名词难看，畸形

1. （尤指天生的）畸形
A malformation in a person's body is a part which does not have the proper shape or form, especially when it has been like this since birth.

e.g. ...babies with a high incidence of congenital malformations.
先天畸形发生率高的婴儿

noun

1. something abnormal or anomalous

Synonym: miscreation

2. an affliction in which some part of the body is misshapen or malformed

Synonym: deformitymisshapenness