What Are Common Causes for a Lump in the Upper Abdomen?

There are several common explanations for a lump in the upper abdomen. One possibility is a benign cyst, which is a fluid-filled sac that may form in one of the abdominal organs. Additionally, a complex cystic mass can develop in the left upper quadrant, possibly originating from organs such as the pancreas or liver. Enlarged organs, such as splenomegaly may also be felt as a lump in the upper abdomen. In rare cases, an aortic aneurysm may present as a pulsatile lump in the upper abdomen. In some cases, lumps are found during routine physical examinations using techniques like inspection, palpation, and percussion, which help doctors determine the characteristics of the mass. Because the cause of the lump can vary widely—from benign to potentially serious conditions—your doctor may recommend further imaging studies like ultrasound or CT scanning to pinpoint the source and nature of the lump and decide on the best course of treatment.