PURPOSE: To describe the incidence of primary bone marrow involvement (BMI) in Hodgkin's disease (HD) and its correlation with clinical and laboratory features present at diagnosis, and to evaluate the prognostic relevance of BMI. PATIENTS AND METHODS: Between 1983 and 1991, 2,307 patients with HD were treated according to two trial generations (HD1-3 and HD4-6) of the German Hodgkin's Lymphoma Study Group (GHSG). RESULTS: One hundred thirty-five cases of primary BMI were observed. The incidence of BMI was 4.8% in the HD4-6 study generation, which included all stages. Among stage IV patients, 32% had BMI. Among those with BMI, other organs were also involved in 33%. Among all patients, the presence of BMI was significantly associated with B symptoms, lymph nodes on both sides of the diaphragm, mixed cellularity histologic subtype, leukocytopenia, anemia, thrombocytopenia, lactate dehydrogenase (LDH) level more than 400 U/L, and erythrocyte sedimentation rate (ESR) more than 40 mm/h. BMI was negatively correlated with a large mediastinal tumor (3.7% v 20.0% in non-BMI cases). Eighty-seven of 108 (81%) assessable patients with BMI achieved a complete remission (CR). This compares favorably with the overall CR rate in all stage IIIB/IV patients. Among stage IV patients, BMI has no prognostic relevance with regard to freedom from treatment failure and overall survival. Twenty-one patients with BMI relapsed after having achieved a CR. Only five of these (24%) again had a positive bone marrow biopsy. CONCLUSION: The prognosis of patients with BMI is not worse than the prognosis of other advanced-stage HD patients. BMI alone does not define a special high-risk group in which a different treatment approach is indicated.
PURPOSE: To describe the incidence of primary bone marrow involvement (BMI) in Hodgkin's disease (HD) and its correlation with clinical and laboratory features present at diagnosis, and to evaluate the prognostic relevance of BMI. PATIENTS AND METHODS: Between 1983 and 1991, 2,307 patients with HD were treated according to two trial generations (HD1-3 and HD4-6) of the German Hodgkin's Lymphoma Study Group (GHSG). RESULTS: One hundred thirty-five cases of primary BMI were observed. The incidence of BMI was 4.8% in the HD4-6 study generation, which included all stages. Among stage IV patients, 32% had BMI. Among those with BMI, other organs were also involved in 33%. Among all patients, the presence of BMI was significantly associated with B symptoms, lymph nodes on both sides of the diaphragm, mixed cellularity histologic subtype, leukocytopenia, anemia, thrombocytopenia, lactate dehydrogenase (LDH) level more than 400 U/L, and erythrocyte sedimentation rate (ESR) more than 40 mm/h. BMI was negatively correlated with a large mediastinal tumor (3.7% v 20.0% in non-BMI cases). Eighty-seven of 108 (81%) assessable patients with BMI achieved a complete remission (CR). This compares favorably with the overall CR rate in all stage IIIB/IV patients. Among stage IV patients, BMI has no prognostic relevance with regard to freedom from treatment failure and overall survival. Twenty-one patients with BMI relapsed after having achieved a CR. Only five of these (24%) again had a positive bone marrow biopsy. CONCLUSION: The prognosis of patients with BMI is not worse than the prognosis of other advanced-stage HDpatients. BMI alone does not define a special high-risk group in which a different treatment approach is indicated.
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