CT angiogram sign - lung adenocarcinoma
Updates to Case Attributes
The patient underwent a bronchoscopy and biopsy, and histopathology with IHC evaluation confirmed poorly differentiated non-small cell lung carcinoma, adenocarcinoma subtype.
This case demonstrates the CT angiogram sign that refers to normally enhancing pulmonary vessels appearing prominent on contrast-enhanced CT as they traverse an airless portion of the atelectatic lung. The atelectatic lung is hyperattenuating to skeletal muscle whereas the tumour is relatively hypoattenuating.
The CT angiogram sign can be seen in post-obstructive atelectasis, pneumonia, pulmonary oedema and malignancies such as lung adenocarcinoma, pulmonary lymphoma, and metastasis from gastrointestinal carcinoma. In this case the tumour
-<p>The patient underwent a bronchoscopy and biopsy, and histopathology with IHC evaluation confirmed <a href="/articles/non-small-cell-lung-cancer-3" title="Non-small cell lung cancer">poorly differentiated non-small cell lung carcinoma</a>, <a href="/articles/adenocarcinoma-of-the-lung" title="Lung adenocarcinoma">adenocarcinoma</a> subtype.</p><p>This case demonstrates the <a href="/articles/ct-angiogram-sign-lungs" title="CT angiogram sign (lungs)">CT angiogram sign</a> that refers to normally enhancing pulmonary vessels appearing prominent on contrast-enhanced CT as they traverse an airless portion of atelectatic lung. The atelectatic lung is hyperattenuating to skeletal muscle whereas the tumour is relatively hypoattenuating.</p><p>The CT angiogram sign can be seen in post-obstructive atelectasis, pneumonia, pulmonary oedema and malignancies such as lung adenocarcinoma, pulmonary lymphoma, and metastasis from gastrointestinal carcinoma. In this case the tumour</p>- +<p>The patient underwent a bronchoscopy and biopsy, and histopathology with IHC evaluation confirmed <a href="/articles/non-small-cell-lung-cancer-3" title="Non-small cell lung cancer">poorly differentiated non-small cell lung carcinoma</a>, <a href="/articles/adenocarcinoma-of-the-lung" title="Lung adenocarcinoma">adenocarcinoma</a> subtype.</p><p>This case demonstrates the <a href="/articles/ct-angiogram-sign-lungs" title="CT angiogram sign (lungs)">CT angiogram sign</a> that refers to normally enhancing pulmonary vessels appearing prominent on contrast-enhanced CT as they traverse an airless portion of the atelectatic lung. The atelectatic lung is hyperattenuating to skeletal muscle whereas the tumour is relatively hypoattenuating.</p><p>The CT angiogram sign can be seen in post-obstructive atelectasis, pneumonia, pulmonary oedema and malignancies such as lung adenocarcinoma, pulmonary lymphoma, and metastasis from gastrointestinal carcinoma.</p>
Updates to Study Attributes
The right lower lobe bronchus is occluded, and collapse consolidation of the right lower lobe is evident. A large ill-defined infiltrative mass encases the right hilar structures and extends into the adjacent mediastinum. After contrast medium administration, prominent vessels traverse an airless low attenuation portion of the consolidated lung (CT angiogram sign), and are displaced around a relatively hypovascular and lower attenuation area.
A few subcarinal and right paratracheal lymph nodes have a short axis diameter of up to 20 mm.
Mild mediastinal shift to the right.
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