Wandering spleen is very rare condition in children characterized by migration of the spleen from its normal position due to laxity or absence of the supporting splenic ligaments. We experienced a case of splenic infarction due to torsion of a wandering spleen in a 6-year-old boy who presented with fever, vomiting, and abdominal pain of 2 day's duration. On physical examination, there was severe tenderness in the left upper quadrant of the abdomen. The plain abdominal radiograph showed marked colonic gaseous distension. Contrast-enhanced abdominal computed tomography scan showed decreased density of spleen in the normal position, consistent with infarction. At emergency laparotomy, a wandering spleen twisted 360° on its pedicle was found. Despite splenic detorsion, blood flow could not be restored. Splenectomy was therefore performed. The child was discharged 7 days after surgery without any complications.

Mature cystic teratoma, commonly called dermoid cyst, is the most common benign germ cell tumor of the ovary in children. Malignant transformation is rare, approximately 2%. As laparoscopic procedures are applied widely in pediatric surgery, a female chlid with a mature cystic teratoma may be an ideal candidate for laparoscopic surgery. Two children received laparoscopic operations successfuly for lower abdominal crises, twisted adnexa. There was no operative complication. Laparoscopic approach for ovarian lesions in infancy and childhood appears to be an effective and safe method for diagnosis as well as definitive therapy.

Two cases of primary torsion of the greater omentum were described. The first patient was a 5-year-old boy who was admitted to the hospital because of severe abdominal pain for 1 day. The The clinical features were similar to perforated acute appendicitis. Laparotomy revealed a normal appendix and the greater omentum twisted around its pedicle. The second patient was a 7-year-old girl admitted to the hospital because of abdominal pain in right lower quadrant for 2 days. The clinical features were that of acute appendicitis. Laparotomy revealed a normal appendix and primary torsion of greater omentum around its pedicle. In both cases, resection of twisted omentum and incidental appendectomy were done. The microscopic findings in two cases consisted of congestion and vascular hemorrhage. Both patients recovered uneventfully. Torsion of the greater omentum, therefore, may be added to the entities to consider in the differential diagnosis of acute appendicitis.

Ovarian cyst is found in 32% of necropsies in neonates, and can be visualized during gestation by ultrasonography. The clinical evolution of these cysts is variable, but in most cases the prognosis is favorable. Ovarian torsion, bleeding, rupture, and peritonitis have been described as complications. We report a newborn girl with torsion of ovarian cyst. A cystic mass measuring 41.9x31.9 mm on left side of abdomen was identified at 32 weeks of gestation by fetal ultrasonography. Surgery was performed after birth.

A 4-year-old female with acute lower abdominal pain was admitted with the diagnosis of periappendiceal abscess made by ultrasonography. At laparotomy, the appendix was normal, but the left ovary was twisted and necrotic. Appendectomy and left salpingo-oophorectomy were performed. The pathology of the appendix was normal, and the left tube and ovary were ischemic and had hemorrhagic necrosis. Pediatric adnexal torsion may be difficult to diagnosis clinically. Sonography is the preferred imaging study. It usually confirms a pelvic mass but may not establish the diagnosis. The correct diagnosis of adnexal torsion is often made at exploration. The most common erroneous diagnosis is acute appendicitis or periappendiceal abscess. Therapy for adnexal torsion remains controversial. While extirpation has been the standard of treatment in the past, there are current proponents of conservative therapy with adnexal sparing. Early diagnosis may lead to more frequent salvage of affected adnexa.

Although intraperitoneal teratomas are rare, teratomas of the greater omentuma are seldom reported. A single case of omental teratoma with torsion in a 26-month-old girl is reported. The patient presented with abdominal pain and a palpable mass. Ultrasonography and CT of the abdomen showed a large cystic mass with a non homgenious solid component composed of fat and calcification. The lesion was surgically excised. Pathology revealed a mature omental teratoma. The hospital course was uneventful.

One case of primary omental torsion in a 10 year-old, 43 kg boy is presented. He presented with a history of acute, continuous pain in the upper abdomen, aggravated by changes of position. Physical examination of his abdomen showed board-like rigidity, tenderness and rebound tenderness over the entire abdomen. The preoperative diagnosis was perforated peptic ulcer. Exploratory laparatomy revealed torsion of the greater omentum. The tor sed omentum was excised and the outcome was good. Omental torsion is a rare surgical condition and is difficult to diagnose prior to operation. Therefore, in case of negative exploration for acute abdomen, the omentum should be included among the organs examined. In addition, careful search for an inflammatory focus should be made, because secondary omental torsion with intraabdominal sepsis is much more common than primary torsion.