 He was also a professor of Neurosurgery, Oncology, Plastic Surgery, and Pediatrics at the Johns Hopkins School of Medicine.Carson's achievements include performing the only successful separation of conjoined twins joined at the back of the head; performing the first successful neurosurgical procedure on a fetus inside the womb; performing the first completely successful separation of type-2 vertical craniopagus twins; developing new methods to treat brain-stem tumors; and revitalizing hemispherectomy techniques for controlling seizures.He wrote over 100 neurosurgical publications.