[Chest wall Castleman's disease with massive pleural effusion]

A 38-year-old woman was admitted to our hospital due to dyspnea. A chest X-ray film showed a right-sided chest wall tumor and a massive pleural effusion. A sharply defined round tumor, 5 cm in diameter, was seen on a chest CT scan; this tumor was strongly stained by contrast medium. Angiography showed a feeding artery and strong tumor staining. Gallium scintigraphy showed no accumulation. The tumor was resected, after which the retention of pleural fluid stopped. The pathological diagnosis was hyaline vascular type Castleman's disease. In this case, hyaline vascular type Castleman's disease manifested on the chest wall as a vessel-rich tumor; can cause retention of pleural fluid without the syndrome of polyneuropathy, organomegaly, endocrinopathy, M protein, and skin changes.