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P397: MIDDLE CEREBELLAR PEDUNCLE APPROACH FOR RESECTION OF LARGE PONTINE CAVERNOUS MALFORMATION
Moleca Ghannam, MD, MPhil¹; Tina Wang, MA²; Timothy R Miller, MD²; Dheeraj Gandhi, MBBS²; Mohamed Labib, MD²; ¹University at Buffalo; ²University of Maryland School of Medicine

We present a female in her seventies with progressive cranial neuropathies and gait decline found to harbor a large pontine cavernous malformation. MRI showed a left-eccentric lesion with hemosiderin rim, edema, and tract effacement. A left retrosigmoid craniotomy with middle cerebellar peduncle entry was performed. Microsurgical resection achieved gross total removal while preserving perforators and cranial nerves. Postoperative imaging confirmed complete resection, and patient experienced marked neurological recovery, regaining strength, gait, and cranial nerve function.

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