Midline malignant B-cell lymphoma with leukemic transformation

Leukemic transformation of anaplastic large-cell lymphoma.

A 9-year-old boy was diagnosed with stage III ALK-positive anaplastic large cell lymphoma (ALCL) with no evidence of bone marrow and central nervous system disease. Seven months later he had a normocytic anemia (hemoglobin 79 g/L), severe thrombocytopenia (platelets 15 109/L), and leukocytosis (white blood cell count 50.8 109/L). The automated differential showed neutrophils 28.5 109/L, monocyt...

Intravascular large B-cell lymphoma with leukemic component.

A 59-year-old man presented with acalculous cholecystitis and hepatomegaly. Routine laboratory tests were remarkable for thrombocytopenia (125 109/L), alanine aminotransferase 95 U/L, aspartate aminotransferase 760 U/L, alkaline phosphatase 223 U/L, and lactate dehydrogenase 3755 U/L. A peripheral smear showed morphologically normal red blood cells and large atypical lymphoid cells (panel A and...

Diffuse large B-cell lymphoma in leukemic phase.

A 76-year-old man presented with right shoulder pain, weight loss, and night sweats. Complete blood count showed isolated thrombocytopenia (26 3 10/L). The blood film demonstrated medium to large atypical lymphoid cells (12% of leukocytes), many with polylobated nuclei or flower cell morphology (panel A, image obtained using Olympus BX51 microscope, 31000 magnification). Computerized tomography...

Diffuse large B-cell lymphoma presenting in the leukemic phase

Diffuse large B-cell lymphoma (DLBCL) is the most common non-Hodgkin lymphoma comprising a heterogeneous group of disorders with variable histological and clinical behavior. Although other lymphomas may present in the leukemic phase more frequently, this appearance is unusually observed among DLBCL cases. Diagnosing lymphoma is not always easy, and the patient's clinical status quite often may ...

Patterns of Gelatinase-B Expression in Leukemic Cell Lines