Skeletal muscle loss in the postoperative acute phase after esophageal cancer surgery as a new prognostic factor

Table 1 Patients’ characteristics

Characteristic	Number of patients (%) n = 72
Age, y, median (IQR)	66 (43 - 83)
Sex, n (%)
Male	65 (90%)
Female	7 (10%)
ASA, n (%)
1, 2	65 (90%)
≥ 3	7 (10%)
Preoperative sarcopenia^b, n (%)
Sarcopenic	64 (89%)
Nonsarcopenic	8 (11%)
Tumor location, n (%)
Ce	4 (6%)
Ut	13 (18%)
Mt	30 (42%)
Lt	23 (32%)
Ae	2 (3%)
Operative procedure, n (%)
Open esophagectomy	22 (31%)
Thoracoscopic esophagectomy	50 (69%)
Preoperative therapy, n (%)
None	17 (24%)
Chemotherapy	54 (75%)
Chemoradiotherapy	1 (1%)
Postoperative therapy (including adjuvant therapy), n (%)
No	22 (31%)
Yes	50 (69%)
pStage, n (%)
< pStage III	36 (50%)
≥ pStage III	36 (50%)
TPI (cm²/m²), median (IQR)
Preoperative TPI	4.63 (3.74 - 5.77)	P = 0.116^a
Postoperative TPI	4.28 (3.62 - 5.28)	P = 0.116^a

TPI total psoas major muscle mass index, pStage pathological stage (UICC 8th), ASA the American Society of Anesthesia physical status, IQR interquartile range, ^aWilcoxon rank-sum test, ^bAccording to the definition of Prado [22]

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