| Description | Birth Defect | Fun Facts |
| abnormal remnant of yolk sac on small intestine | |
| accumulation of fluid in skull, large head | |
| aorta and pulmonary trunk on wrong sides of heart | |
| misshapen nails, kneecaps, elbows | |
| multiple little spleens or no spleen at all | |
| defect in lumbar vertebrae leading to protrusion of meninges or spinal cord | |
| fingers or toes attached together | |
| intestines herniate through abdominal wall defect, not covered by membrane | |
| blockage in pyloric sphincter of stomach | |
| extra fingers or toes | |
| absence of sacral, lumbar vertebrae | |
| protrusion of brain or membranes into large cyst on head | |
| abnormal connection between trachea and esophagus | |
| testes fail to descend into scrotum | |
| cystic mass in neck | |
| legs fused together (mermaid syndrome) | |
| narrowed pulmonary trunk from heart | |
| ring-shaped pancreas around the gut | |
| enlarged colon, lack of innervation in distal digestive tract | |
| oddly shaped head and brain | |
| urethral opening on ventral side of penis | |
| narrow, non-existent anus | |
| short bones in digits | |
| aorta and pulmonary trunk not separated | |
| intestines fail to retract after herniation in development, covered by membrane | |
| absence and degeneration of brain and skull | |
| blockage of esophagus | |
| double uterus | |
| various upper limb malformations, heart defects | |
| pulmonary stenosis, ventricular septal defect leading to right ventricle hypertrophy, overriding aorta | |
| heart shaped uterus | |
| small jaw, downward slanting eyes | |
| abnormal openings between lips or roof of mouth | |
| intestines protrude into scrotum | |
| reversed body orientation | |
| reduced or absent limb bones | |
| midline head and facial defect ranging from cleft lip to cyclopia | |
| bone syndactyly, maxillary hypoplasia, craniosynostosis, oral/craniofacial abnormalities | |
| bladder opens externally | |
| rectum, urinary tract, vagina fused | |
| hands and feet missing digits, have median clefts | |