Journal of Nippon Medical School: Vol.70 No.2 page.172

Journal of Nippon Medical School

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ArticleTitle Characteristic Prenatal Ultrasonographic Findings of Patent Urachus: A case report

AuthorList Yoshio Shima¹, Mari Hayashida², Takashi Hayashi³, Yoshimitsu Kuwabara³ and Tsutomu Araki³

Affiliation ¹Department of Premature and Neonatal Medicine, Japanese Red Cross Katsushika Maternity Hospital, Tokyo
²Department of Pediatrics, Nippon Medical School
³Department of Obstetrics and Gynecology, Nippon Medical School

Language EN

Volume 70

Issue 2

Year 2003

Page 172-174

Received October 7, 2002

Accepted November 6, 2002

Keywords patent urachus, prenatal diagnosis, ultrasonography

Abstract A characteristic prenatal ultrasonographic finding of patent urachus is described. Routine obstetrical ultrasonography first revealed a cystic mass in the umbilical cord at 16 weeks of gestation. The mass spontaneously decreased in size and was undetectable at full term on serial ultrasound examination. The male newborn infant was delivered uneventfully at 38 weeks of gestation, weighing 2,774 g. He was noted to void urine from the umbilicus soon after birth, and the diagnosis of patent urachus was confirmed. On the 8th day of life, complete surgical removal of the urachus was performed, and the postoperative course was uneventful. An umbilical cystic mass which diminishes in size over the course of pregnancy is a sugesstive prenatal sonographic finding for urachal anomalies.

Correspondence to Yoshio Shima, MD, Department of Premature and Neonatal Medicine, Japanese Red Cross Katsushika Maternity Hospital, 5-11-12 Tateishi, Katsushika-ku, Tokyo 124-0012, Japan
shima-p@nms.ac.jp

ArticleTitle	Characteristic Prenatal Ultrasonographic Findings of Patent Urachus: A case report
AuthorList	Yoshio Shima¹, Mari Hayashida², Takashi Hayashi³, Yoshimitsu Kuwabara³ and Tsutomu Araki³
Affiliation	¹Department of Premature and Neonatal Medicine, Japanese Red Cross Katsushika Maternity Hospital, Tokyo ²Department of Pediatrics, Nippon Medical School ³Department of Obstetrics and Gynecology, Nippon Medical School
Language	EN
Volume	70
Issue	2
Year	2003
Page	172-174
Received	October 7, 2002
Accepted	November 6, 2002
Keywords	patent urachus, prenatal diagnosis, ultrasonography
Abstract	A characteristic prenatal ultrasonographic finding of patent urachus is described. Routine obstetrical ultrasonography first revealed a cystic mass in the umbilical cord at 16 weeks of gestation. The mass spontaneously decreased in size and was undetectable at full term on serial ultrasound examination. The male newborn infant was delivered uneventfully at 38 weeks of gestation, weighing 2,774 g. He was noted to void urine from the umbilicus soon after birth, and the diagnosis of patent urachus was confirmed. On the 8th day of life, complete surgical removal of the urachus was performed, and the postoperative course was uneventful. An umbilical cystic mass which diminishes in size over the course of pregnancy is a sugesstive prenatal sonographic finding for urachal anomalies.
Correspondence to	Yoshio Shima, MD, Department of Premature and Neonatal Medicine, Japanese Red Cross Katsushika Maternity Hospital, 5-11-12 Tateishi, Katsushika-ku, Tokyo 124-0012, Japan shima-p@nms.ac.jp