This essay discusses a number of aspects of the neurosurgical problems that
occur as a child progresses into adulthood. Some typical disorders may not
present until a patient reaches adulthood ("pediatric" brain tumors, hydro
cephalus, Arnold-Chiari malformation). The neurosurgeon will be confronted
with disorders of maturation - children who are prematurely adult and adult
s who remain childlike. A variety of neurological disorders may present wit
h these disorders of maturation; and they are discussed. Finally, the neuro
surgeon must be prepared to follow-through for adults who have been treated
for neurological problems when they were children. These include patients
with shunts for hydrocephalus, patients with spinal deformities, and patien
ts with secondary effects of adjunctive therapy.