Lung tumor
Carcinoid and related tumors

Author: Deepali Jain, M.D. (see Authors page)

Revised: 28 December 2016, last major update September 2012

Copyright: (c) 2003-2016,, Inc.

PubMed Search: tumorlet lung
Cite this page: Tumorlet. website. Accessed October 22nd, 2018.
Definition / general
  • Nodular proliferation of small spindle cells near bronchioles
  • May be associated with bronchiectasis or other causes of scarring
  • Almost always benign
  • By definition, 5 mm or less
Positive stains
  • Same as carcinoid
Electron microscopy description
  • Same as carcinoid