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Pathologe. 2013 Jul;34(4):338-42. doi: 10.1007/s00292-012-1725-2.

[Glandular papilloma of the right main bronchus. Detection of an exon 2 mutation of the KRAS gene (c.35G>A)].

[Article in German]

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Institut für Pathologie und Neuropathologie, Universitätsklinik Essen, Universität Duisburg-Essen, Hufelandstrasse 55, Essen, Germany.


Benign epithelial tumors of the tracheobronchial system and the lungs are exceedingly rare. These entities encompass squamous and glandular papillomas (as well as their mixed forms) and adenomas (alveolar adenoma, papillary adenoma, salivary gland-like pleomorphic and mucinous adenomas and mucinous cystadenomas). These tumors are considered to be biologically benign neoplasms; however, they can pose considerable diagnostic difficulties, especially during frozen section evaluation, as they can mimic malignant tumors and in particular they can resemble well differentiated papillary adenocarcinomas. As a result of the extreme rarity of these tumors only a few descriptive diagnostic series exist and a systematic investigation including molecular data does not exist. This article presents the case of a 64-year-old patient with a glandular papilloma of the right main bronchus including the immunohistochemical and molecular work-up as well as a review of the current literature.

[Indexed for MEDLINE]

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