耳下腺内顔面神経鞘腫の2例
1988 年 31 巻 1 号 p. 45-51
詳細
1988 年 31 巻 1 号 p. 45-51
Two cases of intraparotid facial nerve schwannoma are reported. Case 1 was a 39-year-old male and case 2 was a 47-year-old female. Each patient complained of slow growing mass in the right parotid region. Case 1 was diagnosed at surgical operation by frozen section. As the facial nerve could not preserved, nerve grafting was performed. Case 2 was diagnosed after the operation.
Schwannoma, as a rule, is solitary, slow growing and symptomless. Many cases of intratenporal facial nerve schwannoma have been reported so far, but only 53 cases of intraparotid schwannoma have been reported until now in Western countries and 14 cases in Japan. Intratemporal cases usually exhibit hearing loss, otalgia and facial palsy. But intraparotid cases are symptomless except a mass in the parotid region. Therefore preoperative diagnosis is often difficult in intraparotid cases.
