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Malignant pleural effusion from prostate adenocarcinoma
James C Knight1, Malia A Ray2, Sadia Benzaquen1
1University of Cincinnati, Pulmonary, Critical Care, and Sleep Division, 231 Albert Sabin Way, ML 0564, Cincinnati, OH 45267-0564, USA.
Respiratory Medicine Case Reports
|June 2, 2015
Summary
Malignant pleural effusions from prostate cancer are rare but can be diagnosed using cytology and prostate-specific antigen (PSA) levels. Further research is needed to establish diagnostic PSA thresholds in pleural fluid.
Area of Science:
- Oncology
- Pulmonology
- Pathology
Background:
- Prostate adenocarcinoma is a common male cancer, with metastasis to the lungs and pleura occurring frequently at autopsy.
- Malignant pleural effusions are an uncommon clinical presentation of prostate cancer.
- Current guidelines lack recommendations for assessing prostate-specific antigen (PSA) levels in pleural fluid.
Purpose of the Study:
- To investigate the diagnostic utility of PSA levels in pleural fluid for identifying malignant effusions secondary to prostate cancer.
- To highlight the diagnostic challenges and potential of PSA in managing rare cases of prostate cancer metastasis to the pleura.
Main Methods:
- Case presentation of a 73-year-old male with prostate cancer and dyspnea.
- Chest CT scan revealing bilateral pleural effusions.
- Thoracentesis for fluid analysis (cytology and PSA levels).
- Medical pleuroscopy to confirm metastatic disease.
Main Results:
- Thoracentesis confirmed an exudative effusion with atypical cells and elevated PSA levels.
- Medical pleuroscopy identified metastatic prostate adenocarcinoma foci on the pleura.
- The patient received symptomatic treatment with bilateral tunneled chest tubes for effusion drainage.
Conclusions:
- Diagnosis of malignant pleural effusion from prostate cancer can be supported by pleural fluid cytology and PSA levels.
- Elevated PSA in pleural fluid may aid diagnosis, but diagnostic thresholds are not established.
- Further studies are required to determine the sensitivity and specificity of PSA in pleural fluid for prostate cancer metastasis.
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