Endoscopic stenting for recurrence-related colorectal anastomotic site obstruction: Preliminary experience

Table 1 Baseline demographic and clinical characteristics of patients

Case No.	Gender	Age	Diagnosis (stage)	Differentiation	Initial surgery	Diverting stoma	Level of anastomosis site (cm)	Type of anastomosis (mm)	Interval IS (d)	Interval CF (d)	Adjuvant therapy
1	F	39	Sigmoid colon cancer (IIIB)	MD	Hartmann's operation	Yes	14	EEA (28)	47	340	CTX
2	F	47	Upper rectal cancer (IIIB)	MD	Hartmann's operation	Yes	10	EEA (28)	70	448	CTX
3	M	82	Sigmoid colon cancer (IIIC)	PD	Low anterior resection	No	10	EEA (28)	NA	277	No
4	F	67	Sigmoid colon cancer (IIIC)	MD	Hartmann's operation	Yes	7	EEA (31)	218	488	CTX
5	F	47	Sigmoid colon cancer (IIIC)	MD	Lapaloscopic anterior resection	No	15	EEA (28)	NA	208	CTX

Level of anastomosis: Distance of anastomotic site above the anal verge; Interval IS: Interval from initial surgery to stoma repair; Interval CF: Interval from colonic anastomosis to first stenting; MD: Moderately differentiated; EEA: End-to-end anastomosis using a circular stapler; CTX: Chemotherapy; PD: Poorly differentiated; NA: Not available; F: Female; M: Male.

Table 2 Clinical outcomes of self-expanding metal stents insertions

Case No.	Stent characteristics			AT after stenting	Cause of failure	Need for surgery	Survival (d)		Outcome
	Type	Length (mm)	Diameter (mm)				Event-free	Overall
1	Uncovered	100	24	No	Re-obstruction	Yes	13	34	Surgery performed due to insufficient function, 10 d after the second SEMS insertion. Died of complications 11 d after the surgery
2	Uncovered	120	20	No	NA	No	93	93	Died due to multiple organ failure, with disease progression
3	Uncovered	60	24	No	NA	No	66	66	Died of pneumonia
4	Covered	60	20	No	NA	No	4	4	Died of myocardial infarction
5	Uncovered	60	24	CTX	Re-obstruction	Yes	96	136	Perforation occurred 26 d after the second SEMS insertion. Currently alive

AT: Adjuvant therapy; CTX: Chemotherapy; NA: Not available; SEMS: Self-expanding metal stents.