男,32岁。主诉左上腹膨胀、隐痛2月入院。腹胀以餐后为甚。无其它不适症状。查体:巩膜无黄染,腹平软,左肋缘下触及一包块约3cm×6cm,质中,表面光滑,境界清楚,移动度小,有轻度压痛,肝脾未触及。B超示结肠脾曲占位性肿块;钡灌肠示结肠正常,CT示左上腹巨大肿块来自胰体尾部,为良性实质性肿瘤。实验室检查:肝肾功能正常,血 Male, 32 years old. He complained of swelling and pain in the left upper quadrant and he was admitted to hospital in February. Bloating is especially bad after a meal. No other symptoms. Physical examination: The sclera was yellow-stained, and the abdomen was soft. A mass of about 3 cm × 6 cm was touched under the left costal margin. The mass, the surface was smooth, the realm was clear, and the degree of movement was small. Mild tenderness was not seen in the liver and spleen. B-ultrasound showed colon-swelling masses in the spleen; barium enema showed normal colon, CT showed a huge mass in the left upper quadrant from the pancreatic body tail, a benign solid tumor. Laboratory tests: normal liver and kidney function, blood