非功能胰岛细胞瘤是一种较少见的疾病[1],缺乏特异性症状和体征,易误诊。我院于1985～1997年收治9例,均误诊,现将其原因分析如下。1　临床资料11　一般资料　男2例,女7例。年龄14～57岁。确诊距首诊时间1.5～4年。9例均有腹部包块,上腹部胀痛或背痛6例(66.7%),食欲减退、?.. Non-functioning islet cell tumor is a rare disease [1], lack of specific symptoms and signs, and is often misdiagnosed. Our hospital was admitted to 9 cases from 1985 to 1997. All of them were misdiagnosed. The reasons are analyzed as follows. 1 Clinical data 11 General information There are 2 males and 7 females. Age 14 to 57 years old. The diagnosis is 1.5 to 4 years from the first consultation. Nine cases had abdominal masses, abdominal pain or back pain in 6 cases (66.7%), loss of appetite,?