Spinal muscular atrophy with oculomotor palsy, epilepsy, and cerebellar hypoperfusion.

We report a boy with spinal muscular atrophy (SMA) type 1, who developed novel clinical and neuroradiologic features, indicating the broad spectrum of this degenerative disease. Widespread lesions in the central nervous system were disclosed by magnetic resonance imaging and single photon emission computed tomography (SPECT) studies. In particular, scattered regions of hypoperfusion demonstrated by SPECT suggested multisystem involvement including the cerebellum. The novel features of this patient were complex partial seizures and oculomotor palsy.