Home   Chapter Home   Jobs   Conferences   Fellowships   Books



Advertisement

Lung tumor

Benign tumors

Squamous papilloma


Reviewer: Deepali Jain, M.D. (see Reviewers page)
Revised: 8 January 2013, last major update September 2012
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
=========================================================================

● Papillomas are HPV related benign tumors, uncommon in lower bronchial tree
● 3 types: squamous, glandular, mixed (Am J Surg Pathol 1998;22:1328)
● Usually occur in large bronchi, often with associated tracheal or laryngeal lesions
● Often associated with dysplasia, carcinoma in situ or invasive squamous cell carcinoma

Case reports
=========================================================================

● 42 year old woman (Kyobu Geka 2012;65:808)
● 70 year old man with spindle and squamous cell carcinoma arising in peripheral mixed squamous and glandular papilloma (Arch Pathol Lab Med 2011;135:1353)
● 79 year old woman with HPV11 in tumor (Intern Med 1999;38:817)

Micro images
=========================================================================



23 year old nonsmoking woman

Micro description
=========================================================================

● Papillary lesion covered by squamous epithelium; may contain glandular areas (with mucus)

Micro images
=========================================================================



Various images


Pulmonary inverted schneiderian papilloma

Differential diagnosis
=========================================================================

Mucoepidermoid carcinoma: for papillomas with mucus cells

End of Lung tumor > Benign tumors > Squamous papilloma


This information is intended for physicians and related personnel, who understand that medical information is often imperfect, and must be interpreted in the context of a patient's clinical data using reasonable medical judgment. This website should not be used as a substitute for the advice of a licensed physician.

All information on this website is protected by copyright of PathologyOutlines.com, Inc. Information from third parties may also be protected by copyright. Please contact us at copyrightPathOut@gmail.com with any questions (click here for other contact information).