최근 가톨릭의대 부설 성모병원 산부인과학교실에서 나소낭종으로 진단되어 개복수술중 요막관기형에 악성종양이 발생된 희귀한 증례를 경험하였기에 간단한 문헌적 고찰과 함께 보고하는 바이다.

Malignant tumor of the urachus is very rare. The urachus develops in early fetal life from the allatois primitive excretory organ. After the second or third month of fetal life, this tubular structure was normaly obliterated and gradually disappeared. But variation of this normal pattens of development makes various urachal anomlies. We experienced a malignant tumor originaed from urachus which was impresed as an ovarian cyst before operation. We present a case of malignant tumor of urachus with a brief review of the concerned literature.