Excision of malignant and pre-malignant rectal lesions by transanal endoscopic microsurgery in patients under 50 years of age

Table 1 Patient demographics and clinical variables

Variable	n = 26
Age in yr (range)	43.3 (21-49)
Male/female	45245
BMI (kg/cm2)	26.8 (20-42)
ASA score (%)
I	17 (65.5)
II	6 (23.0.)
III	3 (11.5)
Indication for surgery (%)
Adenoma LGD	7 (27.0)
Adenoma HGD	5 (19.2)
Carcinoma	4 (15.4)
Indeterminate margins after polypectomy	4 (15.4)
Other	6 (23.0)
Tumor diameter, cm (range)	2.39 (1-4)
Distance from anal verge, cm (range)	8.5 (5-13)
Rectal wall location (%)
Posterior	8 (30.8)
Anterior	3 (11.5)
Right lateral	10 (38.5)
Left lateral	5 (19.2)

ASA: American Society of Anesthesiology; LGD: Low-grade dysplasia; HGD: High-grade dysplasia.

Table 2 Operative variables

Variable	n = 24
Operation time, min (range)	67 (46-108)
Hospital stay, d (range)	2 (1-4)
Perioperative complications (%)
Peritoneal entry	0
Bleeding	0
Urinary retention	2 (8.5)

Table 3 Final pathological results of the specimens

Pathology (%)	n = 24
Adenoma LGD	4 (15.4)
Adenoma HGD	7 (26.9)
Carcinoma T1	4(15.4)
Carcinoma T2	2 (7.8)
Carcinoid	3 (11.5)
NED	1 (3.8)
SRU	1(3.8)
Endometriosis	1(3.8)
Tailgut cyst	1 (3.8)
No residual tumor	2 (7.8)

LGD: Low-grade dysplasia; HGD: High-grade dysplasia; NED: Neuroendocrine tumor; SRU: Solitary rectal ulcer.