This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital malformations, Subject name: Gynaecology & Obstetrics
Diethvlstilbesterol causes the following defects except: 
Select and explain. 
A. Renal anomalies, B. Perifimbrirl cysts, C. T shaped uterus, D. Vaginal adenosis
A: Renal anomalies
Answer: A: Renal anomalies 
Explanation: In addition to its carcinogenic propeies, DES is a known teratogen, an agent capable of causing malformations in daughters and sons who were exposed in utero. DES-exposed daughters are at an increased risk of abnormalities of the reproductive tract, including vaginal epithelial changes such as vaginal adenosis (which means a type of cell normally found in the uterus, columnar cells, are also present in the vagina), an increased cervical transformation zone, and uterine abnormalities, such as T-shaped uterus.