CASE REPORTS  CARDIAC SECTION 

The Journal of Cardiovascular Surgery 2001 August;42(4):485-8

Copyright © 2009 EDIZIONI MINERVA MEDICA

language: English

Atrial blood cyst in an adult with regurgitation of mitral and tricuspid valves

Ichiba T., Kamihira S., Namba T. *, Kuroda H. **, Hara Y. **, Ohgi S. **, Horie Y. ***

From the Department of Cardiovascular Surgery *Department of Anesthesia Tuyama Daiichi Hospital, Tuyama, Japan **Department of Surgery ***Department of Pathology Tottori University Faculty of Medicine, Yonago, Japan

Blood ­cysts of ­the ­heart ­are extreme­ly ­rare in ­adults ­and usu­al­ly ­involve ­valves or ­the ­left ven­tri­cle. Although ­two cas­es of ­blood ­cysts in ­the ­right atri­um in ­adults ­have ­been report­ed, a ­cyst com­bined ­with a dis­or­der of ­the ­valves ­has nev­er ­been report­ed. We ­report a 52-­year-­old wom­an ­with a ­blood ­cyst ­that gen­er­at­ed ­from ­the ­right atri­al sep­tum. Furthermore, ­the ­patient ­had regur­gi­ta­tion of ­both ­the ­mitral ­and tri­cus­pid ­valves ­and ­then under­went sur­gi­cal exci­sion of ­the ­blood ­cyst, ­mitral ­valve plas­ty ­and tri­cus­pid ­valve annu­lo­plas­ty. We ­believe ­that it is pos­sible to diag­nose ­blood ­cysts ­with ech­o­car­di­og­ra­phy, CT ­and mag­net­ic res­o­nance imag­ing. Echocardiography ­showed ­the ­cyst as a cir­cle with­out a com­plete ­inner ­free-­echo. CT ­and mag­net­ic res­o­nance imag­ing ­showed a ­mass ­with a ­non-­enhanced ­inner struc­ture. Furthermore, ­the lat­ter ­showed a ­cyst ­that ­was ­enhanced by T1- ­but ­not T2-weight­ed imag­es, indi­cat­ing ­that ­the con­tent of ­the ­cyst ­was a per­sis­tent sub­stance ­such as ­blood. Concerning ­the gen­er­a­tion of ­blood ­cysts, we hypoth­e­size ­that het­er­o­plas­tic ­growth aris­ing ­from prim­i­tive per­i­car­dial mes­o­the­li­um caus­es dis­or­ders of ­valves ­and ­blood ­cysts.