口腔内より摘出した口底に発生した巨大な類皮嚢胞の1例

• Published in: 日本口腔外科学会雑誌 Vol. 59; no. 8; pp. 542 - 545
• Main Authors: 木村, 俊介, 足立, 守安, 小熊, 哲史, 中野, 雅哉, 片山, 良子
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本口腔外科学会 20.08.2013
• Subjects: 口内法; 口底; 類皮嚢胞
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.59.542

Dermoid cysts of the floor of the mouth are relatively rare. We present the case of a large dermoid cyst involving the floor of the mouth. A 21-year-old man presented with swelling of the floor of the mouth. In this patient, CT and MRI showed a cystic lesion involving the floor of the mouth and revealed penetration of the mylohyoid muscle in the midline. The cyst was surgically removed via an intraoral approach. Histopathologically, it was diagnosed as a dermoid cyst. Complete extirpation is the treatment of choice for such dermoid cysts. The selection of surgical approach is important. Several reports have described using intraoral and extraoral approaches in patients with cysts extending over and under the mylohyoid muscle. In our patient, however, the cyst was successfully excised by an intraoral approach.