The duration of pituitary tumor surgery is influenced by many factors. For instance, the size of the pituitary tumor and whether the surgical procedure goes smoothly, as well as the presence of important blood vessels and nerves around the pituitary tumor, all affect the length of the surgery. Generally, for typical pituitary tumor patients, the surgery takes about two hours. For patients with larger pituitary tumors, the surgery may last up to three hours or even longer. The patient is given general anesthesia before the surgery and is moved to a recovery room to recuperate for a period afterward, and these times are also included in the duration of the surgery. Therefore, the specific length of the surgery is determined by these factors.