Spontaneous regression of intracranial aneurysms is rare. Only 18 pseudoaneurysms of the superior cerebellar artery have been reported in the literature, the minority of which are located in the cortical segment. An incidentally discovered asymptomatic unruptured cortical segment side wall superior cerebellar aneurysm that demonstrated spontaneous sustained closure has not been reported. This raises the question of considering a conservative approach to treatment with noninvasive serial monitoring, instead of high risk endovascular or surgical management in select patients with such aneurysms.