Right atrial thrombosis associated with sagittal sinus thrombosis caused by protein C-S deficiency.

Right atrial thrombi may develop within the right atrium or may have peripheral venous origins that, on their way to the final destination site lodge in, right atrium. Right atrial thrombosis is classified as two type: A (mobile, thin) and B (non mobile and attached to atrial wall) that they are probably of cardiac origin due to local pathology, indwelling catheter, atrial fibrillation, stasis, rheumatological or hematological disease like protein C or S deficiency. Protein C deficiency has been reported to be a risk factor for thrombosis in multiple organs as a result of inactivation of factor of Va. We describe a case of a huge right atrial thrombus with cerebral sagittal sinus thrombosis, in a protein C-S deficient patient, in which right atrial clot was successfully removed surgically and sagittal vein treated conservatively with full recovery of his central neurologic symptom. Magnetic Resonance Imaging demonstrated thrombosis in those regions.