Lipomas of the Hand: Rare Location, About 4 Cases and Review of the Literature

Lipoma is a benign mesenchymal tumor that develops in abundant areas of fatty tissue. Its location in the hand is rare. The first lipoma of the hand was described by Stein in 1959. The targeted localizations in the hands concern the thenar and hypothenar eminences, more rarely digital localizations. The clinical symptomatology varies according to the location, with progressively increasing size leading to a hold on the mobility of the fingers and a risk of neurological complications. Ultrasound or better Magnetic Resonance Imaging (MRI) is necessary for diagnosis. The anatomopathological study is essential to confirm the histological nature and eliminate a malignant tumor. Surgical excision remains the treatment of choice for lipomas. Postoperative evolution is generally favorable without local recurrence and with restoration of neurological signs.