The diagnosis of auditory neuroma can be confirmed with the following typical manifestations (1) Medical history Auditory neuroma has a long course, with an average duration from onset to hospitalization ranging from a few months to more than 10 years, with an average duration of 4 years. (2) Typical clinical manifestations include tinnitus, sensory deafness and balance disorders, facial numbness, peripheral facial palsy and altered sense of taste on the affected side, diplopia, limited abduction of the affected eye, hoarseness, choking on water and dysphagia, and other signs and symptoms of local involvement; signs and symptoms of cranial hypertension such as optic papilloedema, increased headache, and vomiting (mainly seen in large tumors, especially those with hydrocephalus). (3) Neuro-otologic examination A. Hearing test: unilateral sensorineural deafness, air conduction > bone conduction on the affected side, comparison of bone conduction on both sides in favor of the healthy test; pure tone hearing threshold measurement mainly shows high-frequency decreasing type; language discrimination rate measurement shows decreased language resolution (for sensorineural deafness, language discrimination is not impaired in conductive deafness); tone decay test is above 30db (normal and conductive deafness does not exceed 5~ 10db). B. Vestibular function examination of hot and cold test has reduced responsiveness to hot and cold stimuli, and spontaneous nystagmus is seen on spontaneous nystagmus examination. (4) Brainstem evoked potential examination often shows prolonged latency of wave Ⅰ~Ⅲ and wave Ⅰ~Ⅴ intervals, and large individuals may show the disappearance of all waves except wave Ⅰ. (5) Imaging examination ① head CT endo-aural tract is conical or funnel-shaped enlargement, lesions are uniform or heterogeneous or circularly enhanced, cerebellum and fourth ventricle are deformed by compression and shifted to the opposite side, may be combined with supratentorial obstructive hydrocephalus, but there is difficulty in diagnosing small tumors located in the endo-aural tract. MRI can clearly show the tumor characteristics (size, boundary, blood flow, invasion, peritumoral edema), the relationship with surrounding tissues, and especially the relationship with brainstem. MRI can clearly show the nature of the tumor (size, boundary, hematology, extent of invasion, peritumoral edema), relationship with surrounding tissues, especially the relationship with brainstem and blood vessels, and the presence of secondary supratentorial hydrocephalus. Large auditory neuromas (>3 cm in diameter) are seen as cystic lesions on CT or MRI films; in fact, these are often solid. The adjacent cerebrospinal fluid pool obstruction also appears as a cyst.