auburn rounds Flashcards
1
Q
- The carcass of a 23-year-old intact-female, chestnut, Appaloosa, equine with a history of colic was presented for postmortem examination. This mare was in fair nutritional condition with minimal depletion of subcutaneous and visceral adipose tissue. Postmortem degeneration was minimal. Several petechiae and locally extensive, irregular hemorrhagic areas were scattered throughout the dorsal portions of the lung lobes. Multiple petechiae and ecchymoses were scattered throughout the subepicardial and subendocardial surfaces of the cardiac ventricles. The gastrointestinal tract was moderately distended with gas and multifocally extensive areas of mild to moderate hyperemia were scattered over the serosal surfaces. The large intestinal and cecal mucosal surfaces were diffusely hyperemic to hemorrhagic with multiple petechiae, ecchymoses and locally extensive hemorrhages. Numerous 0.5 cm diameter up to 4.0 cm x 10.0 cm x 2.0 cm mucosal excavations/ulcerations were scattered throughout the colonic and cecal mucosa. No other pathological abnormalities were observed. The final histopathologic diagnosis in this case was fibrinonecrotizing and ulcerative colitis and typhlitis. These lesions are MOST consistent with:
A. cecal torsion B. fecaliths C. salmonellosis D. pythiosis E. laminitis
A
C
2
Q
- The carcass of a 3-year-old, male, intact llama was presented for necropsy. The body condition was good. The carcass was moderately dehydrated and mildly autolyzed. The stomach and small intestine were moderately distended with fluid and gas. The third compartment of the stomach (C3) had a focally extensive, 1 cm x 3 cm ulcer with slightly indurated margins and scattered petechiae. The mucosa of the small intestine was diffusely red and congested and also contained bloody fluid. The cecum and colon had multifocal variably-sized, dark brown to green black areas of mucosal necrosis. There was excessive white froth in the trachea and bronchi. The lungs were severely wet, moist and heavy, diffusely congested, mottled dark red, pink and tan, and had randomly scattered ecchymoses. A 0.5 cm diameter, friable, white and red, vegetation was on the valve leaflet of the mitral valve. The MOST appropriate morphologic diagnosis of the cardiac lesion in this case would be:
A. serous cyst B. valvular fibrosis C. valvular hematoma D. valvular endocardiosis E. vegetative endocarditis
A
E
3
Q
- A 9-year-old intact male canine mixed breed was submitted dead for necropsy. The dog was in good physical condition. The pulmonary parenchyma was diffusely dark red. The prostate was approximately three times normal size. The cut surface of this parenchyma revealed multiple variably-sized (from 2 to 3 mm to 1 cm in diameter) cysts. These cysts contain translucent yellow brown fluid. The wall of the urinary bladder was dark red. Histologically, the prostate contains abundant well differentiated hypertrophic and hyperplastic prostatic alveoli lined by well differentiated epithelial cells. You diagnose these lesions to be:
A. prostatic cyst B. prostatic hyperplasia C. squamous metaplasia D. suppurative prostatitis E. prostatic adenocarcinoma
A
B
4
Q
- An 11-year-old mare presented with stallion like behavior and on rectal examination a right ovarian mass was palpated. Subsequently, this grapefruit-sized 1(2 cm diameter) round, tan, mass was presented for biopsy examination. The outer surface of the mass was smooth. The cut surface contained multiple blood-filled cavities with a tan/brown interlacing stroma. Histologically, the tissue consists of islands and nests of columnar cells forming glandular structures. Interlacing between the glandular structures are spindle shaped cells. Some of the cysts contain “Call Exner” bodies. What is the MOST probable diagnosis for this ovarian mass?
A. teratoma B. dysgerminoma C. lymphosarcoma D. cystadenocarcinoma E. granulosa cell tumor
A
E
