Key result
Cadaver dissection reveals rare direct insertion of anterior papillary muscle into mitral valve.
Why the study?
Direct insertion of the anterior papillary muscle into the mitral valve is an uncommon congenital malformation with limited anatomical descriptions.
Case Report (n=1)
This case report highlights a rare congenital malformation involving the direct insertion of the anterior papillary muscle into the mitral valve, which is important for surgical planning.
Rare papillary-muscle variant may warrant preoperative awareness in mitral surgery; single case leaves open prevalence and relevance.
Direct insertion of the anterior papillary muscle (DPM) into the mitral valve is uncommon. During the routine dissection of an adult female, a DPM into the mitral valve with abnormal chordae tendinae was observed. This abnormal papillary muscle was measured as 28.0 mm in length from myocardial to insertion, 14.8 mm in width, and 7.0 mm in depth. The embryology, symptoms, associated cardiac diseases, and surgical precautions of this congenital malformation in the heart are reviewed.
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Iwanaga et al. (2017) conducted a case report in Direct insertion of the anterior papillary muscle (DPM) into the mitral valve (n=1). Direct insertion of the anterior papillary muscle (DPM) was evaluated on Anatomical measurements of the abnormal papillary muscle. An abnormal direct insertion of the anterior papillary muscle into the mitral valve, measuring 28.0 mm in length, was observed during the routine dissection of an elderly female cadaver.
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