title: Follicular lymphoma with blastic conversion: a report of two cases with confirmation by immunoperoxidase studies on bone marrow sections.
abstract: Two cases of low-grade follicular lymphoma are presented in which evolution to a blastic phase with marrow and peripheral blood involvement occurred. One case was a follicular and diffuse mixed-cell lymphoma, while the second was a follicular and diffuse small cleaved-cell lymphoma. In both cases, at two and three years after initial presentation, a clinical picture resembling acute leukemia developed, with immature blastic-appearing infiltrates in the bone marrow and circulating blastic cells. Immunoperoxidase studies on fresh frozen sections of bone marrow in both cases confirmed the B-cell nature of the infiltrates and excluded the clinical impression of acute non-lymphocytic leukemia. The differential diagnosis of hematolymphoid infiltrates in the bone marrow in patients with follicular lymphoma is discussed.
mesh_terms: D000328:Adult; D000911:Antibodies, Monoclonal / Q000276:immunology; D001365:Axilla; D001402:B-Lymphocytes / Q000473:pathology; D001706:Biopsy; D001853:Bone Marrow / Q000473:pathology*; D003937:Diagnosis, Differential; D005629:Frozen Sections; D006651:Histocytochemistry; D006801:Humans; D007124:Immunoenzyme Techniques; D008198:Lymph Nodes / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D008224:Lymphoma, Follicular / Q000473:pathology*; D008297:Male; D008875:Middle Aged
chemical_list: D000911:Antibodies, Monoclonal