[Flat, depressed and polypoid colorectal lesions: a comparative study using a index of histological advance].


BACKGROUND It has been described that the histological changes in flat and depressed colon lesions are more advanced than the ones in polypoid lesions. OBJECTIVES To compare the histological findings in flat or depressed (non polypoid) and elevated (polypoid) colon lesions. To validate the use of a newly developed Histological Advance Index to compare… (More)


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