Adenocarcinoma of the lung CT: Difference between revisions

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{{CMG}}; {{AE}} {{SC}}
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==Overview==
==Overview==
Chest CT scan may be helpful in the diagnosis of adenocarcinoma of the lung. Finding on CT scan suggestive of adenocarcinoma of the lung is a lung nodule with a rounded or irregular region of increased attenuation.
[[Computed tomography|Chest CT scan]] may be helpful in the diagnosis of adenocarcinoma of the lung. Finding on [[Computed tomography|CT scan]] suggestive of adenocarcinoma of the lung is a [[Pulmonary nodule|lung nodule]] with a rounded or irregular region of increased [[attenuation]].


==CT Scan==
==CT Scan==
* Findings on CT scan suggestive of adenocarcinoma of the lung include:<ref name="radio">Adenocarcinoma of the lung. Dr Yuranga Weerakkody and A.Prof Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/adenocarcinoma-of-the-lung </ref>
* [[Computed tomography|CT scan]] is the preferred modality for staging adenocarcinoma of the lung.
** Lung nodule with a rounded or irregular region of increased attenuation, measuring less than 3 cm  
* Findings on [[Computed tomography|CT scan]] suggestive of adenocarcinoma of the lung include:<ref name="radio">Adenocarcinoma of the lung. Dr Yuranga Weerakkody and A.Prof Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/adenocarcinoma-of-the-lung </ref>
** Based on degree of attenuation, lung nodules may be either ground glass, sub-solid, or solid.  
** Adenocarcinoma appears as a [[Pulmonary nodule|lung nodule]] with a rounded or irregular region of increased attenuation, measuring less than 3 cm.
** Histologically, the ground-glass attenuation corresponds to a lepidic growth pattern and the solid component corresponds to invasive patterns.
** Based on degree of [[attenuation]], [[Pulmonary nodule|lung nodules]] may be either ground glass, sub-solid, or solid.  
** Hence, the preinvasive category of adenocarcinoma in situ, minimally invasive adenocarcinoma, and lepidic predominant invasive adenocarcinoma is often seen as ground glass nodule or sub-solid nodule with a predominant ground-glass component.
** Ground-glass [[attenuation]] corresponds to a lepidic growth pattern.
** On the other hand, the remaining invasive subtypes of adenocarcinoma is usually a solid nodule but may also subsolid and only occasionally seen as ground glass nodule.
** Solid component corresponds to [[Invasive (medical)|invasive]] patterns.
** Preinvasive category of adenocarcinoma in situ, minimally invasive adenocarcinoma, and lepidic predominant invasive adenocarcinoma has mostly a ground-glass component.
** Invasive subtypes of adenocarcinoma are usually solid [[Nodule (medicine)|nodules]].


* Invasive mucinous adenocarcinoma subtype may have a variable appearance ranging from consolidation, air bronchograms or seen as multifocal subsolid nodules or masses.
* Invasive mucinous adenocarcinoma subtypes may have a variable appearance:
** [[Consolidation (medicine)|Consolidation]]
** Air bronchograms  
** Multifocal subsolid [[Nodule (medicine)|nodules]] or masses
[[File:Adenocarcinoma-of-the-lung-3.jpg|500px|none|thumb|lung adenocarcinoma.Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/41015">rID: 41015</a>]]
[[File:Adenocarcinoma-of-the-lung-6 (1).jpg|500px|none|thumb|lung adenocarcinoma.Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/42446">rID: 42446</a>]]


==References==
==References==

Latest revision as of 15:00, 23 October 2019

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shanshan Cen, M.D. [2]

Overview

Chest CT scan may be helpful in the diagnosis of adenocarcinoma of the lung. Finding on CT scan suggestive of adenocarcinoma of the lung is a lung nodule with a rounded or irregular region of increased attenuation.

CT Scan

  • CT scan is the preferred modality for staging adenocarcinoma of the lung.
  • Findings on CT scan suggestive of adenocarcinoma of the lung include:[1]
    • Adenocarcinoma appears as a lung nodule with a rounded or irregular region of increased attenuation, measuring less than 3 cm.
    • Based on degree of attenuation, lung nodules may be either ground glass, sub-solid, or solid.
    • Ground-glass attenuation corresponds to a lepidic growth pattern.
    • Solid component corresponds to invasive patterns.
    • Preinvasive category of adenocarcinoma in situ, minimally invasive adenocarcinoma, and lepidic predominant invasive adenocarcinoma has mostly a ground-glass component.
    • Invasive subtypes of adenocarcinoma are usually solid nodules.
  • Invasive mucinous adenocarcinoma subtypes may have a variable appearance:
lung adenocarcinoma.Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/41015">rID: 41015</a>
lung adenocarcinoma.Case courtesy of Dr Hani Salam, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/42446">rID: 42446</a>

References

  1. Adenocarcinoma of the lung. Dr Yuranga Weerakkody and A.Prof Frank Gaillard et al. Radiopaedia 2015. http://radiopaedia.org/articles/adenocarcinoma-of-the-lung


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