Hypothenar Lipoma Presenting With Ulnar Neuropathy: A Rare Case and Review of Surgical Management

Lipomas of the hand are rare, particularly in the hypothenar region. We present a case of a 43-year-old male patient with a slow-growing, painless mass in the right hypothenar area causing intermittent tingling and paresthesia in the ulnar nerve distribution. Magnetic resonance imaging (MRI) confirmed a lipomatous lesion. Surgical excision revealed the mass adherent to the superficial branch of the ulnar nerve. Histopathology confirmed a benign lipoma. The patient experienced complete sensory recovery six months postoperatively, with no recurrence. This report discusses the importance of early diagnosis and nerve-sparing excision in hypothenar lipomas.