B4-056 Restrictive Pulmonary Disease Flashcards
- disorders involving inflammation and fibrosis of the lung parenchyma, particularly the interstitium
- causes reduced diffusion capacity
interstitial lung disease
space between the epithelial and endothelial basement membranes in the alveolar wall
interstitium
fibrosing interstitial lung diseases
just the 3 she said we’re responsible for
- idiopathic pulmonary fibrosis
- non-specific interstitial pneumonia
- pneumoconiosis
insidious onset of dyspnea on exertion
dry cough
hypoxemia, cyanosis, clubbing
inspiratory crackles
idiopathic pulmonary fibrosis
CT findings
- bilateral basilar-predominant reticulation and bronchiectasis
- bilateral subpleural honeycomb cysts
idiopathic pulmonary fibrosis
chronic fibrosing interstitial lung disease with high mortality
idiopathic pulmonary fibrosis
- female
- non-smoker
- dyspnea, cough of several months duration
non specific interstitial pneumonia
- interstitial fibrosis and inflammation
- lung architecture preserved
- no honeycomb/fibroblast foci
non specific interstitial pneumonia
temporal homogenity
non specific interstitial pneumonia
- Patchwork of interstitial fibrosis
- septal distribution
- dense fibrosis/honeycombing
- fibroblast foci
UIP
inflammatory reaction of the lung to inhaled dust/mineral particles
pneumoconiosis
proinflammatory cystalling hydrated silicates
asbestos
pneumoconiosis
golden brown beaded rods with translucent center
ferruginous body
asbestos pneumoconiosis
caused by inhalation of proinflammatory crystalline sillicon dioxide
silicosis
pneumoconiosis
most prevalent occupation disease worldwide
concrete, stone cutting, sand blasting, hard rock mining
silicosis
pneumoconiosis
pneumoconiosis causes activation of
inflammasome
bright crystals under polarized light
silicosis
pneumoconiosis
- alveolar proteinosis
- cholesterol clefts
- eosinophilic globules
acute silicosis
inhaled carbon dust engulfed by alveolar or interstitial macrophages
anthracosis
coal workers pneumoconiosis
coal macules and nodules consisting of carbon laden macrophages and scar
simple coal workers pneumoconiosis
- large scars with dense collagen and black pigment
- progressive massive fibrosis
complicated coal workers pneumoconiosis
granulomatious interstitial lung diseases
2
- sarcoidosis
- hypersensitivity pneumonitis
sarcoidosis
- multi-nucleated giant cells
- epithelioid
- non-necrotizing
- hyalinizing fibrosis
sarcoidosis
- high ACE level
- hypercalcemia
- hypercalciuria
sarcoidosis
from immune reactiong provoked by inhaled antigen in susceptible individuals
hypersensitivity pneumonitis
- increased CD4 and CD8 T lymphocytes
- non-necrotizing granulomas
- antigen specific IgG antibodies
- complement and Ig deposits
hypersensitivity pneumonitis
- insidious onset SOB, cough, weight loss, exercise intolerance
- acute episodes following inhalation of irritant w/ fever, cough, elevated WBC
hypersensitivity pneumonitis
- mosaic perfusion
- BAL fluid >20% lymphocytes
hypersensitivity pneumonitis
interstitial poorly formed non-necrotizing granulomas
hypersensitivity pneumonitis
characterized by proliferation of Langerhans cells
pulmonary langerhans cell histiocytosis