The falciform ligament is a remnant of the embryonic ventral mesentery containing the obliterated umbilical vein and round ligament. It extends from the umbilicus to the superior aspect of the diaphragm. We report about a 53-year-old fit and well patient who presented with acute upper abdominal pain with tenderness to palpation. Ultrasound scan was unremarkable, but blood tests revealed raised inflammatory markers. Thus, computed tomography was performed. This demonstrated acute torsion and fat necrosis of the falciform ligament, which was the aetiology of the upper abdominal pain. Such pathology is rare with 23 previously reported cases. Conservative management is usually proposed, but on occasion, surgical intervention may be warranted in cases that do not respond to initial supportive measures. We describe this case to demonstrate a rare cause of a common presentation to the surgical service.

The falciform ligament attaches the liver to the anterior abdominal wall and diaphragm. Acute falciform ligament related pathology is rare. In this case report we present a case of acute fat necrosis related to the falciform ligament. A 53 year old women presented with acute upper abdominal pain localised to the right hypochondrium. He was tender to palpation in the same region with a positive Murphy’s sign. A provisional diagnosis of acute cholecystitis was made. Blood work revealed raised inflammatory markers but normal liver function tests. Abdominal ultrasound revealed no gallbladder pathology nor gallstones. Thus computed tomogram (CT) scan of the abdomen was performed, showing hyper-attenuation rim signal present within the inferior aspect of the falciform ligament consistent with local vascular occlusion. The patient was managed with intravenous antibiotics with liberal analgesia and went on to make a successful recovery. Only 10 cases have been reported in the literature related to falciform ligament necrosis. We present this unusual pathology encountered on our acute surgical take, to alert surgeons to this rare diagnosis and provide a review of the literature and provide detail of how such a pathology manifests on CT scan.