He spends his clinical time managing patients with complex brain tumors, both in the operating room and in the outpatient setting. Tumors from the operating room go to his laboratory for further study. Some of these tumors become established cell lines that can be studied to learn more about how they work and identify new ways to treat some of these deadly diseases. In addition to brain tumors, Dr. Daniels manages and treats general pediatric neurosurgical conditions, including: