Research Article
Renal Dysfunction is a Risk Factor of Death after Gastric Endoscopic Submucosal Dissection in Elderly Patients Aged ≥80 Years
Table 2
Clinical characteristics of the lesions in the elderly and nonelderly groups.
| | | Elderly group (n = 128) | Nonelderly group (n = 504) | value |
| | Macroscopic type, n (%) | | | | | Elevated | 58 (45.3) | 223 (44.2) | n.s. | | Flat/depressed | 41 (32.0) | 202 (40.1) | n.s. | | Mixed | 29 (22.7) | 79 (15.7) | n.s. | | Location, n (%) | | | | | Upper | 16 (12.5) | 87 (17.3) | n.s. | | Middle | 35 (27.3) | 143 (28.4) | n.s. | | Lower | 77 (60.2) | 274 (54.3) | n.s. | | Histological type, n (%) | | | | | Differentiated | 125 (97.7) | 489 (97.0) | n.s. | | Undifferentiated | 3 (2.3) | 15 (3.0) | n.s. | | Tumor depth, n (%) | | | | | Intramucosa | 114 (89.0) | 456 (90.5) | n.s. | | SM1 | 7 (5.5) | 26 (5.2) | n.s. | | SM2 | 7 (5.5) | 22 (4.3) | n.s. | | Tumor size (mean ± SD), mm | 16.5 ± 10.4 | 16.5 ± 11.8 | n.s. | | Venous invasion, n (%) | 6 (4.7) | 5 (1.0) | <0.05 | | Lymphatic vessel invasion, n (%) | 5 (3.9) | 17 (3.4) | n.s. |
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SD, standard deviation; SM1: depth of submucosal invasion <500 μm; SM2: depth of submucosal invasion ≥500 μm. Chi-square t-test; Fisher’s exact test; Unpaired t-test. |
