[Muscular pseudohypertrophy and intraspinal neurinoma]. / Seudohipertrofia muscular y neurinoma intrarraquídeo.

We present a patient with protracted hypertrophy of the left calf, light triceps suralis weakness, and mild inconstant left foot pain. The clinical picture evolved slowly throughout more than eight years, and lately slight weakness in anterior right leg musculature appeared. The magnetic resonance examination revealed the existence of an intrarachideal extraspinal tumor adjacent to the conus medullaris that histologically was a neurinoma. Although the neurogenic pseudohypertrophy has diverse etiology, the present association is unpublished.