Case challenge. Mass in the upper lip. Can you make the correct diagnosis?
A 45-year old white woman presented with a chief complaint of a loose crown on the maxillary right central incisor. There was a gray-black pigmented area on the alveolar mucosa in the apical region of the maxillary left central incisor and a firm mass in the left upper lip.
Kratochvil
F James
FJ
D003528:Carcinoma, Adenoid Cystic / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008048:Lip Neoplasms / Q000175:diagnosis*; D008875:Middle Aged