Epithelium-lined oral sinus tract.
D003751:Dental Fistula / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010483:Periapical Diseases / Q000473:pathology*; D014092:Tooth Root / Q000473:pathology