Abstract
A 49 years old male had noticed a tumor on the palmar side of the right wrist 25 years ago, however, he did not seek treatment because there was no pain. The patient visited our hospital for the first time on August 25 1998 because the tumor had recently increased. The tumor existed on the palmar side of the right wrist and size was 7×4 cm. The surface of the tumor was smooth and had an elastic hardness. A plain X-ray revealed a calcified spot in the tumor. We removed the tumor on September 28, 1998, the tumor was diagnosed as vascular leiomyoma from the pathological organization. Since treatment no tumor has reappeared and the patient does not suffer any pain. Vascular leiomyoma occurring to the wrist joint, according to a report of Morimoto, etc, account for only 0.8% of cases, in addition, leiomyoma of over 2.0cm account for only 9.1%. A report of leiomyoma over 5 cm such as we experienced is extremely.