A large meconium pseudocyst that developed into the generalized type during the antepartum period.
A fetal intraabdominal cystic mass, measuring 6 cm, was detected at 30 weeks of gestation in a 27-year-old gravida 2 para 1 woman. At 33 weeks of gestation, the cyst disappeared. Ultrasonography showed fetal bowel dilatation, polyhydramnios, and intraabdominal calcifications. Fetal meconium peritonitis was diagnosed prenatally. Because the fetal ileus became worse, a cesarean section was performed at 35 weeks of gestation; a female infant weighing 2,131 g with an Apgar score of 8 was delivered. Six hours after birth, the neonate received an ileostomy. The bowel was reanastomosed 42 days after the initial operation. On postoperative pathology, a meconium pseudocyst was diagnosed. To our knowledge, this is the first report of a large fetal meconium pseudocyst that developed into the generalized type in the uterus during the preterm antepartum period.
Department of Obstetrics and Gynecology, Tokyo Women's Medical University Yachiyo Medical Center, 477-96 Owada-Shinden, Yachiyo, Chiba, 276-8524, Japan. nakaj613@abeam.ocn.ne.jp.
Yoshiyuki
Y
Nakajima
Department of Obstetrics and Gynecology, Tokyo Women's Medical University Yachiyo Medical Center, 477-96 Owada-Shinden, Yachiyo, Chiba, 276-8524, Japan.
Naoki
N
Masaoka
Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
Aki
A
Asanuma
Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
Kimie
K
Sone
Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
Masaji
M
Nagaishi
Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
Yasuji
Y
Miyakawa
Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan.
Tatsuo
T
Yamamoto
Division of Pediatric Surgery, Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
Mayumi
M
Hoshino
Division of Pediatric Surgery, Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
Tsugumichi
T
Koshinaga
Fetal ultrasonography; Intrauterine ultrasonography; Meconium peritonitis; Meconium pseudocyst