VACTERL association. Basically, here's an introduction: Once upon a time, there were a bunch of non-random birth defects that were caused by something doctors don't know. Each letter in "VACTERL" association stands for a different thing wrong with you. If you have 3+ then congratulations, you have it.
V-Vertebral Anomalies
A-Anal Atresia
C-Cardiac
T-Trachea
E-Esophogus
R-Renal
L-Limb Anomalies