胰岛素瘤(即胰岛β细胞瘤)是少见的肿瘤.其家族聚集现象更属罕见,国内尚未见报道.现将我室于近三年中所遇二例报告如下.临床资料例一,29岁,部队干部,例二,27岁,农民,二人为胞兄弟,均于23岁时在晨起、饥饿、劳累或情绪激动后突发面色苍白、出汗、心悸及震颤,时有 Insulinoma (ie, islet β-cell neoplasia) is a rare tumor. Its family clustering phenomenon is even more rare and has not been reported in China. Two cases reported in our hospital in the past three years have been reported as follows. Clinical data Example 29, 29 years old The officers and cadres of the army, example two, 27 years old, farmer, and two brothers, both suddenly appeared pale, sweating, palpitations, and tremors at the age of 23 when they were up in the morning, hungry, tired or emotional.