title: Calcified amorphous tumor of the left atrial appendage.
abstract: A 57-year-old female with end-stage renal dysfunction was admitted to our hospital. The echocardiogram revealed a 9mm×22mm hyperechoic mass in the left atrial appendage (LAA). The mass was extremely mobile. Considering the high risk of embolic events, we decided on a surgical resection. Microscopic examination of the mass revealed a nodular focus of calcification and fibrosis with focal chronic inflammation of the atrial endocardium. The endocardium was uniformly thickened with no evidence of neoplastic proliferation. The mass was diagnosed with a calcified amorphous tumor (CAT). This is first report of CAT of the LAA.
authors.affiliation: Department of Cardiology, New Tokyo Hospital, Chiba, Japan; Interventional Cardiology Unit, New Tokyo Hospital, Chiba, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Watanabe
authors.affiliation: Department of Cardiology, New Tokyo Hospital, Chiba, Japan; Interventional Cardiology Unit, New Tokyo Hospital, Chiba, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Naganuma
authors.affiliation: Department of Cardiovascular Surgery, New Tokyo Hospital, Chiba, Japan; Interventional Cardiology Unit, New Tokyo Hospital, Chiba, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Nakao
authors.affiliation: Department of Cardiology, New Tokyo Hospital, Chiba, Japan; Interventional Cardiology Unit, New Tokyo Hospital, Chiba, Japan. Electronic address: boss0606@pluto.plala.or.jp.
authors.forename: Sunao
authors.initials: S
authors.lastname: Nakamura
mesh_terms: D020517:Atrial Appendage / Q000473:pathology*; D002114:Calcinosis / Q000473:pathology*; D015897:Comorbidity; D017548:Echocardiography, Transesophageal; D005260:Female; D006338:Heart Neoplasms / Q000453:epidemiology / Q000473:pathology*; D006801:Humans; D007676:Kidney Failure, Chronic / Q000453:epidemiology; D008875:Middle Aged; D006435:Renal Dialysis
keywords: Calcified amorphous tumor; Cardiac tumor; Left atrial appendage