Related Experiment Videos
How should cancer presenting as a malignant pleural effusion be managed?
1Lung Unit, Royal Marsden NHS Trust, Sutton, Surrey, UK.
British Journal of Cancer
|September 1, 1996
Summary
Malignant pleural effusion without a known primary tumor often originates from lung cancer. Thoracic CT scans identified the primary in 34% of cases, and palliative chemotherapy provided significant symptomatic relief and effusion control.
Area of Science:
- Oncology
- Pulmonology
- Radiology
Background:
- Malignant pleural effusion (MPE) without an identified primary tumor presents a diagnostic challenge.
- Determining the primary tumor site is crucial for appropriate treatment and prognosis.
Purpose of the Study:
- To review the natural history of MPE with an unknown primary.
- To evaluate the diagnostic yield of investigations for identifying the primary tumor.
- To assess the efficacy of palliative chemotherapy in managing MPE.
Main Methods:
- Retrospective study of 42 patients with MPE and an initially unknown primary.
- Investigations included thoracic CT, bronchoscopy, abdominal/pelvic CT, and ultrasounds.
- Chemotherapy response assessed via symptom improvement and pleural effusion reaccumulation.
Main Results:
- A primary tumor, predominantly lung cancer, was identified in 36% of patients.
- Thoracic CT scans diagnosed a lung primary in 34% of cases; bronchoscopy was negative when CT was negative.
- Chemotherapy resulted in symptomatic improvement in 78% and objective response (no reaccumulation) in 86% of patients.
Conclusions:
- Thoracic CT is valuable for diagnosing lung cancer as the primary in MPE.
- Palliative chemotherapy is effective in managing symptoms and controlling pleural effusions in MPE.
- Further investigations beyond thoracic CT and bronchoscopy had limited diagnostic value.