Lymphangioma of the thigh following acute trauma

Only 2 cases of lymphangioma of traumatic origin have been previously reported, and in both it was a matter of repeated microtraumas. This is a report of a circumscribed lymphangioma in a 22-year-old man after a severe direct trauma of the thigh. Five months after the trauma a painless, slowly growing mass appeared in this area. Histologically, the removed mass appeared to be a combination of cavernous and cystic lymphangioma. The development of this lesion, which must be considered a hamartoma, may possibly be attributable to a traumatic hematoma and to subsequent reactive fibrosis which may have blocked the lymph drainage possibly from a sequestrated portion of the primitive lymphatic anlage.