Wang J, et al. - The reasons and prognosis of URTOR were explored to help improve neurosurgical service quality. Researchers comprehensively analyzed the medical records of URTOR within 30 days of initial surgery at a single neurosurgical center for a period of three years. They realized rebleeding and swelling of the brain as the main reasons for URTOR after neurosurgery. In this study, morbidity or mortality were not identified to be related to the number of URTORs and time from primary craniotomy to URTOR. However, the rate of URTOR seemed influenced by the seniority of the surgeon: surgeons with rich experience in surgery may reduce the chance of a second craniotomy and increase the chance of a good prognosis.