Interesting & classic cases from the archives of: American Veterinary

Pathology Associates PLLC Thanks to all of our clients for the interesting & classic cases,

The entire AVPA Team: Ronald D. Tyler Jr., DVM, MS

Scott Trasti, DVM Ronald D. Tyler Sr., DVM, PhD Carla A. Gutierrez, MS, MPH

Feline ulcerative granulomatous dermatitis due to an

acid fast bacteria infection (Dr. Patterson)

American Veterinary Pathology Associates PLLC Case#: 14-051

Feline ulcerative granulomatous dermatitis due to an acid fast bacteria infection – Gross Lesions

Feline ulcerative granulomatous dermatitis due to an acid fast bacteria infection

H&E 2x H&E 10x

Fites 100x

Feline dermatophytosis due to Microsporum canis infection

(Dr. Goodnow) American Veterinary Pathology Associates PLLC

Case#: 14-098

Feline dermatophytosis due to Microsporum canis infection

H&E 4x

H&E 40x

Cat: Disseminated histoplasmosis (Dr. Wilson)

American Veterinary Pathology Associates PLLC Case#: 14-051

Lymph Node Cytology: Diff-Quick® stain 100x = Intra-histiocytic yeast

Brain: Multifocal granulomatous encephalitis with intra-histiocytic yeast

H&E 20x

GMS 40x LFB-PAS 40x

Dog – Extra-skeletal osteosarcoma (Dr. Walsh)

American Veterinary Pathology Associates PLLC Case#: 13-184

Dog – Extra-skeletal osteosarcoma H&E 4x

H&E 40x

Dog – Duodenal T-cell Lymphoma (Dr. Wilson)

American Veterinary Pathology Associates PLLC Case#: 14-004

Dog – Duodenal T-cell Lymphoma

H&E 2x

H&E 40x

CD-3 Immunohistochemistry

10x

Dog – Duodenal adenocarcinoma (Dr. Lucas)

American Veterinary Pathology Associates PLLC Case#: 14-120

Dog – Duodenal adenocarcinoma

H&E 2x

H&E 4x

H&E 10x

H&E 40x

Dog – Metastatic intestinal adenocarcinoma

Liver 40x

Mediastinal lymph node 40x Spleen 40x

Dog – Ocular melanosarcoma (Dr. Shenk)

American Veterinary Pathology Associates PLLC Case#: 13-102

Canine ocular malignant melanoma

H&E 4x

H&E 10x

H&E 40x

Cat – Pyogranulomatous stomatitis & vasculitis due to mutated

Feline coronavirus (FIP) (Dr. Tomlinson)

American Veterinary Pathology Associates PLLC Case#: 13-123

Cat – Pyogranulomatous stomatitis & vasculitis due to mutated Feline

corona virus (FIP)

H&E 4x

H&E 10x

H&E 40x

Dog – Testicular seminoma (Dr. Thomason)

American Veterinary Pathology Associates PLLC Case#: 14-041

Dog – Testicular seminoma H&E 2x

H&E 4x

H&E 10x

H&E 40x

Interesting & classic cases from AVPA’S 1ST year in business.

A. Cat: Granulomatous dermatitis due to acid fast bacteria (Dr. Patterson – Sheep Meadow Animal Hospital, Ghent, NY)

B. Cat: Dermatophytosis (Dr. Goodnow – Gardiner Animal Hospital, Gardiner, NY)

C. Cat: Disseminated histoplasmosis (Dr. Wilson – Carter County Animal Hospital, Ardmore, OK)

D. Dog: Extra-skeletal osteosarcoma (Dr. Walsh – Village Vet Animal Clinic, Broken Arrow, OK)

E. Dog: Duodenal T-cell lymphoma (Dr. Wilson – Carter County Animal Hospital, Ardmore, OK)

F. Dog: Duodenal adenocarcinoma with metastasis to liver, spleen & lymph node (Dr. Lucas – LuRay Clinic of Veterinary Medicine, Luray, VA )

G. Dog: Ocular melanosarcoma (Dr. Shenk – Derry Animal Hospital, Harrisburg, PA)

H. Cat : Pyogranulomatous stomatitis & vasculitis 2° mutated feline coronavirus (FIP) (Dr. Tomlinson – Fairlea Animal Hospital, Lewisburg, VA)

I. Dog: Testicular seminoma (Dr. Thomason – Blue Ridge Veterinary Hospital, Floyd, VA)