Table 1 Clinical characteristics of patients and pathological characteristics of lesions.
From: Esophageal metal stent for malignant obstruction after prior radiotherapy
Low radial force group 51 cases in 45 patients | High radial force group 56 cases in 54 patients | P value | |
|---|---|---|---|
Age | 68 (32–87) | 66 (43–91) | 0.686 |
Sex | |||
Male | 31 (68.9) | 48 (88.9) | 0.022 |
Female | 14 (31.1) | 6 (11.1) | |
Tumor location | |||
Ce | 0 | 1 (1.9) | 0.341 |
Ut | 9 (20.0) | 4 (7.4) | |
Mt | 12 (26.7) | 18 (33.3) | |
Lt | 11 (24.4) | 19 (35.2) | |
Ae | 11 (24.4) | 10 (18.5) | |
Anastomosis | 2 (4.4) | 2 (3.7) | |
Macroscopic type | |||
Type 1 | 7 (15.6) | 3 (5.6) | 0.296 |
Type 2 | 11 (24.4) | 13 (24.1) | |
Type 3 | 13 (28.9) | 23 (42.6) | |
Type 4 | 14 (31.1) | 14 (25.9) | |
Type 5 | 0 | 1 (1.9) | |
Histological type | |||
Squamous cell carcinoma | 31 | 43 | 0.333 |
Adenocarcinoma | 11 | 10 | |
Unknown | 3 | 1 | |
Secondary cancer | |||
Lung cancer | 1 (2.2) | 0 | 1 |
Breast cancer | 1 (2.2) | 0 | |
Prior RT | |||
Yes | 13 (25.5) | 11 (19.6) | 0.495 |
No | 38 (74.5) | 45 (80.4) | |
Degree of stenosisa | |||
Possible | 48 (94.1) | 47 (83.9) | 0.128 |
Impossible | 3 (5.9) | 9 (16.1) | |
Stenosis length, cm | 3 (1–13) | 5 (2–15) | 0.001 |
Stent length, cm | 10 (8–15) | 10 (7–15) | 0.015 |
Follow-up period, month | 3 (1–12.0) | 2 (0.5*–12.5) | 0.237 |
