Case Report: Rare pleural effusion—a case of B-lymphoblastic lymphoma presenting with pleural effusion and diagnostic challenges

Malignant pleural effusion caused by lymphoma can be easily misdiagnosed as tuberculous pleurisy, as both conditions commonly show markedly elevated levels of ADA and LDH. Flow cytology examination of pleural fluid can be considered, and histological specimens should be actively obtained to clarify the pathological diagnosis. For patients with extensive pleural thickening, a CT-guided percutaneous pleural biopsy can be preferentially selected.