[Operative results in 45 cases of XXXX : technical comments on the preservation of the facial nerve and hearing function].

@entity1 @entity5513 @entity5 @entity649 @entity2103 @entity2055
This report deals with the operative results in 45 cases of @entity5513 treated in our service during the past six years. Surgery was performed in a lateral position through a small suboccipital craniectomy. @entity5 was achieved in 37 cases and nearly total resection was performed in 8 cases to preserve the facial nerve. Major complications occurred in 2 @entity1 ; one died of @entity649 and the other had persisting @entity2055 due to damage of AICA. The facial nerve was anatomically preserved in 38 cases. Six @entity1 in whom the facial nerve was not preserved underwent various types of facial nerve reconstruction. Postoperative follow-up showed excellent @entity2103 in 32 cases, good function in 11 and poor function in 3. Hearing was preserved in only one case of 11 cases who had preoperatively retained auditory function. Followings are important points for the preservation of postoperative @entity2103 and useful hearing. FACIAL NERVE: Intraoperative identification of facial nerve is crucial. The facial nerve was in most cases compressed ventrally by the @entity5 , however, 4 cases showed abnormal course of the facial nerve (dorsal in 1, rostral in 1 and caudal in 2 cases). The facial nerve was extremely thin and adherent at the ventral side of the @entity5 and invisible under the microscope in 60% of the cases. When the facial nerve is hardly separated from the @entity5 capsule, nearly total resection (leaving thin @entity5 capsule with the membranous facial nerve) is recommended.(ABSTRACT TRUNCATED AT 250 WORDS)
