Cryptogenic organizing pneumonia CT

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Manpreet Kaur, MD [2]

Overview

CT scan is used to diagnose cryptogenic organizing pneumonia. Various findings seen on CT scan are subpleural and peribronchovascular consolidation, ground-glass attenuation and nodules, irregular linear opacities, bronchial wall thickening and dilatation and reverse halo sign (atoll sign).

CT Findings

Findings seen on CT scan are:^[1]^[2]

Subpleural and/or peribronchovascular consolidation
Ground-glass attenuation and nodules
Irregular linear opacities
Bronchial wall thickening and dilatation
The reverse halo sign (atoll sign)^[3]

Peripheral and peribroncovascular ground-glass opacities with small areas of consolidation in a patient with cryptogenic organizing pneumonia.^[4]

Multiple bilateral subsegmental consolidations and mild bronchial dilatation with bronchial wall thickening in a patient with cryptogenic organizing pneumonia.^[5]

References

↑ Müller NL, Staples CA, Miller RR (1990). “Bronchiolitis obliterans organizing pneumonia: CT features in 14 patients”. AJR Am J Roentgenol. 154 (5): 983–7. doi:10.2214/ajr.154.5.2108572. PMID 2108572.
↑ Lee KS, Kullnig P, Hartman TE, Müller NL (1994). “Cryptogenic organizing pneumonia: CT findings in 43 patients”. AJR Am J Roentgenol. 162 (3): 543–6. doi:10.2214/ajr.162.3.8109493. PMID 8109493.
↑ Kim SJ, Lee KS, Ryu YH, Yoon YC, Choe KO, Kim TS, Sung KJ (May 2003). “Reversed halo sign on high-resolution CT of cryptogenic organizing pneumonia: diagnostic implications”. AJR Am J Roentgenol. 180 (5): 1251–4. doi:10.2214/ajr.180.5.1801251. PMID 12704033.
↑ Image courtesy of Dr Martin Carnevale, Radiopaedia.org. From the case rID:15025
↑ Case courtesy of Dr Mohammad A. ElBeialy, Radiopaedia.org. From the case rID:28372

[pmid2108572-1] Müller NL, Staples CA, Miller RR (1990). “Bronchiolitis obliterans organizing pneumonia: CT features in 14 patients”. AJR Am J Roentgenol. 154 (5): 983–7. doi:10.2214/ajr.154.5.2108572. PMID 2108572.

[pmid8109493-2] Lee KS, Kullnig P, Hartman TE, Müller NL (1994). “Cryptogenic organizing pneumonia: CT findings in 43 patients”. AJR Am J Roentgenol. 162 (3): 543–6. doi:10.2214/ajr.162.3.8109493. PMID 8109493.

[pmid12704033-3] Kim SJ, Lee KS, Ryu YH, Yoon YC, Choe KO, Kim TS, Sung KJ (May 2003). “Reversed halo sign on high-resolution CT of cryptogenic organizing pneumonia: diagnostic implications”. AJR Am J Roentgenol. 180 (5): 1251–4. doi:10.2214/ajr.180.5.1801251. PMID 12704033.

[rpd1-4] Image courtesy of Dr Martin Carnevale, Radiopaedia.org. From the case rID:15025

[rpd2-5] Case courtesy of Dr Mohammad A. ElBeialy, Radiopaedia.org. From the case rID:28372

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