Rapid daily expansion of highly mobile intracardiac calcified tissue: a case report

Abstract Background A calcified amorphous tumour (CAT) is a non-neoplastic mass lesion arising within the cardiac chamber. CATs are rare but common cause of organ embolism. In present study, we experienced case an intracardiac with calcification that, in contrast to typical CAT, suddenly appeared and rapidly expanded without inflammatory response based on pathological findings. Case summary 58-year-old Japanese man undergoing peritoneal haemodialysis had high-echoic mobile (15 × 6 mm), which was not visible transthoracic echocardiography (TTE) approximately month earlier, left ventricular outflow tract noted TTE performed during close examination for fever. Although multiple blood cultures were negative, ampicillin/sulbactam ceftriaxone initially administered because suspected culture-negative endocarditis. The enlarged (22 5 mm) over following days. CAT resected imaging findings calcification; however, did indicate inflammation fibrin that typically found CATs. Echocardiography 12 months after resection showed no recurrence. Discussion This tissue several similar features CAT. However, initial presentation, enlargement rate, differed from it unknown whether this subtype when detected using test, careful follow-up or early surgical should be considered given possibility rapid embolism caused by mass.