Oncological outcomes of transanal local excision for high risk T1 rectal cancers

Table 1 Clinical characteristics of the study group

Clinical characteristics
Surgical procedure
Transanal local excision alone	12
Immediate reoperation	13
Gender
Male	14
Female	11
Age (yr)
Median	63
Range	43-87
Tumor location (cm)
Median distance from the anal verge	4
Range	2-7
Tumor size (cm)
Median	3
Range	1-5

Table 2 Histopathological characteristics of the patients between two groups

Histopathological characteristics	Group A	Group B
Poorly differentiated	1	6
Poorly differentiated + positive margin	5	2
Positive margin	3	1
Lymphovascular invasion	1	2
Poorly differentiated + lymphovascular invasion	3	1

Group A: Immediate conventional reoperation after transanal local excision; Group B: Transanal local excision alone.

Table 3 Histopathological characteristics of patients with tumor recurrence

Tumor differentiation	Margin status	Lymphovascular invasion	Group	Type of recurrence	Salvage therapy	Follow up (mo)	Remarks
Poor	Negative	Positive	A	Rectum lung	Chemoradiotherapy1	52	Dead
Poor	Positive	Negative	B	Rectum liver	Chemotherapy1	38	Dead
Poor	Positive	Negative	B	Rectum	APR	52	Alive
Poor	Negative	Positive	B	Rectum lung	Chemoradiotherapy1	28	Dead
Moderate	Positive	Negative	B	Rectum	LAR	48	Alive
Moderate	Negative	Positive	B	Rectum liver	Chemotherapy1	35	Dead
Well	Negative	Positive	B	Rectum	Colostomy1	46	Dead

¹Palliative. Group A: Immediate conventional reoperation after transanal local excision; Group B: Transanal local excision alone. APR: Abdominoperineal resection; LAR: Low anterior resection.