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NBME 18 Answers

nbme18/Block 3/Question#34

52 yo woman with breast cancer

Contraction

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submitted by lae(5),

the radiation therapy caused fibrosis and the myofibroblasts "contract" during fibrosis, causing the closure of airways and thus atelectasis





Contraction atelectasis occurs when local or generalized fibrotic changes in the lung leads to collapsed alveoli. It can an occur after radiation therapy, necrotizing pneumonia, or granulomatous disease