Another congenital disorder is that of caudal regression syndrome also known as "sacral agenesis". A partner condition is testicular or gonadal agenesis. Depending on the type of sacral agenesis, bowel or urinary bladder deficiencies may be present. Eck was born with a truncated torso due to sacral agenesis. Penile agenesis can be caused by testicular agenesis. As children with cerebellar agenesis get older, their movements usually improve. Males with penile agenesis but normal testes are of otherwise normal male appearance. Adults with unilateral renal agenesis have considerably higher chances of hypertension (high blood pressure). The trick involved a woman with sacral agenesis and a contortionist. It is the female counterpart of penile agenesis and testicular agenesis. Aside from the sacral agenesis, Eck was healthy. In testicular agenesis, this process fails. MSX1 is less likely to cause anterior agenesis. In some cases, such as isolated vaginal agenesis, the external genitalia may appear normal. The absence of a vagina is a result of vaginal agenesis.