2019 journal article
Cardiac Leiomyosarcoma in a Cat Presenting for Bilateral Renal Neoplasia
JOURNAL OF COMPARATIVE PATHOLOGY, 168, 19–24.
author keywords: cardiac neoplasia; cat; immunohistochemistry; leiomyosarcoma
MeSH headings : Animals; Cat Diseases / pathology; Cats; Female; Heart Neoplasms / veterinary; Kidney Neoplasms / veterinary; Leiomyosarcoma / veterinary
TL;DR:
A 10-year-old neutered female domestic longhair cat was presented to a tertiary care veterinary hospital for evaluation of a right renal mass that was identified incidentally on abdominal radiographs as a sarcoma based on fine needle aspiration cytology, and diagnosed with cardiac leiomyosarcoma with pulmonary and bilateral renal metastasis.
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(Web of Science; OpenAlex)
Source: Web Of Science
Added: June 4, 2019
A 10-year-old neutered female domestic longhair cat was presented to a tertiary care veterinary hospital for evaluation of a right renal mass that was identified incidentally on abdominal radiographs and classified further as a sarcoma based on fine needle aspiration cytology. Further diagnostic workup, including ultrasound and cytology, identified a sarcoma in the left kidney. After approximately 1 month of conservative medical management, the clinical condition deteriorated and the cat was humanely destroyed. Post-mortem examination confirmed bilateral renal masses with multifocal infarction and extensive necrosis, and further identified a large mass at the apex of the heart as well as multiple pulmonary nodules. Microscopical examination of the masses identified a population of poorly-differentiated neoplastic spindle cells, consistent with sarcoma. Immunohistochemically, the neoplastic cells expressed smooth muscle actin and muscle-specific actin, but were negative for myoglobin and factor VIII. Phosphotungstic acid–haematoxylin staining was unable to identify cross-striations in the neoplastic cells. Based on these results and the pattern of lesion distribution, the cat was diagnosed with cardiac leiomyosarcoma with pulmonary and bilateral renal metastasis.