Background: Omental torsion is an extremely rare condition in which a pedicle of the omental apron is twisted on its own axis, conditioning vascular compromise and necrosis, and can generate peritoneal irritation that simulates the main causes of acute surgical abdomen. We present the case of a 63-year-old male who underwent surgery under the diagnosis of acute cholecystitis, showing during diagnostic laparoscopy that it was an omental torsion apparently secondary to acute cholecystitis, which was resolved laparoscopically. Knowledge of this pathology is important for the general surgeon because it mimics the most common causes of acute abdomen, so a systematic inspection of the omentum in diagnostic laparoscopy is essential and should never be overlooked. Keywords: Omental torsion, omentum, acute cholecystitis.
