A spindle cell variant of diffuse large B-cell lymphoma is characterized by T-cell/myofibrohistio-rich stromal alterations: analysis of 10 cases and a review of the literature.

Spindle-shaped diffuse large B-cell lymphoma (Sp-DLBCL) has been recognized as a rare morphologic variant of DLBCL. However, the biological processes that contribute to the specific features of Sp-DLBCL remain poorly understood. In this study, a combined immunophenotypic and genetic analysis was performed in 10 Sp-DLBCL.

Uncommon case of chronic myeloid leukemia with multiple myeloma.

We describe a 72-year-old woman who was diagnosed with asymptomatic multiple myeloma (MM) while being treated for Philadelphia (Ph)-positive chronic myeloid leukemia (CML) with imatinib mesylate (400 mg/day). The diagnosis of CML was based on the presence of the Ph chromosome and chimeric BCR-ABL messenger RNA. Three months after starting imatinib mesylate treatment, the patient achieved a complete cytogenetic response.

[Successful treatment with intensive immunosuppressive therapy and mechanical ventilation for idiopathic pneumonia syndrome following allogeneic bone marrow transplantation].

A 45-year-old man with acute myelogenous leukemia (WHO classification, AML with multilineage dysplasia) received allogeneic bone marrow transplantation from an HLA-identical brother in first remission. He became febrile on day 7, and pulmonary failure and multi-organ failure developed subsequently, requiring mechanical ventilation. Chest X-ray and CT scan demonstrated diffuse interstitial shadows, suggesting the development of idiopathic pneumonia syndrome.

[Bacillus cereus sepsis and subarachnoid hemorrhage following consolidation chemotherapy for acute myelogenous leukemia].

A 64-year-old man with acute myelogenous leukemia (FAB classification, M7) in remission received consolidation chemotherapy with mitoxantrone/cytosine arabinoside. WBC counts decreased to 0/microl on day 14, and fever (39.3 degrees C) and epigastralgia developed on day 15.

Leukemic transformation of Langerhans cell sarcoma.

A 57-year-old man became aware of left supraclavicular lymph node swelling, which was subsequently diagnosed as Langerhans cell sarcoma, based on a positive immunophenotype for CD1a, S-100 protein, and langerin, and histologically bizarre pleomorphism. The tumor became leukemic 3 months later. Despite intensive chemotherapy, he died of disease progression 7 months after the initial diagnosis.

Clinico-pathological characteristics of p63 expression in B-cell lymphoma.

A member of the family of p53-related genes, p63 plays a role in regulating epithelial proliferation and differentiation programs, but the pathological and clinical meaning of p63 in B-cell lymphoma has not been elucidated. We investigated the expression pattern of p63 in B-cell malignancies, and evaluated the correlation between the expression of p63 and other germinal center markers. Ninety-eight B-cell lymphomas (28 FCL, 5 MCL, and 65 DLBCL) were analyzed by immunohistochemical examination for p63, bcl-6, CD10 and MUM-1 proteins, and for rearrangement of bcl-2/IgH.

[Fatal opportunistic infection following disappearance of antibodies by immunosuppressive therapy in a patient with acquired factor VIII inhibitor].

An 83-year-old man without history of the hemorrhagic diathesis was admitted to our hospital with a 4-months history of purpura and subcutaneous hematoma. He had an extraordinarily prolonged activated partial thromboplastin time, and his factor VIII (F VIII) activity level was 0.2%.