title: Sacrococcygeal teratoma masquerading as fistula-in-ano.
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000151:congenital / Q000175:diagnosis* / Q000473:pathology; D003050:Coccyx; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D012003:Rectal Fistula / Q000175:diagnosis* / Q000473:pathology; D012447:Sacrum; D013724:Teratoma / Q000151:congenital / Q000175:diagnosis* / Q000473:pathology