Intra-ampullary papillary–tubular neoplasm

Intra-ampullary papillary–tubular neoplasms (IAPN) are precancerous neoplasms of the ampulla of Vater.

[1] On histological examination the neoplasms exhibit both papillary and tubular features.

[1] They are rare; comprising 0.5% of gastrointestinal tumours.

[1] This article about a neoplasm is a stub.

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