VIIIth nerve cavernous hemangioma mimicking a stage 1 acoustic schwannoma

Deep Neck Hemangioma Masquerading as a Peripheral Nerve Sheath Tumor

“… 5 Although internal auditory canal hemangiomas may present with facial nerve dysfunction seemingly more often than vestibular schwannomas in early stages, misdiagnosis has occurred, only to be rectified upon pathologic evaluation. 5 As they are similar radiographically to PNSTs, hemangiomas should be maintained on the clinician’s differential when considering any indolent neck mass suspicious for a nerve sheath lesion. Patients should be counseled that definitive diagnosis may require pathologic analysis and that surgical excision of the tumor may be advised.…”

“…Given their low frequency in adulthood, hemangiomas are often diagnosed on pathologic examination. The difficulty in differentiating neck hemangiomas and PNSTs is not an isolated phenomenon, as challenges distinguishing internal auditory canal hemangiomas from vestibular schwannomas have also been recorded 5 . Although internal auditory canal hemangiomas may present with facial nerve dysfunction seemingly more often than vestibular schwannomas in early stages, misdiagnosis has occurred, only to be rectified upon pathologic evaluation 5 .…”

“…The difficulty in differentiating neck hemangiomas and PNSTs is not an isolated phenomenon, as challenges distinguishing internal auditory canal hemangiomas from vestibular schwannomas have also been recorded 5 . Although internal auditory canal hemangiomas may present with facial nerve dysfunction seemingly more often than vestibular schwannomas in early stages, misdiagnosis has occurred, only to be rectified upon pathologic evaluation 5 . As they are similar radiographically to PNSTs, hemangiomas should be maintained on the clinician’s differential when considering any indolent neck mass suspicious for a nerve sheath lesion.…”

An isolated cavernous malformation of the sixth cranial nerve: A case report and review of literature

“…[ 1 , 4 - 6 , 17 , 25 , 31 , 32 , 36 , 46 , 49 , 51 , 53 , 54 , 59 ] There are at least 10 reported cases of CMs in the VII/VIII nerve complex (excluding the internal auditory canal CMs), with the main complaint of hearing loss. [ 10 , 30 , 34 , 46 ] In nine confirmed cases, the oculomotor nerve was involved, mainly with diplopia and ptosis as the prominent manifestations. [ 9 , 39 , 46 ] The CMs of the trigeminal nerve were also described in six cases, typically presenting with facial dysesthesia or hyperesthesia.…”