Endoscopic submucosal dissection in early gastric cancer in elderly patients and comorbid conditions

Table 1 Endoscopic submucosal dissection in elderly patient n (%)

Ref.	Age(yr)	Patients n, lesions n	En-bloc resection,with R0, %	Perforation	Late bleeding	Pneumonia
Hirasaki et al[53]	≥ 75	53, 53	96, 81	1 (1.9)	(43%)1	NE
Kakushima et al[14]	≥ 75	42, 49	NE, 96	1 (2)	3 (7)	NE
Akasaka et al[15]	≥ 75	459, 459	NE	20 (4.4)	12 (2.6)	15 (3.3)
Toyokawa et al[54]	≥ 75	200, 229	92, 80	4 (1.7)	22 (9.6)	2 (0.87)
Abe et al[55]	≥ 80	440, 470	NE, 77.9	12 (2.8)	14 (3.2)	NE
Park et al[17]	≥ 70	132, 132	NE	6 (4.5)	5 (3.8)	6 (4.5)
Zhang et al[56]	≥ 75	171, 187	98, 94.1		(15.2%)2	NE

¹Bleeding was defined in cases that required endoscopic management with methods such as clip placement and/or monopolar electrocoagulation to stop the bleeding, including early and late bleeding. One patient required surgery to treat the bleeding;

²Immediate bleeding. NE: Not evaluated.