Predictors of post-treatment stenosis in cervical esophageal cancer undergoing high-dose radiotherapy

Table 1 Demographic and treatment data (n = 62)

Characteristics		n (%)
Sex	Female:Male	4:58 (6.5:93.5)
Age		Median 66 yr (range 29-86)
Pathology	Squamous cell carcinoma	56 (90.3)
	Adenocarcinoma	2 (3.2)
	Other	4 (6.5)
T stage	T1	14 (22.6)
	T2	6 (9.7)
	T3	30 (48.4)
	T4	12 (19.3)
Regional node metastasis	N0	14 (22.6)
	N+	48 (77.4)
Tumor length		Median 5.0 cm (range 1-14)
Total length of skip lesions		Median 5.0 cm (range 1-20)
Involved circumference	< 100%	40 (64.5)
	100%	22 (35.5)
Stenosis at diagnosis	No	45 (72.6)
	Yes	17 (27.4)
Radiation dose (EQD1.8)		Median 63 Gy (range 45-90)
Concurrent chemotherapy	Yes	60 (96.8)
	No	2 (3.2)
Endoscopic response	CR	39 (62.9)
	< CR	23 (37.1)

EQD1.8: Biologically equivalent dose in 1.8 Gy fractions; CR: Complete response.