联体双胎畸形非常罕见,其发生率约为1/5万,其种类虽繁多,但1头8肢畸形尚未见报道,我院1975年发现1例报道如下。产妇周××,1975年6月12日产下1畸形胎儿,为足月难产,足先露,娩出即死,胎儿身长40厘米, Synatal twins deformity is very rare, the incidence rate of about 1/5 million, although its variety, but a 8 limb deformity has not been reported, found in our hospital in 1975 reported as follows. Maternal week × ×, June 12, 1975 gave birth to a malformed fetus, full-term dystocia, enough to show off, the baby is dead, the fetus is 40 cm in length,