Evidence map›Paper›PMID 6829707›Full record

ArticleThe American journal of pathology1983

Hypersensitivity pneumonitis in man. Light- and electron-microscopic studies of 18 lung biopsies.

O Kawanami, F Basset, R Barrios, J G Lacronique, V J Ferrans, R G Crystal

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In one paragraph

Article in The American journal of pathology, 1983. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
9.7field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 152 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Small airways diseases, excluding asthma and COPD: an overview.European respiratory review : an official journal of the European Respiratory Society · 2013
    Article
  5. An unusual case of pneumonia.Internal and emergency medicine · 2008
    Article
  6. Hypersensitivity pneumonitis.Orphanet journal of rare diseases · 2006
    Review
  7. Article
  8. Type III hypersensitivity reaction in mushroom growers.The Korean journal of internal medicine · 1991
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Intraluminal fibrosis in interstitial lung disorders.The American journal of pathology · 1986
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

O Kawanami
F Basset
R Barrios
J G Lacronique
V J Ferrans
R G Crystal
National Institutes of Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Light- and electron-microscopic changes produced by hypersensitivity pneumonitis were analyzed in open lung biopsies taken from 18 patients with chronic forms of the disease. The main changes observed were: alveolitis (both luminal and mural), granulomas, intraalveolar buds, and interstitial fibrosis. The cells infiltrating the alveolar walls were mainly lymphocytes. Occasionally these lymphocytes presented irregularities in the contours of the nuclear membranes and resembled Sézary cells. In one patient, a few lymphocytes were found that resembled "hand-mirror" cells. Intraalveolar macrophages often had a foamy appearance. Granulomas, present in two-thirds of the patients, differed in several respects from those in sarcoidosis: they were smaller, more loosely arranged, and poorly limited; they had a higher content of lymphocytes; and they were located more frequently in alveolar tissue than in the vicinity of bronchioles and vessels. Intraalveolar buds, also present in about two thirds of the patients, were composed mainly of fibroblasts, myofibroblasts, and macrophages in a loose connective tissue that was rich in proteoglycan material. Capillaries and epithelial cells were rarely seen in buds. Alveolar buds appear to develop by a process of disruption of the epithelial lining layer, due to alveolitis, followed by intraalveolar exudation and by subsequent intraalveolar migration of connective tissue cells interacting with macrophages. Severe fibrotic and alveolar epithelial changes were observed in four patients; milder changes were frequent in most other patients. It is concluded that hypersensitivity pneumonitis usually has distinctive morphologic features; these may help to distinguish the resultant pulmonary fibrosis from that due to other causes.

Indexed as

AdultAlveolitis, Extrinsic AllergicBiopsyFemaleGranuloma, Giant CellHumansLungMalePulmonary Fibrosis

Identifiers

PMID6829707
PMCPMC1916173
OpenAlexW1484285503

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.