The aim of this study was to retrospectively define those patients with unequivocal primary bone lymphoma presenting to the Sheffield Lymphoma Group and document patient and tumour characteristics and management strategies, and correlate these with survival. Thirty-seven patients were documented from a total of 3148 cases of non-Hodgkin's lymphoma seen over 34 years. There were 17 males and 20 females, with a mean age of 55.4 years (range, 27-78). Pain was the most commonly presented symptom (67.5%), and the pelvis was the most frequently presented site (21.3%). Grade 2 and diffuse large B cell lymphoma comprised the majority of histologies (78.7% and 70.3%, respectively). Treatment was most often with radiotherapy alone (41.8%) or combined with CHOP-like chemotherapy (37.9%). The overall response rate was 56.7%, and 5- and 10-year survival rates were 64.5% and 49.6%, respectively. Univariate analysis showed an age of <60 years and complete response to be favourable prognostic factors. There was a trend toward better survival with combined modality therapy involving CHOP-like chemotherapy. Bone lymphoma has a better survival than other extranodal lymphomas. Younger age and complete response are favourable predictive factors. Combined modality treatment is likely to be the treatment of choice but this remains to be confirmed in large prospective multicentre studies.

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