title: Cutaneous lymphadenoma.
abstract: Lymphoepithelial neoplasms are biphasic tumours that contain both epithelial and lymphoid components. This heterogeneous group includes benign cutaneous lymphadenoma (CL), malignant lymphoepithelioma-like carcinoma of the skin and dermal thymus. We present two cases of CL in male subjects of 14 and 64 years of age. The latter man had a history of multiple basal cell carcinomas (BCCs) and solar keratoses. Histological sections of both tumours revealed similar features of an invasive non-ulcerated tumour with a mixed architecture of BCC and trichoepithelioma. Immunocytochemical examination revealed a biphasic epithelial tumour of follicular differentiation, possibly a variant of trichoepithelioma or a BCC. Within the epithelial islands there was a heavy infiltration that was confirmed as CD3-positive T cells and S-100-positive dendritic cells by immunocytochemistry.
authors.affiliation: Department of Dermatology, University of Wales College of Medicine, Cardiff, UK. serhatinaloz@hotmail.com
authors.forename: H S
authors.initials: HS
authors.lastname: Inalöz
authors.forename: M M
authors.initials: MM
authors.lastname: Chowdhury
authors.forename: A G
authors.initials: AG
authors.lastname: Knight
mesh_terms: D000235:Adenolymphoma / Q000175:diagnosis / Q000473:pathology*; D000293:Adolescent; D001707:Biopsy, Needle; D002280:Basal Cell Carcinoma / Q000175:diagnosis / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology*