disease arises from structure disease arises from alteration in structure basal cell neoplasm epithelial neoplasm basal cell neoplasm MESH:D018295 SCTID:127570002 neoplasm, basal cell MEDGEN:104921 UMLS:C0206710 ICDO:8090/1 A neoplastic proliferation of basal cells in the epidermis (part of the skin) or other anatomic sites (most frequently the salivary glands). The basal cell neoplastic proliferation in the epidermis results in basal cell carcinomas. The basal cell neoplastic proliferation in the salivary glands can be benign, resulting in basal cell adenomas or malignant, resulting in basal cell adenocarcinomas. MONDO:0020799 basal cell tumor basal cell tumour EFO:1001763 NCIT:C3784