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[Cardiac involvement in central lung cancer]
Insights
This study analyzed chest x-rays in lung cancer patients with heart infiltration. Findings highlight indirect radiographic signs that indicate the need for further cardiac imaging like angiography.
Area of Science:
- Cardiothoracic Radiology
- Oncology Imaging
- Diagnostic Radiology
Background:
- Central lung cancer can infiltrate the heart, posing diagnostic challenges.
- Accurate assessment of cardiac involvement is crucial for treatment planning in lung cancer patients.
- Traditional radiographic methods may struggle to differentiate primary tumors from metastatic lymph nodes affecting the heart.
Observation:
- Evaluated 34 operated lung cancer patients with suspected or confirmed myocardial infiltration.
- Compared radiographic findings with surgical specimens to correlate imaging features with tumor extent.
- Identified specific radiographic patterns suggestive of cardiac involvement, including chamber shape changes and filling defects.
Findings:
- Tumor mass often includes primary lung cancer and metastatic bronchopulmonary lymph nodes, obscuring detailed radiographic visualization of the cardiac silhouette.
- Indirect radiographic signs, such as large hilar masses and obscured cardiac borders, were identified as indicators of potential cardiac infiltration.
- Angiography was utilized in 15 patients based on suspicious radiographic findings, confirming cardiac affection.
Implications:
- Radiographic analysis can identify indirect signs suggestive of cardiac infiltration by lung cancer.
- These indirect signs warrant further investigation with advanced imaging modalities like angiography.
- Improved diagnostic accuracy for cardiac involvement can lead to more tailored surgical and therapeutic strategies for lung cancer.
Abstract:
An x-ray picture of central lung cancer was analyzed in 34 operated patients in whom tumors had infiltrated the myocardium (left atrial infiltration in 33, right atrial infiltration in one, ventricular infiltration in 2). The comparison of x-ray findings with gross specimens of the removed lungs showed that tumor mass consisted of a primary tumor and metastatic bronchopulmonary lymph nodes that made impossible the differentiation of separate elements of the root x-ray image. Angiography was performed in 15 patients with suspected infiltration of the heart by a tumor on the basis of x-ray findings. Cardiac affection which was characterized on x-ray by change in the shape of the chambers, irregularity of their outlines or a filling defect at the site of tumor infiltration. Suspected cardiac infiltration by a tumor can be based on indirect x-ray signs: the presence of a large tumor mass in the area of the root, a shift of the deflated lung regions to the heart, the absence of an image of heart borders and pulmonary veins on tomograms, and a confluent image of the affected lung and cardiac shadow. These signs serve an indication for angiography.