RESUMO
A 64-year-old man with essential thrombocythemia was admitted to our hospital because of cardiac failure. Echocardiography revealed severe mitral regurgitation and a gallbladder tumor was detected incidentally by ultrasonography. Although the gallbladder tumor was strongly suspected to be malignant, we considered that the radical operation would be possible because of its early stage. After treatment of cardiac failure, cholecystectomy was performed. Pathological examination proved that the gallbladder tumor was malignant in T1N0M0 stage I. Afterwards, mitral valve plasty and maze operation were performed concomitantly. During the operation, activated coagulation time was kept over 400 sec with heparin. The operation was completed without major problems and the postoperative course was uneventful. The patient has not suffered from the recurrence of a gallbladder carcinoma or mitral regurgitation for 2 years.