Fatal pyogranulomatous myocarditis in 10 Boxer puppies.

Over a period of 5 years, 10 pure-bred Boxer puppies, 9-16 weeks old, were presented with a history of sudden death and were diagnosed with pyogranulomatous myocarditis. The myocarditis was characterized by a mixed infiltrate composed predominantly of neutrophils and macrophages. In our retrospective study, original case records and archived materials were examined.

Pulmonary trematodosis (Pharyngostomoides sp.) in a juvenile raccoon (Procyon lotor).

A lethargic, wild, juvenile raccoon died and was subsequently presented for necropsy. The lungs had widely disseminated, finely granular, yellow-tan foci with moderate pulmonary, as well as, thoracic lymphadenopathy. Histopathology revealed numerous cross-sections of larval trematodes morphologically consistent with diplostomid mesocercariae and metacercariae as well as moderate alveolointerstitial pneumonia with a mixed population of eosinophils, macrophages, lymphocytes, and plasma cells.

Systemic blastomycosis in a horse.

Progressive multisystemic disease caused by Blastomyces dermatitidis was diagnosed in a 17-year-old Quarter horse broodmare. The mare had been treated unsuccessfully with antibiotics for mastitis 3 months postpartum. The disease progressed to exudative cutaneous lesions affecting the ventrum, pectoral region, and limbs accompanied by weight loss across several months.

Infarctive purpura hemorrhagica in five horses.

Five horses were examined because of signs of muscle stiffness, colic, or both. All 5 had been exposed to Streptococcus equi within 3 weeks prior to examination or had high serum titers of antibodies against the M protein of S equi. Horses had signs of unrelenting colic-like pain and focal areas of muscle swelling.

Absolute and relative cell counts for synovial fluid from clinically normal shoulder and stifle joints in cats.

Objective: To determine absolute and relative cell counts for synovial fluid from grossly, radiographically, and histologically normal shoulder and stifle joints in healthy cats.

Design: Clinical study.

Animals: 52 cats scheduled to be euthanatized for unrelated reasons.

Comparison of colloid, thyroid follicular epithelium, and thyroid hormone concentrations in healthy and severely sick dogs.

Objectives: To compare serum concentrations of total thyroxine (TT4), free thyroxine (fT4), and thyroid-stimulating hormone (TSH), as well as measures of thyroid follicular colloid and epithelium, between groups of healthy dogs and severely sick dogs.

Design: Cross-sectional study.

Animals: 61 healthy dogs and 66 severely sick dogs.

Pyogranulomatous meningoencephalitis associated with dematiaceous fungal (Cladophialophora bantiana) infection in a domestic cat.

A 6-month-old, castrated male domestic cat with progressive neurological signs of 2-3 weeks duration was necropsied. Macroscopic findings were restricted to the brain and included irregularly shaped, well-delineated but unencapsulated areas of intense black pigmentation involving the rostral portion of both cerebral hemispheres. Microscopically, numerous brown, oblong, segmented branching hyphae and conidial-like structures and extensive pyogranulomatous inflammation were identified throughout the cerebral lesion and in adjacent blood vessels.

Clinical and pathologic analyses of bicipital tenosynovitis in dogs.

Objective: To determine the clinical and pathologic findings in dogs with primary bicipital tenosynovitis.

Animals: 19 dogs with 20 shoulder joints treated surgically for bicipital tenosynovitis and 8 shoulder joints from 4 clinically normal dogs.

Procedure: Histologic abnormalities of tendon sheaths of the biceps brachii in affected dogs were determined by use of comparison with findings in clinically normal dogs.