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Seven pit patterns of micro-optical coherence tomography images, which are used to establish the diagnostic criteria. (a, b) Representative en face optical coherence tomography images of hyperplastic polpys. (c–f) Representative en face images of adenomas. Blue arrow: small round pit. Green arrow: small asteroid pit. Brown arrow: large asteroid pit. Yellow arrow: oval pit. Red arrow: branched pit. White arrow: cribriform gland.
