Cardiac lipoma arising from left ventricular papillary muscle: Resect or not? Young Sam Kim, MD, Kyung Hee Lee, MD, PhD, Suk Jin Choi, MD, PhD, Wan Ki.

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Cardiac lipoma arising from left ventricular papillary muscle: Resect or not? Young Sam Kim, MD, Kyung Hee Lee, MD, PhD, Suk Jin Choi, MD, PhD, Wan Ki Baek, MD, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 156, Issue 1, Pages 244-246 (July 2018) DOI: 10.1016/j.jtcvs.2018.01.040 Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Echocardiography (A) and magnetic resonance imaging (B) demonstrating a well-circumscribed, homogenous round mass (arrows) arising from posterior papillary muscle of the left ventricle. The mass shows a typical feature of lipoma, well-circumscribed homogenous density with fat signal intensity by T1-weighted image. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 244-246DOI: (10.1016/j.jtcvs.2018.01.040) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Operative view and histopathologic findings. A, The mass is seen from the left atrial side after the removal of mitral valve leaflets. B, In the photograph of the resected mass, note the myocardial tissue resected together with the adipose mass along the lower anterior aspect corresponding to the interventricular septum. C, Cross section of the gross specimen shows gradual replacement of the papillary myocardium by adipose tissue without definite encapsulation. D, Microscopically, the papillary muscle is diffusely infiltrated by mature adipocytes without nuclear atypia (hematoxylin and eosin, original magnification ×10; inset in panel D, hematoxylin and eosin, original magnification ×400). The Journal of Thoracic and Cardiovascular Surgery 2018 156, 244-246DOI: (10.1016/j.jtcvs.2018.01.040) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

A well-circumscribed mass at the base of posterior papillary muscle of the left ventricle. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 244-246DOI: (10.1016/j.jtcvs.2018.01.040) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

Video 1 Operative procedure. Video available at: https://www.jtcvs.org/article/S0022-5223(18)30263-0/fulltext. The Journal of Thoracic and Cardiovascular Surgery 2018 156, 244-246DOI: (10.1016/j.jtcvs.2018.01.040) Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions