Poorly differentiated @entity1822 of the urogenital tract in a XXXX .

@entity632 @entity1641 @entity548 @entity5 @entity1003 @entity1822 @entity811 @entity11674 @entity2335
CASE DESCRIPTION: A 2-year-old Thoroughbred filly was evaluated because of @entity548 from the vulva and suspected @entity811 of 5 days' duration. CLINICAL FINDINGS: A primary @entity1003 was ruled out on the basis of results of hematologic testing. Vaginoscopy and cystoscopy revealed a large bleeding mass in the bladder that extended into the vagina, causing marked obliteration of normal urogenital structures and difficulty in urination. Histologic examination of endoscopic and surgical biopsy specimens revealed a poorly differentiated @entity5 likely of mesenchymal origin. Chronic @entity2335 caused by @entity11674 was also diagnosed. TREATMENT AND OUTCOME: The @entity5 continued to grow despite treatment with @entity632 and, within 45 days, was causing substantial discomfort and stranguria. Given the grave prognosis, the @entity1641 was euthanized. At necropsy, the @entity5 was found to have caused widespread destruction of the urinary bladder and to have invaded the broad ligament of the uterus. The mass was identified as a poorly differentiated @entity1822 on the basis of results of histologic examination and immunohistochemical staining for alpha-actin. CLINICAL RELEVANCE: Findings suggested that @entity1822 should be considered in the differential diagnosis when examining @entity1641 with @entity548 .
