Procedure times (mean ± SD; min) (range) 19.7 ± 5.1 12-26
En bloc resection, n (%) 6 (100)
Curative resection, n (%) 3 (50)
Complications
Perforation, n 0
Delayed bleeding, n 0
Pathological tumor-free margin, n (%) 6 (100)
Histopathological depth (m/sm) 0/6
Lymphovascular invasion, n (%) 3/6 (50)
Additional rescue therapy, n (%) 3 (50)
Recurrence rate, n 0
Follow-up (median; month) 4
En bloc resection defined as one-piece resection with no visible residual tumor; Curative resection defined as en bloc resection without positive lateral and vertical margins and lymphovascular involvement; m: mucosal layer; sm: submucosal layer; SD: standard deviation
Table 2: Clinical outcomes of 6 rectal carcinoid tumors in 6 patients treated with endoscopic mucosal resection after circumferential mucosal incision (C-EMR).