Ai zheng = Aizheng = Chinese journal of cancer · 2008
[Spread of rectal cancer in the distal mesorectum: a report of 46 cases].
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Zhang Wei-Jian, Chen Jin-Pei
Аннотация
BACKGROUND & OBJECTIVE: Total mesorectum excision (TME) for rectal cancer may reduce local recurrence by complete eradication of metastatic foci in the distal mesorectum. While the spread regulation of rectal cancer in the distal mesorectum and ideal length of mesorectum resection are still unclear. This study was to investigate the spread of rectal cancer in the distal mesorectum.
METHODS: The whole-mount section with HE staining was used to detect tumor spread in the mesorectum of 46 rectal cancer patients. The correlation of tumor spread to clinicopathologic parameters was analyzed by Logistic regression.
RESULTS: The occurrence rate of distal mural invasion of rectal cancer was 10.9% with the maximal distance of 1.5 cmû that of distal mesorectum spread was 21.7% with the maximal distance of 4.0 cm, which included metastasis in lymph nodes, solitary tumor foci, vessel and perineural invasion. Multivariate analysis showed that TNM stage was the only significant factor influencing distal spread of rectal cancer.
CONCLUSIONS: Spread of rectal cancer in the distal mesorectum is common. Resecting at least 5 cm of the mesorectum distal to rectal cancer is recommended.
METHODS: The whole-mount section with HE staining was used to detect tumor spread in the mesorectum of 46 rectal cancer patients. The correlation of tumor spread to clinicopathologic parameters was analyzed by Logistic regression.
RESULTS: The occurrence rate of distal mural invasion of rectal cancer was 10.9% with the maximal distance of 1.5 cmû that of distal mesorectum spread was 21.7% with the maximal distance of 4.0 cm, which included metastasis in lymph nodes, solitary tumor foci, vessel and perineural invasion. Multivariate analysis showed that TNM stage was the only significant factor influencing distal spread of rectal cancer.
CONCLUSIONS: Spread of rectal cancer in the distal mesorectum is common. Resecting at least 5 cm of the mesorectum distal to rectal cancer is recommended.