Picture quiz: basal cell carcinoma, herpes zoster and a dental sinus.
D002280:Basal Cell Carcinoma / Q000473:pathology*; D003751:Dental Fistula / Q000473:pathology*; D003937:Diagnosis, Differential; D005145:Face; D005153:Facial Neoplasms / Q000473:pathology*; D006562:Herpes Zoster / Q000473:pathology*; D006801:Humans; D012874:Skin Diseases, Infectious / Q000473:pathology*