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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Cryptogenic organizing pneumonia CT

Introduction

Overview

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

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

References

  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.
  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.
  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.
  4. ↑ Image courtesy of Dr Martin Carnevale, Radiopaedia.org. From the case rID:15025
  5. ↑ Case courtesy of Dr Mohammad A. ElBeialy, Radiopaedia.org. From the case rID:28372

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