papilloma

To report two cases of rare primary lacrimal sac tumor-one of inverted papilloma and the other of hemangiopericytoma.

提出两上皮性和非上皮性泪囊肿瘤报告。

A small benign intraductal papilloma appears here in a breast duct, typically in one of the main lactiferous ducts beneath the areola.

图示乳腺导管中小良性导管内乳头状瘤，代表性地出现于乳晕下一个主要输乳管内。