Atypical adenomatous hyperplasia of the lung

Atypical adenomatous hyperplasia (AAH) of the lung is a putative precursor lesion of adenocarcinoma of the lung. This entity replaces part of a spectrum of the previous bronchoalveolar carcinoma. It is defined as a peripheral focal proliferation of atypical cuboidal or columnar epithelial cells along the alveoli, alveolar septae and respiratory bronchioles 3,5. There is no significant destruction of alveolar walls 7.

Their radiographic appearances can be somewhat variable but have been commonly described as ground glass nodules 3-5.

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Article information

rID: 22168
System: Chest
Tags: chest, cases
Synonyms or Alternate Spellings:
  • Atypical adenomatous hyperplasia
  • Atypical adenomatous hyperplasia (AAH)
  • Atypical adenomatous hyperplasia (AAH) of the lung
  • AAH
  • AAH lung
  • Atypical adenomatous hyperplasia (lung)

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