Table 1 Study data.

From: Trans-oral trans-sheath forceps biopsy for patients with severe esophageal obstruction under fluoroscopy

Date

Value (range or %)

Total patients

35

Mean age, years (range)

74.3 ± 5.6 (63–85)

Sex (male/female)

20/15

Location (upper/middle/lower)

9/18/8

Stenosis length (mm)

48.7 ± 14.5 (21–80)

Maximum tumor diameter (mm)

22.3 ± 5.4 (13–37)

Stooler score (III/IV)

16/19

Previous treatment (%)

No

19 (28.6)

Stenting

8 (22.9)

Irradiation

7 (20)

Chemotherapy

4 (11.4)

The reasons for forceps biopsies

Poor conditions

26 (74.2)

Refusal of endoscopy

7 (20)

Anesthesia problems

2 (5.8)

Mean number of biopsies (range)

5.2 (2–8)

Mean procedure duration (min)

21.9 ± 4.5 (15–32)

Mean irradiation dose

7.2 mSv (2.4–11.9)

Balloon dilatation assistance (N/balloon diameter, mm)

7/8

Karnofsky score

Before

51.1 ± 7.6 (40–60)

After

63.1 ± 9.0 (40–80)

Technical success rate (%)

100

Sensitivity (%)

92.3 (24/26)

Specificity (%)

77.8 (7/9)

Accuracy (%)

88.6 (31/35)

Minor bleeding (%)

2

Final pathology

Esophageal carcinoma

28

Granulation tissue

7