This case report demonstrates that abnormal insertion of the papillary muscle can occur in healthy individuals without cardiomyopathy and can be incidentally detected by cardiac CT.
CT detection of anomalous papillary muscle insertion in non-cardiomyopathy patients warrants awareness; leaves open prevalence and clinical relevance.
Abnormal insertion of the papillary muscles is rare and has been described only in patients with hypertrophic cardiomyopathy based on findings of echocardiography or autopsy. Herein, we reported a rare case of abnormal insertion of the papillary muscle in a 64-year-old man without cardiomyopathy, incidentally detected by cardiac computed tomography (CT). Multiplanar long-axis and three-dimensional volume-rendered reconstructed images revealed an abnormally inserted papillary muscle, which did not provoke left ventricular outflow tract obstruction. This is the first report of the anomaly in a healthy individual who was initially assessed by cardiac CT.
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Kang et al. (2016) studied this question.
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