This is a 22 year old patient in her 20th week of pregnancy.
The below images and abnormalities are of the same foetus.
Pic #1. Ultrasound scan showed presence of brain tissue without the presence of a calvarium. The brain tissue appeared disorganized.
Pic #2. There is also a mass seen herniating from the anterior wall of the fetal abdomen into the base of the umbilical cord.
Pic #3. Notice separation of the lateral pedicles in this coronal image of the foetal spine. Location of this defect is at the thoracic level.