This study reviews the medical records of 56 dogs diagnosed with lymphoma based on thecytological and/or histological results between January 1, 2009 and December 31, 2010. Most of thedogs were middle-aged to old, and were diagnosed with multicentric lymphoma (ML) (n=36). Themajority of the dogs were presented in stages III to V (n=55) and substage b (n=43). A completeblood count and serum biochemistry, urinalysis, serum protein electrophoresis, thoracic radiographsand/or abdominal ultrasound were performed. The results correlated with previously describedresults in the literature. Therapy was initiated in 80% of the dogs (n=45). After diagnosis, the mediansurvival time of 62% of these dogs (n=28) treated with only prednisolone was 32 days (range 3 – 224days). For 24% of the dogs (n=11) treated with chemotherapy, the median survival time was 119days (range 11 - 273 days). Surgical resection of the macroscopic tumor was performed in theremaining six dogs (13%). Three of these dogs received subsequent prednisolone therapy. Themedian survival time of these six dogs was 47 days (range 0 – 669 days). The dogs that receivedchemotherapy had significantly longer survival times than those treated with only prednisolone,although negative prognostic factors were present in all of the cases treated with chemotherapy.