Hegarty D J, Hopper C, Speight P M
Joint Department of Maxillofacial Surgery, Eastman Dental Institute, London, England.
J Oral Pathol Med. 1994 Aug;23(7):334-6. doi: 10.1111/j.1600-0714.1994.tb00071.x.
Inverted ductal papillomas are rare tumours of minor salivary glands. A case is reported on the lower lip of a 50-year-old man. The tumour showed a characteristic endophytic growth pattern and was composed of bulbous papillary projections of basaloid cells dilating and filling the superficial portion of the excretory duct. Histologically, inverted ductal papillomas resemble the inverted papilloma of the nose and paranasal sinuses, but are completely benign and are not associated with malignant change.
内翻性导管乳头状瘤是小唾液腺的罕见肿瘤。本文报道了一例发生在一名50岁男性下唇的病例。肿瘤呈现出特征性的内生性生长模式,由基底样细胞的球茎状乳头样突起组成,这些突起扩张并充满排泄导管的浅表部分。组织学上,内翻性导管乳头状瘤类似于鼻和鼻窦的内翻性乳头状瘤,但完全为良性,不伴有恶变。