3 year history of well defined cream lesion at limbus.
The lesion was focally positive for CD34, Factor 13a, CD68, ASMA and negative for neurofilament, Melan A, S100, HMB45, cytokeratin and showed no pleomorphism, necrosis or mitotic activity. Which further immuno markers may assist in securing a diagnosis?
What is the diagnosis?
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CD57 (NK1-C3) was strongly positive on all the cells.
Epithelioid fibrous histiocytoma of the limbal conjunctiva.