Metastatic basal cell carcinoma with squamous appearances in the naevoid basal cell carcinoma syndrome.
A patient with the naevoid basal cell carcinoma syndrome developed a secondary carcinomatous deposit in the pelvis. Persisting tumour in the skull and the secondary deposit in the pelvis contained areas of squamous differentiation. This confirms that the appearances of baso-squamous (or transitional or metatypical-cell) carcinoma can develop from typical basal cell carcinoma which had not been subjected to radiotherapy or to more than one surgical excision.
D001845:Bone Cysts; D002280:Basal Cell Carcinoma / Q000473:pathology; D002281:Carcinoma, Basosquamous / Q000473:pathology; D006258:Head and Neck Neoplasms / Q000473:pathology; D006801:Humans; D007571:Jaw Diseases; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D012272:Ribs / Q000002:abnormalities*; D012878:Skin Neoplasms / Q000473:pathology; D013577:Syndrome