Postoperative pain
Patient reports of endoscopic group with ”almost no pain” or ”slight pain” are all patient reports, and all patients do not need painkillers. Among them, 25% of patients who have experienced pain in need of painkillers have undergone microsurgery. 6 hours after operation, the pain was calculated by the numerical rating scale. The average pain score of microscopic examination group was 5.80(4-8) and that of endoscopic group was 3.45(1-6), which was statistically significant (P<0.05, Figure 5A).