先天性第一鳃裂囊肿发病率很低，新生儿患此病更为罕见，我院于1990年11月成功收治新生儿巨大第一鳃裂囊肿1例，报告如下。患儿男，15天，生后即发现左面顿都有一6cm×6cm大小硬质肿块，迅速增大，到入院时已达15cm×12cm，上至左眼睑下线，前至四角，后至耳后沟，下至颈上1／3 The incidence of congenital first branchial cleft cyst is very low, newborns suffer from the disease is more rare, our hospital in November 1990 successfully admitted to a huge newborn first branchial cleft cyst in 1 case, the report is as follows. Children, male, 15 days after birth that is found on the left have a 6cm × 6cm size of the hard mass, rapidly increasing to the hospital has reached 15cm × 12cm, on the left eyelid off the assembly line, before the four corners, after the ear After the groove, down to the neck 1/3