Lung mass CT scan

Lung Mass Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2] Akshun Kalia M.B.B.S.[3]

Overview

CT scan is the method of choice for the evaluation of lung mass. On CT scan, characteristic findings of lung mass include single pulmonary nodule or mass with localized area of parenchymal consolidation and bubble-like areas of low attenuation within the lung mass (characteristic finding).

CT scan

CT scan is the method of choice for the evaluation of lung mass. The evaluation of lung mass will depend on several characteristics such as calcification, margins, location, distribution, and attenuation. On CT scan, characteristic findings of lung mass, include:

• Single pulmonary nodule or mass
• Localized area of parenchymal consolidation
• Bubble-like areas of low attenuation within the lung mass (characteristic finding)
• Hilar and mediastinal lymphadenopathy is uncommon
• Persistent peripheral consolidation

Malignant Lung Mass

Image courtesy:

• Bronchogenic lung carcinoma: Case courtesy of Dr Ahmed Abd Rabou, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/29297">rID: 29297</a>
• Bronchogenic lung carcinoma:Case courtesy of Dr Ahmed Abd Rabou, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/29002">rID: 29002</a>
• Adenocarcinoma of the lung:Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/13226">rID: 13226</a>
• Squamous cell lung carcinoma:Case courtesy of Dr Bruno Di Muzio, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/27915">rID: 27915</a>

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  Bronchogenic lung carcinoma: upper lobe collapse Case courtesy of Dr Ahmed Abd Rabou.
  Source: Radiopaedia.org

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  Bronchogenic lung carcinoma: upper lobe with lymphangitic spread Case courtesy of Dr Ahmed Abd Rabou.
  Source: Radiopaedia.org

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  Adenocarcinoma of the lung: ground-glass attenuation corresponds to a lepidic growth pattern and the solid component correspond to invasive patterns. Case courtesy of Dr Ahmed Abd Rabou.
  Source: Radiopaedia.org

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  Squamous cell lung carcinoma: Peripheral squamous cell lung carcinoma may be seen as a solid nodule/mass with or without an irregular border. The irregular margin can be attributed to a desmoplastic reaction or infiltrative growth Case courtesy of Dr Hani Salam.
  Source: Radiopaedia.org

Benign Lung Mass

Image courtesy: Case courtesy of Dr Angela Byrne, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/8123">rID: 8123</a>

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  Wegener granulomatosis