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In Vivo. 2001 May-Jun;15(3):227-31.

Myxoid malignant fibrous histiocytoma of the uterus: a case with immunohistochemical, ultrastructural and tumor cell culture studies.

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Department of Pathology II, Kansai Medical University, 10-15 Fumizono, Moriguchi, Osaka, 570-8506, Japan.


The clinical and pathological features, including ultrastructural and immunohistochemical findings, of a primary myxoid malignant fibrous histiocytoma of the uterus in a 60-year-old woman are reported. Microscopically, the principal feature of the tumor was a hypocellular area with diffuse degeneration, containing thin-walled curvilinear vessels, in which hyperchromatic small spindle and stellate cells, sometimes with vacuolated cytoplasm, were found. The transplanted tumor of primary cultured cells in nude mice presented as a prominent myxoid stroma confirming the histological structure of the primary tumor. Immunohistochemically, the presence of epithelial or heterogenous mesenchymal tumor components or cells of smooth muscle derivation were excluded and the tumor cells were positive for vimentin, CD 68, alpha 1-antitrypsin and alpha 1-antichymotrypsin. Ultrastracturally, pseudopodia and filopodia at the cell membrane and intracytoplasmic lysosomal granules were common. The patient had debulking surgery but died 38 days after the primary onset with the tumor occupying the entire abdomen and the pelvis.

[Indexed for MEDLINE]

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