components were stained positive for vimentin, CD68, smooth muscle actin; negative for CD34, S100, PSA, desmin (Figure 2).
transformation (Leiomyosarcoma) in polyostotic fibrous dysplasia.
component is usually composed of undifferentiated spindle cell neoplasm.
Based on the histological subtype, the epithelioid subtype should be differentiated from the peritoneal or ovarian primitive carcinoma; the sarcomatous
subtype from the digestive or uterine sarcomas [10, 11].
Surgical treatment is not appropriate because of severe thickening in the cranial bones and radiotherapy should not be the first-line option because it leads to sarcomatous
Primary malignant GCTs are those with malignant sarcomatous
components that are present de novo in conjunction with a giant cell tumor of bone and are exceedingly rare .
Leiomyomatosis peritonealis disseminata complicated by sarcomatous
transformation and ovarian torsion: Presentation of two cases and review of the literature.
6) In our case, no sarcomatous
change was detected on histopathologic examination.
Microscopical Examination revealed predominately solid tumor showing biphasic components; primitive blastomatous elements composed of sheets of small round cells with finely granular chromatin of round/ oval nuclei and scanty cytoplasm admixed with sarcomatous
spindle cells and tumor giant cells with myxoid stroma.
Histologically, the kidney was widely occupied by a pleomorphic sarcomatous
The most frequent type found in malignant tunical mesothelioma is the epithelial type, followed by the mixed type, with the pure sarcomatous
type being very rare (1,5).
Small hepatocellular carcinoma presenting with massive metastasis in the peritoneum, mimicking sarcomatous