02a: Interstitial Lung Disease Flashcards
T/F: Most ILDs are of unknown cause.
True
List four key clinical features of ILDs.
- Dyspnea
- Tachycardia
- Cyanosis
- Crackles
T/F: Pulmonary HT and CHF are common clinical consequences of ILDs.
True
Often the first pulm function test to be abnormal in ILDs is (increase/decrease/not change) in (X).
Decrease;
DLCO
You would expect lung compliance to (increase/decrease/not change) in ILDs since elastic recoil is (increased/decreased/not changed).
Decrease;
Increased
Regardless of cause, the earliest common manifestation of most ILDs is:
Alveolitis (accumulation of inflammatory/immune effector cells within alveolar walls/spaces)
IPF (Idiopathic Pulm Fibrosis) will show (X) histology pattern. Briefly describe what you would see.
X = UIP (usual interstitial pneumonia)
- Predominantly fibrosis along interlobular septa (esp subpleural and lower lobes)
- Temporal heterogeneity
Temporal heterogeneity: areas of ongoing fibrosis, aka (X), can be seen near areas of (Y).
X = fibroplastic foci Y = normal lung or established fibrosis
T/F: Fibrosis/tissue damage in IPF (Idiopathic Pulm Fibrosis) is a result of inflammation.
False! Doesn’t respond to anti-inflammatory drugs
Result of “wound-healing” due to unidentified agent
T/F: IPF can eventually lead to bronchiectasis, metaplasia, and smooth muscle hyperplasia.
True
NSIP (Non-specific Interstitial Pneumonia) clinical course differs from UIP in which way(s)?
- Responds to steroids
2. Much better prognosis
(NSIP/UIP) tends to occur in younger patients.
NSIP
T/F: “Ground glass” opacifications/honeycombing is seen in UIP, but not NSIP.
False
T/F: NSIP will present histologically similar to infectious pneumonia.
False (not evenly distributed)
The least specific pattern of lung injury is (X). When no etiology is identified the term (Y) is applied.
X = Organizing Pneumonia (OP) Y = Cryptogenic Organizing Pneumonia (COP)
T/F: Cryptogenic Organizing Pneumonia (COP) and Desquamative Interstitial Pneumonia (DIP) respond super well to steroid therapy.
True
(UIP/NSIP/COP/DIP) has a clear association with smoking and is characterized by large collections of (X) cells in airspaces.
DIP (Desquamative Interstitial Pneumonia)
X = (“smoker’s”) macrophages (filled with brown pigment)
T/F: DIP is minimally (if at all) associated with fibrosis.
True
T/F: Fibrosis is prominent feature of COP.
False
DIP: Alveolar walls may be thickened due to:
WBCs (lymphocytes, plasma cells, eosinophils)