A 54-year-old woman was admitted to the author's institution for the evaluation of vague abdominal pain and previously detected ovarian cystic lesion. The patient's physical examination showed no specific signs. Gastro-duodenoscopic examination detected no mass lesion. Laboratory results revealed mild hypercholesterolemia and hyperamylasaemia; otherwise, unremarkable. Axial (Fig. 1A), coronal (Fig. 1B) and sagittal (Fig. 1C) contrast-enhanced computed tomographic (CT) images demonstrated a well-defined hypervascular mass that was 2 cm in size, abutted the left gastric artery (arrowheads in Fig. 1A) and was localised in the gastrohepatic ligament (GHL). This lesion showed intact fat planes between adjacent organs and clear separation from the stomach wall and the pancreas (Fig. 1B, C). At the time of CT reading, the whole abdominopelvic cavity was inspected, and no evidence of an additional mass or lymphadenopathy was found in the gastroenteropancreatic (GEP) region. The radiologic differential diagnoses for solitary masses in the GHL include Castleman disease, malignant metastatic lymphadenopathy, neurogenic tumour, ectopic spleen and neuroendocrine tumour (NET). Based on the imaging findings, a laparo-scopic excision of the lesion was performed for diagnostic and therapeutic purposes. At the time of the laparoscopic surgery, the authors evaluated the whole abdominopelvic cavity, especially focusing on the small bowel loops and stomach. There was no evidence of any other tumours anywhere else. A well demarcated nodule that was 2.0cm in size was observed in the GHL, contacting with the upper distal pancreatic border.
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