpa.2011.09.001. Epub 2011 Oct 11. PubMed PMID: 21996035.

Hall JL, Lee KC, Priestnall S, Lamb CR. Radial artery pseudoaneurysm in a
Maine Coon cat. Vet Surg. 2011 Oct;40(7):861-4. doi:
10.1111/j.1532-950X.2011.00868.x. Epub 2011 Sep 7. PubMed PMID: 21899575.

Kathrani A, Schmitz S, Priestnall SL, Smith KC, Werling D, Garden OA,
Allenspach K. CD11c+ cells are significantly decreased in the duodenum, ileum and
colon of dogs with inflammatory bowel disease. J Comp Pathol. 2011
Nov;145(4):359-66. doi: 10.1016/j.jcpa.2011.03.010. Epub 2011 May 17. PubMed
PMID: 21592490.

Priestnall SL, Schöniger S, Ivens PA, Eickmann M, Brachthäuser L, Kehr K,
Tupper C, Piercy RJ, Menzies-Gow NJ, Herden C. Borna disease virus infection of a
horse in Great Britain. Vet Rec. 2011 Apr 9;168(14):380b. doi: 10.1136/vr.c6405. 
Epub 2011 Mar 2. PubMed PMID: 21498268.

Bound NJ, Priestnall SL, Cariou MP. Lingual and renal lymphoma in a cat. J
Feline Med Surg. 2011 Apr;13(4):272-5. doi: 10.1016/j.jfms.2010.11.011. Epub 2011
Jan 3. PubMed PMID: 21208818.

Priestnall SL, Erles K, Brooks HW, Cardwell JM, Waller AS, Paillot R,
Robinson C, Darby AC, Holden MT, Schöniger S. Characterization of pneumonia due
to Streptococcus equi subsp. zooepidemicus in dogs. Clin Vaccine Immunol. 2010
Nov;17(11):1790-6. doi: 10.1128/CVI.00188-10. Epub 2010 Sep 22. PubMed PMID:
20861329; PubMed Central PMCID: PMC2976090.

Naylor RJ, Priestnall SL, Turk AC, Summers BA, Schöniger S, Piercy RJ. Equine
degenerative myeloencephalopathy in a horse in the UK. Vet Rec. 2010 Sep
4;167(10):380-1. doi: 10.1136/vr.c3818. PubMed PMID: 20817901.

Gajanayake I, Priestnall SL, Benigni L, English K, Summers BA, Garden OA.
Paraneoplastic hypercalcemia in a dog with benign renal angiomyxoma. J Vet Diagn 
Invest. 2010 Sep;22(5):775-80. PubMed PMID: 20807942.

Paillot R, Darby AC, Robinson C, Wright NL, Steward KF, Anderson E, Webb K,
Holden MT, Efstratiou A, Broughton K, Jolley KA, Priestnall SL, Marotti Campi MC,
Hughes MA, Radford A, Erles K, Waller AS. Identification of three novel
superantigen-encoding genes in Streptococcus equi subsp. zooepidemicus, szeF,
szeN, and szeP. Infect Immun. 2010 Nov;78(11):4817-27. doi: 10.1128/IAI.00751-10.
Epub 2010 Aug 16. PubMed PMID: 20713629; PubMed Central PMCID: PMC2976332.

Priestnall S, Erles K. Streptococcus zooepidemicus: an emerging canine
pathogen. Vet J. 2011 May;188(2):142-8. doi: 10.1016/j.tvjl.2010.04.028. Epub
2010 May 31. Review. PubMed PMID: 20570190.

Priestnall SL, De Bellis F, Bond R, Alony-Gilboa Y, Summers BA. Spontaneous
regression of congenital cutaneous hemangiomas in a calf. Vet Pathol. 2010
Mar;47(2):343-5. doi: 10.1177/0300985809358429. Epub 2009 Dec 31. PubMed PMID:

Priestnall SL, Mitchell JA, Brooks HW, Brownlie J, Erles K. Quantification of
mRNA encoding cytokines and chemokines and assessment of ciliary function in
canine tracheal epithelium during infection with canine respiratory coronavirus
(CRCoV). Vet Immunol Immunopathol. 2009 Jan 15;127(1-2):38-46. doi:
10.1016/j.vetimm.2008.09.017. Epub 2008 Sep 27. PubMed PMID: 18977539.

Priestnall SL, Pratelli A, Brownlie J, Erles K. Serological prevalence of
canine respiratory coronavirus in southern Italy and epidemiological relationship
with canine enteric coronavirus. J Vet Diagn Invest. 2007 Mar;19(2):176-80.
PubMed PMID: 17402612.

Priestnall SL, Brownlie J, Dubovi EJ, Erles K. Serological prevalence of
canine respiratory coronavirus. Vet Microbiol. 2006 Jun 15;115(1-3):43-53. Epub
2006 Mar 23. PubMed PMID: 16551493.

Wiinberg B, Spohr A, Dietz HH, Egelund T, Greiter-Wilke A, McDonough SP,
Olsen J, Priestnall S, Chang YF, Simpson KW. Quantitative analysis of
inflammatory and immune responses in dogs with gastritis and their relationship
to Helicobacter spp. infection. J Vet Intern Med. 2005 Jan-Feb;19(1):4-14. PubMed
PMID: 15715041.

Priestnall SL, Wiinberg B, Spohr A, Neuhaus B, Kuffer M, Wiedmann M, Simpson 
KW. Evaluation of "Helicobacter heilmannii" subtypes in the gastric mucosas of
cats and dogs. J Clin Microbiol. 2004 May;42(5):2144-51. PubMed PMID: 15131182;
PubMed Central PMCID: PMC404595.


Simon teaches general and systems-based pathology across a range of undergraduate and postgraduate courses, incluign the BVetMed course and he particularly enjoys training anatomic pathology residents and preparing them for board examinations in pathology. Simon has previously served as Anatomic Pathology Residency Director, BSc Comparative Pathology Course Director and Intramural Rotation Director for Pathology. In 2020 Simon was awarded an Achievent Award by the Royal College of Pathologists for Contribuition to Education.

Invited speaker on respiratory disease and gastrointestinal pathology at a number of national and international meetings in Dublin (BSVP), Maastricht (ECVIM-CA), Leon (CL Davis Foundation), Oslo (MSD Animal Health), Helsingor and Reykjavik (Havemeyer Foundation), Rotterdam (ECVIM-CA), Lerida (Davis-Thompson Foundation), Guangzhou (SCAU), Pheonix (ACVIM), Edinburgh (BSVP) and Paris (SFAPV).

Senior Examiner for the Royal College of Pathologists (Veterinary Pathology)

Davis-Thompson DVM Foundation European Division Treasurer and Board Member

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