A CASE OF DISSEMINATED METASTASIS DERIVED FROM A MATURE TERATOMA

Abstract

A 24-year-old female, who underwent a surgical resection for a ruptured ovarian teratoma 7 years ago, suffered from right back pain and consulted our hospital requesting further examination of liver tumors pointed out by abdominal CT. The level of all tumor markers examined was within normal limits. CT and MRI findings demonstrated cystic tumors with calcified wall and fat contents. Angiography showed only compressed finding. She was suggested as having disseminated tumors derived from an ovarian teratoma. On laparotomy, the tumors on the liver surface which compressed the liver, were excised. All of these tumors were diagnosed as mature teratomas histologically. This case is of interest in that disseminated tumors of an ovarian mature teratoma were composed of well-differentiated derivatives of three germ layers.