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[Myelofibrosis with marked subcapsular bleeding of the spleen--a case report].

A 22-year old male was admitted to Ashikaga Red Cross Hospital because of the progressing abdominal distension in May 1988. The physical examinations disclosed marked hepato-splenomegaly, lymphadenopathy and cachexic state. In the laboratory examinations, anemia, leukocytosis with left shift of nuclei and severe inflammatory reactions were found. Bone marrow aspirations were dry taps, and the biopsy showed myelofibrotic changes. Abdominal computed tomography and ultrasonography revealed a marked hepatomegaly and a giant splenomegaly with subcapsular hematoma. Philadelphia chromosome was negative and neutrophilic alkaline phosphatase score was slightly high. A little amount of peritoneal effusions was obtained and yielded S. aureus. A diagnosis of myelofibrosis with subcapsular hematoma due to spontaneous rupture of spleen and peritonitis of unknown cause was made. Operative indication was considered, but his family did not agree with it. Then conservative therapies for general conditions, those are, administrations of antibiotics and diuretics, and blood transfusions were taken. On the enlarged spleen, total irradiation was done. After the therapies, his spleen got smaller and hematoma was going to be absorbed. A rare case of myelofibrosis with splenic hematoma is reported and the conservative therapies were effective to this case.