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Pulmonary vein compression by tumor: an unusual Doppler flow pattern
Carol L Chen1, Paul A Tunick, Itzhak Kronzon
1NYU School of Medicine, New York, New York 10016, USA.
Echocardiography (Mount Kisco, N.Y.)
|October 1, 2005
Summary
A large lung mass from metastatic renal cell carcinoma compressed pulmonary veins, causing unusual blood flow patterns. This case highlights how external tumors can mimic pulmonary vein stenosis, leading to shortness of breath.
Area of Science:
- Cardiology
- Oncology
- Radiology
Background:
- Metastatic renal cell carcinoma can present with extrathoracic manifestations.
- Pulmonary venous compression can lead to elevated pulmonary venous pressures and dyspnea.
- Extracardiac tumors can compress pulmonary veins, mimicking intrinsic pulmonary vein stenosis.
Observation:
- A 50-year-old female with metastatic renal cell carcinoma developed a large lung mass.
- Doppler assessment revealed high flow velocity in the pulmonary veins.
- An unusual finding of continuous antegrade flow throughout the cardiac cycle was observed, without reversal during atrial contraction.
Findings:
- The lung mass caused extrinsic compression of the pulmonary veins.
- The observed flow pattern was atypical for pulmonary vein stenosis.
- This compression led to symptoms of dyspnea.
Implications:
- Extracardiac tumors should be considered in the differential diagnosis of pulmonary venous abnormalities.
- Understanding these unusual flow patterns is crucial for accurate diagnosis and management.
- This case underscores the importance of comprehensive imaging and hemodynamic assessment in patients with metastatic disease and respiratory symptoms.