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Ductal Carcinoma-in-situ : Micropapillary

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The papillary structures in this example of micropapillary DCIS show bulbous expansion of their tips. Some of the adjacent papillary fronds have coalesced creating Roman bridge arches. When fusion between adjacent fronds is extensive, it results in formation of cribriform structures. Micropapillary and cribriform patterns of DCIS often coexist.

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