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In the gynecological literature, a limited number of studies have reported intraperitoneal bleeding due to abdominal blunt trauma. In this report, we describe a rare case of massive intraabdominal hemorrhage from the uterine artery triggered by a fall injury without apparent abdominal bruising in the presence of severe endometriosis and a uterine fibroid. A 28-year-old woman who fell from a railway platform was transported to an emergency hospital. Although she did not sustain abdominal bruising and initially had no abdominal symptoms, she complained of gradually worsening abdominal pain. Abdominal CT identified intraabdominal massive hematoma, and emergency exploratory laparoscopy revealed active bleeding from the right uterine artery eroded by endometriosis, which was treated with laparoscopic electrocoagulation. The cause of the intraabdominal bleeding was associated with avulsion of the endometriosis adhesion between the right perimetrium and the right uterine artery due to inertial forces of the uterus during the fall injury. A uterine fibroid discovered during laparoscopy was suspected to strengthen the inertial forces of the uterus. In the case of hemoperitoneum after trauma, gynecological sources of bleeding must be kept in mind, especially for patients with a known history of fibroids or endometriosis.

Somatostatin-producing tumors are a rare type of neuroendocrine tumor. Their effects on blood glucose levels have been variously reported, and detailed reports have been scarce.The aim of this study was to identify the reasons for the extraordinary blood glucose fluctuations in a case with no previous history of diabetes.A 68-yr-old nondiabetic woman with an ovarian tumor was suffering from hyper- and hypoglycemia. Based on the results of an oral glucose tolerance test and continuous glucose monitoring, we speculated that the fluctuating blood glucose level was accompanied not only by a low insulin level but also by low counter-regulatory hormones levels, and that those broad hormonal suppressions were caused by a high somatostatin level produced in the ovarian tumor. We performed an oophorectomy and assessed the pathology of the tumor and changes in the blood glucose profile as well as hormonal levels postoperatively.The blood glucose level was completely normalized after the oophorectomy. Insulin secretion was also normalized. Histological examination showed that the tumor comprised a mature cystic teratoma and a stromal carcinoid. Immunohistochemically, the stromal carcinoid component was positive for somatostatin. The somatostatin level was 8505 pmol/liter preoperatively, which dropped down to 71.5 pmol/liter postoperatively. We found two previous reports of somatostatin-producing ovarian neuroendocrine tumors. Somatostatin levels among cases of ovarian origin were much higher than those among cases of gastrointestinal origins, and cases of ovarian origin all experienced blood glucose fluctuations.Extremely high somatostatin levels and blood glucose fluctuations may be characteristics of somatostatin-producing ovarian neuroendocrine tumors.