BACKGROUND: Omental torsion is due to the twisting of the omentum along its axis and is observed in young male patients. The first description of omental torsion was first made by Eitel in 1899.
METHODS: A 35-year-old male presented with right iliac fossa pain, nausea, occasional vomiting and loss of appetite for four days. His clinical and radiological findings were suggestive of acute appendicitis. However, he was diagnosed with greater omental torsion intraoperatively and successfully managed with laparoscopic omentectomy.
CONCLUSIONS: Omental torsion is a rare condition with a low incidence. Preoperative diagnosis of omental torsion continues to be a challenge as the symptoms reported in the literature are usually confused with other abdominal pathologies such as appendicitis or cholecystitis etc. Preoperative US or CT scans are mandatory, and these procedures can accurately accomplish the pre-operative diagnosis. In search for the treatment of choice, laparoscopy proved its effectiveness as a diagnostic tool since it allows for confirming the diagnosis, evaluating the severity of the ischemia, and ruling out other surgical pathologies and therapeutic tools. At the same time, the open surgery approach can be described in many cases as being too invasive.
CONCLUSIONS: Greater omental torsion should be considered a differential diagnosis in all patients with acute abdominal emergencies.

BACKGROUND: Omental wrapping is a common cause for catheter failure in children on peritoneal dialysis (PD). Previous studies are conflicting in the benefits of omentectomy.
METHODS: We conducted a retrospective study comparing children who underwent PD catheter placement by a standardized laparoscopic three-in-one technique (lap3-in-1) from 2013 to 2018 versus a historical control cohort by open surgery without omentectomy. Lap3-in-1technique combined catheter placement with well-defined indication and extent of omentectomy, and closure of any patent processus vaginalis (PPV).
RESULTS: There were 33 and 32 children in the lap3-in-1 and control cohorts respectively. 4/33(12.1%) in lap3-in-1 had reoperations for catheter failures which equated 1 reoperation per 144 catheter months. No reoperations were performed in lap3-in-1 cohort for omental wrapping or inguinal hernia, compared with 13/32 (41%; p < 0.001) and 5/32 (16%; p = 0.02) in the control cohort. Kaplan Meier survival curves showed significantly longer catheter life in the lap3-in-1 cohort (p < 0.001). In multivariate analysis by the COX proportional hazards model, the lap3-in-1 approach had significantly reduced risk of reoperation for catheter failure (HR 0.11; 95% CI: 0.04-0.31; p < 0.001).
CONCLUSIONS: The lap3-in-1 technique is effective in selecting those children who would benefit from omentectomy, and avoiding a second operation for inguinal hernia which develops after PD.
METHODS: Treatment study, level III.

BACKGROUND: Torsion of the greater omentum is unusual. In most cases, the preoperative diagnosis was difficult due to the non-specific clinical presentation.
METHODS: We present a case of greater omental torsion in a 28-year-old man with an untreated right inguinal hernia since childhood. Computed tomography (CT) revealed characteristic signs of omental torsion, which was important in making correct diagnosis. We made correct preoperative diagnosis and performed laparoscopic omentecomy. The greater omentum distal to the twisted part was dark red and showed necrotic change. This case was secondary omental torsion associated with a right inguinal hernia.
CONCLUSIONS: Omental torsion should always be included in the differential diagnosis of acute abdomen.
CONCLUSIONS: CT multi-planar reconstruction (MPR) imaging played a particularly important role in making a precise diagnosis. Laparoscopic approach could be useful in both diagnostic and therapeutic intervention. A successful laparoscopic omentectomy was performed in the present case.