[Surgical removal of lateral pontine cavernous angioma: review of the surgically treated cases in the literature].

Tokumitsu N, Sako K, Hashimoto M, Aizawa S, Izumi N, Yonemasu Y

No shinkei geka. Neurological surgery

Jan 1, 1993

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Abstract

A case of cavernous angioma of the pons which was surgically and successfully excised was reported. A 36 year-old man complained of progressive headache, double vision and tinnitus. Neurologic examination revealed left fifth, sixth and seventh cranial nerve palsies. He had left limb ataxia and right sided hemisensory deficit. A computed tomographic (CT) scan on admission disclosed a hematoma in the left lateral portion of the pons. Serial CT scans demonstrated progressive increase of hematoma. MRI scans revealed an area of mixed signal intensity in T1 weighted images. These findings were thought to be consistent with a cavernous angioma. Three months after the onset, surgery was performed using a lateral suboccipital approach. Histological examination disclosed cavernous angioma. After surgery, the patient's neurological deficits improved, and after 3 months, all symptoms except the mild limb ataxia had disappeared.