Ruptured caudate lobe hepatocellular carcinoma presents with lesser sac tumor.

The lesser sac is located anterior to the pancreas and immediately posterior to the body of the stomach (1-3). Caudate lobe liver and splenic artery are also the parts of the lesser sac (4). A fluid collection in the lesser sac in not a typical manifestation of benign ascites, and its presence should direct a search for a pathologic condition in neighboring organs (5). We present a 38year-old male complained of abdominal pain for one week. Contrast enhanced CT of abdomen demonstrated one heterogeneous enhancement 7.5 cm mass with central necrosis in the caudate lobe liver, and hematoma over lesser sac were found.