Trichoepithelioma, not Basal cell carcinoma, in an 8-year-old child.

摘要

This was a difficult case. The biopsy was initially interpreted as "basophilic cellular tumor" with a recommendation for reexcision to ensure complete histologic evaluation and removal of the lesion. Mohs surgery at this site was appropriate given the anatomic location of the lesion. The immunohistochemical stains demonstrated mixed features of trichoepithelioma (TE) and basal cell carcinoma (BCC). I reported CD 10 and Bcl-2 stains in the original pathology report. The CD 10 stain highlighted the peritumoral stroma focally but was predominantly negative in tumor lobules suggestive of TE, but the peritumoral stroma was negative for CD 10 in other areas. The Bcl-2 staining was diffusely positive within lobules of tumor, suggestive of BCC.