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Dropped omental fat post laparoscopy‐assisted distal gastrectomy with omentectomy mistaken for malignant peritoneal seeding on sonography

We report the sonographic findings in a case of dropped omental fat post laparoscopy‐assisted distal gastrectomy with omentectomy for stomach cancer mistaken for malignant intraperitoneal seeding. Gray‐scale sonography revealed an ovoid‐shaped hyperechoic mass with central poorly defined hypoechoic portion in the right perihepatic space. Color Doppler sonography showed no blood flow within the mass. Contrast‐enhanced CT scan of the liver revealed an oval‐shaped fatty mass with a CT number of −100 HU. © 2013 Wiley Periodicals, Inc. J Clin Ultrasound 42:305–307, 2014