Non-pyothorax-associated primary pleural lymphoma without pleural effusion in an immunocompetent patient: a case report and literature review

Although the pleura can be frequently invaded by lymphoma, primary pleural lymphoma is rare and relevant published literature are all case reports (1). It is usually divided into two types: primary effusion lymphoma (PEL) and pyothorax-associated lymphoma (PAL) (2). Primary pleural lymphoma without pleural effusion and history of chronic pyothorax is extremely rare and evidence-based decisions are few.