This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': "The most common facial abnormality in Gardener's syndrome \nSelect and explain. \nA. Ectodermal dysplasia, B. Odontome, C. Multiple osteomas, D. Dental cysts", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. Multiple osteomas Osteomas is mandible and skull are the most common facial lesions in Gardner syndrome. Gardner syndrome is a variant of FAP characterized by: - Colorectal polyposis - Epidermoid cysts - Desmoid tumors - Osteomas - Thyroid neoplasms, and - Congenital hyperophy of the retinal pigment epithelium", 'role': 'assistant'}]