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  • Author or Editor: Paola Valenti x
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Abstract

Objective—To determine factors predicting survival in dogs with high-grade multicentric lymphoma.

Design—Retrospective cohort study.

Animals—127 dogs with high-grade multicentric lymphoma evaluated at 4 veterinary hospitals from 2000 to 2009.

Procedures—Records were reviewed to identify dogs with completely staged high-grade multicentric lymphoma treated with chemotherapy. Data collected included signalment, history, hematologic findings, tumor characteristics, treatment, and outcome. Long-term survival was defined as surviving > 2 years after diagnosis. Variables were analyzed for associations with dogs living > 2 years.

Results—Among the 127 enrolled dogs, 13 (10%) survived > 2 years with a median survival time of 914 days (range, 740 to 2,058 days). Survival rates at 3, 4, and 5 years were 4%, 3%, and 1 %, respectively. At diagnosis, 11 of the 13 long-term survivors had a body weight ≥ 10 kg, PCV ≥ 35%, absence of ionized hypercalcemia, centroblastic lymphoma, immunophenotype B, absence of bone marrow involvement, and lymphoma stages I through IV and were not previously treated with corticosteroids. The same combination of factors was present in 26 of 114 (23%) dogs surviving ≤ 2 years, yielding a negative predictive value of 97.8% for long-term survivors. Four of the 6 long-term survivors that died during the study died of another cancer; 3 of them had osteosarcoma.

Conclusions and Clinical Relevance—Absence of the aforementioned combination of variables at diagnosis may help identify dogs with lymphoma that will not survive > 2 years. Other types of neoplasia, in particular osteosarcoma, may develop in long-term–surviving dogs.

Full access
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association

Abstract

Objective—To describe clinical characteristics, treatment, and outcome of dogs with inflammatory carcinoma (IC) and identify patient-, tumor-, and treatment-related factors associated with overall survival time.

Design—Retrospective case series.

Animals—43 client-owned dogs.

Procedures—Records of dogs with a clinical diagnosis of IC that had histologic evidence of dermal lymphatic invasion were reviewed. Data on clinical staging, treatment, toxicoses, response, and survival time were retrieved.

Results—26 (60%) dogs had primary IC and 17 (40%) had secondary IC. Thirty-five (81%) dogs had distant metastases and 2 (5%) had local metastases at the time of initial examination. Six of 29 (21%) dogs had a coagulopathy. Sixteen (37%) dogs did not receive specific treatment for IC, 24 (56%) received medical treatment only, 2 (5%) underwent surgical excision and received medical treatment, and 1 (2%) underwent surgical excision only. Forty-one (95%) dogs had progressive disease, and 2 (5%) had stable disease. Mean survival time for all dogs was 60 days (range, 1 to 300 days). Dogs with a coagulopathy survived a significantly shorter time than did dogs without a coagulopathy (odds ratio, 0.28), and dogs that received medical treatment survived significantly longer than dogs that did not (odds ratio, 2.54).

Conclusions and Clinical Relevance—Results suggested that mammary IC is a biologically aggressive condition in dogs associated with a guarded prognosis. In addition, results suggested that medical treatment may improve outcome, thereby supporting its use in dogs with IC.

Full access
in Journal of the American Veterinary Medical Association