Efficacy and Safety Evaluation of Absorbable and Moldable Skull Base Support Plates in Extended Endoscopic Endonasal Transsphenoidal Surgery: A Prospective, Randomized, Controlled Study

Primary objective: To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the incidence of cerebrospinal fluid (CSF) rhinorrhea within 1 month after surgery. Secondary objectives: 1. To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the incidence of intracranial infection within 1 months after surgery; 2. To evaluate the effect of absorbable and moldable skull base support plates used in extended endoscopic endonasal transsphenoidal surgery on the duration of the surgery and length of postoperative hospital stay; 3. To monitor and evaluate the safety of absorbable and moldable skull base support plates, especially the occurrence of nasal complications.