A case is reported of prosthetic mitral valve obstruction in a patient
who had had three hospital admissions with massive hemoptysis. A diag
nosis was finally made after two-dimensional echocardiography with Dop
pler and cardiac catheterization were performed. The patient was succe
ssfully treated with re-replacement of the valve. Any new pulmonary or
cardiae symptom in a patient with a prosthetic valve requires prompt
evaluation and treatment.