Clear cell sarcoma of the ileum: the crucial role of cytogenetics for the diagnosis.
case_report · Level V
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Abstract
We report a case of clear cell sarcoma that arose in the ileum and metastasized to the liver. The tumor cells did not contain melanin or glycogen; expressed S-100 protein, but not HMB45; and contained possible atypical melanosomes when examined by electron microscopy. They carried a clonal chromosomal rearrangement: 50,XY,t(2;7)(q37;q22),+8,+8,+9,+11, t(12;22)(q13;q12). The diagnosis was greatly facilitated by the cytogenetic analysis. The translocation t(12;22)(q13;q12-13) has been reported as specific for clear cell sarcomas.
Medical subject headings
- Ileal Neoplasms
- Liver Neoplasms
- Sarcoma, Clear Cell