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AdenoCA of Colon : Vascular Invasion

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Extramural venous invasion is an adverse prognostic factor. Use of elastic stains may be necessary to improve detection of this feature. It is present in approximately 25% of colectomy specimens. The relationship between lymphatic invasion and prognosis is unclear. Image courtesy of: Jian-Hua Qiao, MD, Los Angeles, California, USA. Used with permission.

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