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  • Author or Editor: Bérénice Conversy x
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CASE DESCRIPTION A 14-year-old ovariectomized domestic shorthair cat was evaluated because of periuria and perineal licking of 3 days' duration.

CLINICAL FINDINGS On initial examination, an abdominal mass was palpable cranial to the urinary bladder. The perineal area was soiled with a blood-tinged mucous fluid. Abdominal ultrasonography revealed a vascularized, focal, and circumferential thickening of the right uterine horn, involving particularly the muscular layer. No evidence of dissemination was noted.

TREATMENT AND OUTCOME Hysterectomy was performed, revealing a localized, 2.5 × 4-cm firm mass with a smooth surface within the right uterine horn. Results of histologic examination and immunohistochemical analysis of tissue samples from the mass suggested high-grade T-cell uterine lymphoma. Owners declined medical and chemotherapeutic treatments. One year later, the cat developed diabetes mellitus, which was medically treated. Nineteen months following the uterine lymphoma diagnosis, a central corneal ulcer associated with a right retrobulbar mass was diagnosed. The cat was euthanized, and the retrobulbar mass was removed. Immunohistochemical staining revealed evidence of high-grade B-cell retrobulbar lymphoma.

CLINICAL RELEVANCE The clinical outcome of this cat with uterine lymphoma was favorable for 19 months after diagnosis, with no treatment other than hysterectomy. Whether the same outcome could be expected for other cats with this rarely reported neoplasm remains to be determined. Uterine lymphoma should be considered as a possible cause of dysuria in an ovariectomized cat.

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in Journal of the American Veterinary Medical Association


OBJECTIVE To assess the urinary protein-to-creatinine ratio (UPCR) of healthy sexually intact male dogs and to compare the UPCR of these dogs before and after castration.

ANIMALS 19 client- or shelter-owned healthy adult sexually intact male dogs.

PROCEDURES Physical, hematologic, and biochemical examinations and urinalysis (including calculation of the UPCR) were performed on each dog. Dogs were then castrated, and physical examination and urinalysis (including calculation of the UPCR) were performed again at least 15 days after castration.

RESULTS A dipstick test yielded positive results for protein in the urine of 10 sexually intact male dogs, but the UPCR was < 0.5 for all sexually intact male dogs. Mean UPCR for sexually intact male dogs was 0.12 (range, 0.10 to 0.32). The UPCR was < 0.2 for all castrated dogs, except for 1. Mean UPCR for all castrated dogs was 0.08 (range, 0.05 to 0.69). There was a significant difference between mean UPCR before and after castration.

CONCLUSIONS AND CLINICAL RELEVANCE In this study, pathological proteinuria was not detected in sexually intact male dogs. Positive results for a urine dipstick test should be interpreted with caution in sexually intact male dogs and should be confirmed by assessment of the UPCR. An increased UPCR in sexually intact male dogs may be considered abnormal.

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in American Journal of Veterinary Research