Nosology of Juvenile Muscular Atrophy of Distal Upper Extremity: From Monomelic Amyotrophy to Hirayama Disease—Indian Perspective

Figure 3

A 23-year-male with weakness and wasting of left hand and forearm with anteroposterior pear-shaped cord flattening with loss of attachment of dura from subjacent lamina (red arrow) on T2WI axial MRI (a), midsagittal image showing loss of cervical lordosis (white arrow) but not showing cervical cord atrophy on neutral position sagittal T2WI MRI (b), dorsal epidural voids (green arrows) on flexion sagittal T1WI and T2WI MRI ((c), (d)), and posterior epidural crescentic enhancing mass (blue arrow) on flexion contrast sagittal T1WI MRI (e).