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Prenatal diagnosis and perinatal aspects of abdominal wall defects.

We retrospectively reviewed 27 cases of omphalocele and 15 cases of gastroschisis occurring among 62, 572 deliveries between 1987 and 1994. All cases had undergone prenatal sonographic examinations at a mean gestational age of 28 weeks. In cases of omphalocele, 59.3% (16/27) of fetuses were associated with multiple malformations and 16% (4/25) had chromosomal abnormalities. Among the 4 cases with an abnormal karyotype, three cases were associated with extracorporeal livers and two cases were associated with umbilical cord cysts. Prenatal ultrasound examinations during the second and third trimesters were able to detect 66.7% (18/27) of the cases of omphalocele and 66.7% (10/15) of the cases of gastroschisis. Failure in correctly diagnosing abdominal wall defects by prenatal ultrasound occurred mostly in cases associated with small defects, ruptured omphalocele, multiple fetal anomalies, intrauterine fetal death, twin pregnancies, or cases referred in late gestation. A comparison of perinatal data between omphalocele and gastroschisis reveals fetuses with omphalocele carry higher risks of associated malformations, chromosomal abnormalities, prematurity, and neonatal death. Although fetuses with gastroschisis have higher incidences of oligohydramnios and small for gestational age, the fetal prognosis after pediatric surgery is good.

Abdominal Muscles↗

A model of port-site metastases of gallbladder cancer: the influence of peritoneal injury and its repair on abdominal wall metastases.

BACKGROUND: Recent surgical literature contains several reports of wound metastases of unexpected gallbladder cancer after laparoscopic cholecystectomy. We hypothesized that peritoneal injury caused by trocar insertion potentiates wound metastases. This study was designed to determine the effect of peritoneal injury on tumor implantation. METHODS: Cultured human gallbladder cancer cells were injected into the peritoneal cavity of mice immediately after surgical procedures. In a peritoneal injury group muscle and the peritoneum were perforated; in a peritoneal injury and repair group each muscle and peritoneal wound was sutured carefully; in a laparoscopic model group animals underwent peritoneal insufflation with carbon dioxide gas and tumor cell injection and then the abdominal wall was perforated. Some mice (controls) were not subjected to any surgical procedure. All mice (n = 178) were killed 2 weeks after tumor cell injection and were examined for tumor implantation. RESULTS: Although no control mice showed intraperitoneal tumor, all mice in the peritoneal injury group showed tumors at the injured sites. In the laparoscopic model group, 90% of injured sites had tumors. The traumatized site-specific implantation rate in the peritoneal injury and repair group was only 40%, whereas it was 100% in the peritoneal injury group (P < .001). CONCLUSIONS: Peritoneal injury enhances peritoneal implantation of carcinoma cells. Repair of injured peritoneum at trocar sites may reduce the frequency of wound metastases in laparoscopic surgery for unexpected gallbladder carcinoma.

Abdominal Muscles↗

Abdominal wall lifting with spinal anesthesia vs pneumoperitoneum with general anesthesia for laparoscopic herniorrhaphy.

BACKGROUND: Laparoscopic herniorrhaphy has generally been very successful since any postoperative inguinal pain or tension is considerably less troublesome than after other open methods. The conventional laparoscopic approach in the treatment of inguinal hernia involves the use of pneumoperitoneum and general anesthesia. Nevertheless, some complications can be encountered and the procedure is costly. We, therefore, examined the possibility of using a more practical and cost efficient method. MATERIALS AND METHODS: Based on our findings, we propose the use of a Kirschner lifting wire as a means of separating the abdominal wall during laparoscopic herniorrhaphy. Two Kirschner wires are introduced through the subcutaneous tissue, between the umbilicus and inguinal ligament, and parallel to the inguinal ligament. Furthermore, we recommend the use of spinal anesthesia as a means by which the problems associated with general anesthesia and the potential cardiopulmonary complications of carbon dioxide insufflation, are circumvented. Fifteen cases of inguinal hernia have been treated with this new method and compared to the more conventional procedure of pneumoperitoneum under general anesthesia. RESULTS: Visibility of the operative field when used in the inguinal region was not limited at all, and Kirschner wire is considerably less expensive. The postoperative course for the patients who were operated by the new method was uneventful. CONCLUSIONS: Our results indicate that this new method can be useful for the treatment of inguinal hernia.

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