vesical clear cell myomelanocytic tumor
sugar tumor, perivascular epithelioid cell tumor, PEComa
Clear cell myomelanocytic tumors are considered to be a member of the family of perivascular epithelioid cell tumor. These tumors have a predilection for falciform ligament/ligamentum teres.
Synpopsis
clear to eosinophilic, epithelioid, and spindled cells arranged in fascicles or packets
delicate vascular stroma was found among the nests
Immunohistochemistry
HMB-45+
smooth muscle actin+
S-100-
Melan-A-
desmin-
pan-cytokeratin-
References
Pan CC, Yu IT, Yang AH, Chiang H. Clear cell myomelanocytic tumor of the urinary bladder. Am J Surg Pathol. 2003 May;27(5):689-92. PMID: #12717254#
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