耳下腺唾石症の2例と唾石の成分

Two Cases of Sialolithiasis of the Parotid Gland and Components of Salivary Calculi

I．緒言

　唾石症は耳鼻咽喉科領域でしばしば経験する疾患であり，食物摂取時の唾液排出障害および疼痛，腫脹が主症状である。唾石は顎下腺に発生することが多く，耳下腺および舌下腺の発生は稀とされている。今回著者らは2例の耳下腺管内唾石症を経験したのでその詳細について報告するとともに，過去2年間の摘出結石23例について赤外線吸光法による唾石の成分分析を行ったので報告する。

　It is generally accepted that sialolithiasis of the parotid gland is relatively rare. The authors have recently encountered two cases of this disease.

　The components of salivary calculi in these two cases and in 21 cases of sialolithiasis of the submandibular gland which we encountered in the past two years were analyzed by i nfrared spectrometry by means of a Hitachi 260-30 infrared spectrometer.

　Salivary stones in both the parotid and submandibular glands were mainly composed of calcium phosphate, calcium carbonate, and protein.

　Salivary stones in the parotid gland tended to contain slightly large amounts of calcium phosphate and calcium carbonate and a small amount of protein than salivary stones in the submandibular gland.