Ampulla of Vater: Difference between revisions

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====Other====
====Other====
Features - any of the following characteristics:<ref name=pmid23026934/>
Features - any of the following characteristics:<ref name=pmid23026934/>
*Non-tubular morphology.
*Non-tubular morphology/poorly-differentiated.
*Micropapillary architecture.
*Micropapillary architecture.
*Medullary.
*Signet ring cells.
*Signet ring cells.
*Mucin:
*Mucin: