A Case of Spinal Muscular Atrophy with Hypertrophy of Calf-Muscles

ABSTRACT

Hypertrophy of the calves has been described in spinal muscular atrophy (SMA) syndrome. Pearn and Hudgson described a new spinal muscular atrophy syndrome characterized adolescent onset, gross hypertrophy of the calves, and a slowly progressive clinical course. We saw a 16-year-old female who had weakness of the thighs with atrophy and hypertrophy of calfmuscles. The patient was studied with EMG and muscle biopsy and thought to be as SMA with hypertrophied calf-muscles.