• Hainey Scott and Reid Phil.
• Department of Respiratory Medicine, Western General Hospital, Edinburgh, UK.
• Brit J Hosp Med. 2024 Dec 30; 85 (12): 1181-18.

AbstractMalignant pleural effusion (MPE) is a common complication of malignancy and is regularly seen on the general medicine take. Diagnosis of MPE is indicative of advanced or metastatic disease and carries a poor prognosis, with median survival ranging from 3 to 12 months. Despite recent advancements in systemic anti-cancer treatment, the goal of management in MPE remains the palliation of symptoms. This article reviews the current guidelines and evidence on the assessment and management of MPE. Assessment involves imaging techniques such chest X-ray and computed tomography (CT) scans, whilst thoracic ultrasound has a crucial role in guiding diagnostic procedures. Diagnostic pleural aspiration remains a cornerstone for establishing a tissue diagnosis, although its yield is variable depending on tumour type. Emergence of targeted immunotherapy has necessitated the need for large tissue samples for molecular testing, driving the need for pleural biopsies in relevant cases. Management encompasses therapeutic aspiration, chemical pleurodesis and indwelling pleural catheter insertion, each offering distinct benefits and considerations. Recent developments in equipment and combined approaches have enhanced patient outcomes and quality of life. The complexity of MPE requires a patient-centred approach to assessment and management and where possible patients should be managed with specialists in pleural disease on an outpatient basis.

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