Multiple arm lipomatosis and posterior interosseus nerve palsy

Lipomas are common benign soft tissue tumours which tend to be indolent and risk free. Lipomas rarely spread in the deep soft tissue causing posterior interosseous nerve (PIN) neuropathy.We present two patients with multiple lipomatosis of the arms and PIN paralysis, with a brief review of the cases reported in literature.We emphasize the role of electromyographic study as unique methodical capable to reveal an early radial nerve damage, permitting an optimal post-surgical nerve function recovering.