Papillary adenoma of type 2 pneumocytes

M. Noguchi, T. Kodama, Y. Shimosato, T. Koide, T. Naruke, Gurmukh Singh, S. L. Katyal

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


A case of papillary adenoma of type 2 pneumocytes is reported. A 57-year-old man had an unusual coin lesion in the periphery of the right lung without any symptoms. When detected in a mass survey examination, it was approximately 1.5 cm in diameter, well circumscribed, and located in S4, involving the sixth-order bronchus of B4. Light microscopic examination revealed cuboidal tumor cells arranged in a papillary pattern. Ultrastructurally, the cells had characteristic osmiophilic lamellar bodies. By immunoperoxidase staining, the tumor cells were shown to have intracytoplasmic surfactant apoproteins. The postoperative course was uneventful, and there is no evidence of disease 8 years later.

Original languageEnglish (US)
Pages (from-to)134-139
Number of pages6
JournalAmerican Journal of Surgical Pathology
Issue number2
StatePublished - Jan 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Anatomy
  • Surgery
  • Pathology and Forensic Medicine


Dive into the research topics of 'Papillary adenoma of type 2 pneumocytes'. Together they form a unique fingerprint.

Cite this