摘要
Compression of the ulnar nerve in Guyon’s canal leads to Guyon’s canal syndrome.Lipoma is a rare cause of such compressions with only 12 cases reported previously.We report a 55-year-old man who presented with swelling in the left hand with decreased sensation in the ring and littlefingers.Magnetic resonance imaging revealed high signals in T1-weighted and T2-weighted images with suppression of the short T1 inversion recovery signal,suggestive of lipoma.On exploration a well-encapsulated,dumbbell-shaped,fatty tumor was seen in the hypothenar space and Guyon’s canal.The tumor was enucleated in toto.At 6-month follow-up,the patient had fully regained sensation.A review of the literature is presented for similar cases where a lipoma was the cause of Guyon’s canal syndrome.
