NBME 15 Increased fibrosis in the interstitium (NBME Answers)

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Retired NBME 15 Answers

nbme15/Block 2/Question#15 (reveal difficulty score)
A 64-year-old man comes to the physician ...
Increased fibrosis in the interstitium 🔍 / 📺 / 🌳 / 📖
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submitted by ∗ergogenic22(401)

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TLC decreased suggests restrictive disease. Reticular pattern suggests pulmonary fibrosis

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cheesetouch fa2018 p657 +

whk123 So after seeing clubbing of fingers we have two D/D's in our mind 1)Bronchiectasis (a type of COPD in which TLC increases your lungs expand due to obstruction air can't go out from lungs so air keeps on expanding lungs) 2)Idiopathic pulmonary fibrosis why IPF is a ans here because in q stem TLC is decreased and the coarse reticular pattern (honeycomb appearance) is also a giveaway. +

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submitted by ∗prostar(22)

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Constriction of terminal bronchioles- asthma (Increase TLC)

Destruction of alveolar walls- Emphysema(Increase TLC)

Increase mucus secretion in bronchioles- chronic bronchitis(Increase TLC)

Loss of elastic support to the walls of bronchioles-COPD(increase TLC)

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