A 33-year-old woman, gravid 2 para 2, underwent laparoscopic myomectomy with electric tissue morcellation for intraligamental myoma. Six years later, asymptomatic pelvic tumor was found during a routine checkup. Under laparoscopic observation, multiple soft tumors were detected in the peritoneal cavity and these tumors were successfully excised by a laparoscopic-assisted procedure. Pathological examination demonstrated that these tumors were progesterone receptor-positive leiomyomas that were almost identical histologically to the myoma tissue excised 6 years earlier.