Interleukin-6-producing thymic squamous cell carcinoma associated with Castleman's disease and nephrotic syndrome.

When a 63-year-old man was hospitalized with nephrotic syndrome due to focal segmental glomerulosclerosis, a mediastinal mass was discovered. A biopsy specimen obtained by mediastinoscopy showed findings compatible with the plasma cell type of Castleman's disease. Fever, anemia, and anti-nuclear antibody were present.

A Case of Ruptured Mitral Valve Aneurysm Complicating Long-Standing Aortic Regurgitation.

A 53-year-old man with aortic regurgitation was admitted to our hospital because of fever. A diagnosis of ruptured mitral valve aneurysm was made by Doppler echocardiography. Aortic regurgitant flow along the anterior mitral leaflet may have predisposed to mitral valve endocarditis, aneurysm formation, and its rupture.