Non small cell lung cancer CT: Difference between revisions
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Computed tomography is the method of choice for the diagnosis of non-small cell lung cancer.<ref name="pmid8190965">{{cite journal |vauthors=Rosado-de-Christenson ML, Templeton PA, Moran CA |title=Bronchogenic carcinoma: radiologic-pathologic correlation |journal=Radiographics |volume=14 |issue=2 |pages=429–46; quiz 447–8 |year=1994 |pmid=8190965 |doi=10.1148/radiographics.14.2.8190965 |url=}}</ref><ref name="pmid19234288">{{cite journal |vauthors=Parker MS, Chasen MH, Paul N |title=Radiologic signs in thoracic imaging: case-based review and self-assessment module |journal=AJR Am J Roentgenol |volume=192 |issue=3 Suppl |pages=S34–48 |year=2009 |pmid=19234288 |doi=10.2214/AJR.07.7081 |url=}}</ref><ref name="pmid7208937">{{cite journal |vauthors=Kundel HL |title=Predictive value and threshold detectability of lung tumors |journal=Radiology |volume=139 |issue=1 |pages=25–9 |year=1981 |pmid=7208937 |doi=10.1148/radiology.139.1.7208937 |url=}}</ref> | Computed tomography is the method of choice for the diagnosis of non-small cell lung cancer.<ref name="pmid8190965">{{cite journal |vauthors=Rosado-de-Christenson ML, Templeton PA, Moran CA |title=Bronchogenic carcinoma: radiologic-pathologic correlation |journal=Radiographics |volume=14 |issue=2 |pages=429–46; quiz 447–8 |year=1994 |pmid=8190965 |doi=10.1148/radiographics.14.2.8190965 |url=}}</ref><ref name="pmid19234288">{{cite journal |vauthors=Parker MS, Chasen MH, Paul N |title=Radiologic signs in thoracic imaging: case-based review and self-assessment module |journal=AJR Am J Roentgenol |volume=192 |issue=3 Suppl |pages=S34–48 |year=2009 |pmid=19234288 |doi=10.2214/AJR.07.7081 |url=}}</ref><ref name="pmid7208937">{{cite journal |vauthors=Kundel HL |title=Predictive value and threshold detectability of lung tumors |journal=Radiology |volume=139 |issue=1 |pages=25–9 |year=1981 |pmid=7208937 |doi=10.1148/radiology.139.1.7208937 |url=}}</ref> | ||
*In some cases, non-small cell lung cancers require further evaluation with [[MRI]] | *In some cases, non-small cell lung cancers require further evaluation with [[MRI]] | ||
*Common features of CT scan for the diagnosis of non-small cell lung cancer | *Common features of CT scan for the diagnosis of non-small cell lung cancer include: | ||
:*Assessment of the main bronchi | :*Assessment of the main bronchi | ||
:*Evaluation of the entire thorax | :*Evaluation of the entire thorax | ||
Revision as of 21:50, 23 February 2018
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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]
Overview
Computed tomography is the method of choice for the diagnosis of non-small cell lung cancer. On CT, characteristic findings of non-small cell lung cancer include ground-glass opacity, rounded or spiculated mass, local nodal involvement, intraluminar obstruction, and lobar collapse.
CT
Computed tomography is the method of choice for the diagnosis of non-small cell lung cancer.[1][2][3]
- In some cases, non-small cell lung cancers require further evaluation with MRI
- Common features of CT scan for the diagnosis of non-small cell lung cancer include:
- Assessment of the main bronchi
- Evaluation of the entire thorax
- Detection of chest wall invasion
- Assessment of hilar and mediastinal invasion/adenopathy
- Determination of non-small cell lung cancer staging
- Precise determination of size and tumor dimensions
- Detection of liver, bone, adrenal , and brain metastasis
On CT, characteristic findings of non-small cell lung cancer include:[3]
- Lung adenocarcinomas are typically peripherally located
- Usually measure <4 cm in diameter, very few show cavitation
- Perihilar and mediastinal involvement
- Ground glass opacity (slow growth), usually lesions double the size within a year
- Subtype of adenocarcinoma
- Single pulmonary nodule or mass
- Multicentric or diffuse disease
- Localized area of parenchymal consolidation
- Bubble-like areas of low attenuation within the mass are a characteristic finding
- Hilar and mediastinal lymphadenopathy is uncommon
- Persistent peripheral consolidation with associated nodules
- Centrally located within the lung
- Usually measure larger than 4 cm in diameter
- Frequent cavitation
- Commonly cause segmental or lobar lung collapse due to central location
- Rapid growth
- Early metastasizes to the mediastinum and brain
- Large mediastinal nodules/masses
- Lymph node involvement (frequently subcarinal)
- Nodular pleural thickening
- Pleural effusion
- Finger in glove sign: the bronchus distal to the obstruction is dilated
- Crazy-paving sign: appearance of ground-glass opacity with superimposed interlobular septal thickening and intralobular reticular thickening.
Gallery
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Bronchogenic lung carcincoma: upper lobe collapse
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Bronchogenic lung carcincoma: upper lobe with lymphangitic spread
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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.
-
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
References
- ↑ Rosado-de-Christenson ML, Templeton PA, Moran CA (1994). "Bronchogenic carcinoma: radiologic-pathologic correlation". Radiographics. 14 (2): 429–46, quiz 447–8. doi:10.1148/radiographics.14.2.8190965. PMID 8190965.
- ↑ 2.0 2.1 Parker MS, Chasen MH, Paul N (2009). "Radiologic signs in thoracic imaging: case-based review and self-assessment module". AJR Am J Roentgenol. 192 (3 Suppl): S34–48. doi:10.2214/AJR.07.7081. PMID 19234288.
- ↑ 3.0 3.1 3.2 Kundel HL (1981). "Predictive value and threshold detectability of lung tumors". Radiology. 139 (1): 25–9. doi:10.1148/radiology.139.1.7208937. PMID 7208937.