title: Malignant lymphoma occurring in a family.
abstract: Three patients, a 57-year-old man, his 60-year-old sister, and 81-year-old mother, developed non-Hodgkin's lymphoma within an interval of 12 months. There were histologic similarities of the biopsy material from these patients, but the clinical response was variable. Two patients achieved a sustained remission, and one expired after similar chemotherapy. Studies revealed slightly decreased numbers of circulating T lymphocytes in both surviving patients, and decreased cellular reactivity to mitogens in the man. HLA typing was not conclusive; HLA haplotypes were not the same as those reported in other families with non-Hodgkin's lymphoma. Electron microscopy of biopsy material revealed no viral inclusions. Except for the familial relationship, no common etiologic factors were identified.
mesh_terms: D000368:Aged; D005260:Female; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D008223:Lymphoma / Q000235:genetics* / Q000276:immunology / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics / Q000473:pathology; D008297:Male; D008875:Middle Aged
chemical_list: D006680:HLA Antigens