Undiagnosed pleural effusion treated with traditional Chinese medicine: A case report.

The main clinical manifestations of pleural effusion are exertional dyspnea, predominantly dry cough, and pleuritic chest pain. To treat pleural effusion appropriately, it is important to determine its etiology; which however, remains unclear in nearly 20% of cases.A 73-year-old man with a history of invasive pulmonary tuberculosis (TB), had been experiencing chest congestion and dyspnea with undiagnosed pleural effusion for six years. After a series of clinical examination and laboratory tests, there was still no clear diagnosis. Despite administering diuretics and intermittent draining, the patient's condition aggravated progressively. He sought further treatment at Dongzhimen Hospital Respiratory Outpatient Clinic. The patient was treated with Zanthoxylum and Trichosanthes Decoction (Jiao Mu Gua Lou Tang). After one and a half years, his symptoms greatly improved and ultrasound revealed that the pleural effusion had apparently absorbed.It is suggested that TCM herbal formulas can play a critical role in preventing the progression of complicated, undiagnosed pleural effusion, especially in cases of poor response to conventional therapy and thoracentesis. Additional studies on the functions and mechanisms of the medicinals are warranted.