Secondary malignant fibrous histiocytoma following refractory langerhans cell histiocytosis.

We describe a rare case of secondary malignant fibrous histiocytoma (MFH) following Langerhans cell histiocytosis (LCH). A 23-year-old Japanese male exhibited systemic lymphadenopathy, multiple lung tumors, and osteolytic changes in bilateral iliac bones in 1989. A biopsy specimen from the left iliac bone revealed an infiltration of S-100 protein-positive histiocyte-like cells intermingled with eosinophils, which confirmed the diagnosis of eosinophilic granuloma, a type of LCH.

[Successful treatment with etoposide by oral administration for recurrence of gastric diffuse large B-cell lymphoma after surgical resection--a case report].

A 64-year-old woman, who had been treated for gastric diffuse large B-cell lymphoma (DLBCL) by total gastrectomy and received 3 courses of CHOP therapy at 61 years of age, was diagnosed with recurrence of DLBCL in the small intestine. After the small intestinal tumor was resected, multiple metastases were found in the liver. Because intensive chemotherapy was difficult for her poor performance status, 50 mg of etoposide daily by oral was administered for 21 consecutive days.

Pharmacological study of modified intermediate-dose cytarabine therapy in patients with acute myeloid leukemia.

Background: Instead of the original intermediate dose (0.5 g/m2), a modified intermediate-dose 1-beta-D-arabinofuranosylcytosine (ara-C) therapy (1 g/m2, 1-h intravenous infusion) was pharmacologically studied in 11 leukemic patients.

Patients And Methods: The concentrations of ara-C and its inactive metabolite, 1-beta-D-arabinofuranosyluracil (ara-U) in the plasma, urine and cerebrospinal fluid were determined using high performance liquid chromatography.