Hypertrophic cardiomyopathy in owl monkeys (Aotus spp.).

Cardiac hypertrophy is a common postmortem finding in owl monkeys. In most cases the animals do not exhibit clinical signs until the disease is advanced, making antemortem diagnosis of subclinical disease difficult and treatment unrewarding. We obtained echocardiograms, electrocardiograms, and thoracic radiographs from members of a colony of owl monkeys that previously was identified as showing a 40% incidence of gross myocardial hypertrophy at necropsy, to assess the usefulness of these modalities for antemortem diagnosis.

Malignant peripheral nerve sheath tumor of the diaphragm in a dog.

An 11-year-old, castrated male greyhound was referred to the Michigan State University Veterinary Teaching Hospital for surgical removal of a thoracic mass. Thoracic radiographs revealed a smoothly marginated mass obscuring the diaphragm in the left caudal thorax. Ultrasonographic and computed tomographic imaging modalities demonstrated a mass originating from the left hemidiaphragm.

Tibial plateau symmetry and the effect of osteophytosis on tibial plateau angle measurements.

A novel technique was developed to estimate the caudal medial tibial plateau landmark in the face of osteophytosis to improve accuracy in tibial plateau angle measurements. Using this technique, tibial plateau angles were evaluated in 31 normal dogs before and 8 months after right cranial cruciate ligament transection. There was no significant difference in mean tibial plateau angle before or after induction of osteophytosis.

Randomized controlled trial of the efficacy of short-term amitriptyline administration for treatment of acute, nonobstructive, idiopathic lower urinary tract disease in cats.

Objective: To determine whether short-term amitriptyline administration would be efficacious in the treatment of acute, nonobstructive, idiopathic lower urinary tract disease in cats.

Design: Randomized controlled trial.

Animals: 31 untreated male and female cats with acute, nonobstructive, idiopathic lower urinary tract disease.