Coconut Atrium: Transmural Calcification of the Entire Left Atrium

AUTOR(ES)

Campo, Carlos Del

RESUMO

Massive calcification of the left atrium usually spares the interatrial septum, which provides a cleavage plane for surgical access to the mitral valve. Endoatriectomy with mitral valve replacement is the currently accepted corrective procedure because it affords maximum exposure while decreasing the risk of embolization and intraoperative hemorrhage. We describe a case in which the entire left atrium, including the septum, was thickly calcified and resembled a coconut shell. This condition prevented surgical correction of severe mitral stenosis. To our knowledge, this is the most severe case of left atrial calcification yet reported in the literature. Although it is not possible to establish preoperatively that the atrium is completely calcified and impossible to incise, when predisposing factors and evidence of complete transmural calcification are present, the surgeon should be aware of this possibility and should weigh carefully the decision to operate.

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