舌神経と顎下管の解剖学的関係

Anatomical Relationship Between the Lingual Nerve and Submandibular Duct.

抄録

本研究の目的は、舌神経と顎下管の解剖学的関係を調査することである。この研究には、顎下腺または舌下腺の疾患を有し、顎下腺唾石、顎下腺、または舌下腺の口腔内摘出術を受けた患者1403人が含まれた。全患者のうち、33人が両側手術を受けた。すべての手術は一人の外科医が行い、舌神経と顎下管の解剖学的関係は常に術中に確認され、手術記録に記録された。解剖学的関係は術中所見に基づいて検討された。顎下管の上方を横切る舌神経は1436例中8例（0.6％）に認められた。右側4例、左側4例であった。顎下腺の下にある舌神経は99.4％に認められた。舌神経が顎下管の上方を横切ることは稀であるが、口腔内唾液腺手術の際には舌神経を傷つけないように注意すべきである。

The purpose of this study was to investigate the anatomical relationship between the lingual nerve and submandibular duct. This study included 1403 patients with submandibular or sublingual gland diseases who underwent intraoral removal of submandibular gland sialoliths, submandibular glands, or sublingual glands. Of all patients, 33 patients underwent bilateral surgeries. All surgeries were performed a single surgeon, and the anatomical relationship between the lingual nerve and submandibular duct was always identified intraoperatively and recorded in the operation recorded. The anatomical relationship was investigated based on the intraoperative findings. The lingual nerve which crosses above the submandibular duct was detected in 8 of 1436 sides (0.6%). There were 4 in the right sides and 4 in the left sides. The lingual nerve below the submandibular gland was seen in 99.4%. Although the lingual nerve crosses above the submandibular duct with a rarer incidence, surgeons should beware of injuring the lingual nerve during intraoral salivary gland surgery.