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Mirmomen SM, Arai AE, Turkbey EB, Bradley AJ, Sapp JC, Biesecker LG, Sirajuddin A. Cardiothoracic imaging findings of Proteus syndrome. Sci Rep 2021; 11:6577. [PMID: 33753828 PMCID: PMC7985501 DOI: 10.1038/s41598-021-86029-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/08/2021] [Indexed: 12/12/2022] Open
Abstract
In this work, we sought to delineate the prevalence of cardiothoracic imaging findings of Proteus syndrome in a large cohort at our institution. Of 53 individuals with a confirmed diagnosis of Proteus syndrome at our institution from 10/2001 to 10/2019, 38 individuals (men, n = 23; average age = 24 years) underwent cardiothoracic imaging (routine chest CT, CT pulmonary angiography and/or cardiac MRI). All studies were retrospectively and independently reviewed by two fellowship-trained cardiothoracic readers. Disagreements were resolved by consensus. Differences between variables were analyzed via parametric and nonparametric tests based on the normality of the distribution. The cardiothoracic findings of Proteus syndrome were diverse, but several were much more common and included: scoliosis from bony overgrowth (94%), pulmonary venous dilation (62%), band-like areas of lung scarring (56%), and hyperlucent lung parenchyma (50%). In addition, of 20 individuals who underwent cardiac MRI, 9/20 (45%) had intramyocardial fat, mostly involving the endocardial surface of the left ventricular septal wall. There was no statistically significant difference among the functional cardiac parameters between individuals with and without intramyocardial fat. Only one individual with intramyocardial fat had mildly decreased function (LVEF = 53%), while all others had normal ejection fraction.
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Affiliation(s)
- S Mojdeh Mirmomen
- Cardiovascular and Pulmonary Branch, National Heart Lung and Blood Institute, National Institutes of Health, Building 10, Room B1D416, 10 Center Drive, Bethesda, MD, 20814, USA
| | - Andrew E Arai
- Cardiovascular and Pulmonary Branch, National Heart Lung and Blood Institute, National Institutes of Health, Building 10, Room B1D416, 10 Center Drive, Bethesda, MD, 20814, USA
| | - Evrim B Turkbey
- Radiology and Imaging Sciences, National Institutes of Health, Building 10, Room 1C336, Bethesda, MD, 20814, USA
| | - Andrew J Bradley
- Cardiovascular and Pulmonary Branch, National Heart Lung and Blood Institute, National Institutes of Health, Building 10, Room B1D416, 10 Center Drive, Bethesda, MD, 20814, USA
| | - Julie C Sapp
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Building 10, Room 8D47E, Bethesda, MD, 20814, USA
| | - Leslie G Biesecker
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Building 10, Room 8D47E, Bethesda, MD, 20814, USA
| | - Arlene Sirajuddin
- Cardiovascular and Pulmonary Branch, National Heart Lung and Blood Institute, National Institutes of Health, Building 10, Room B1D416, 10 Center Drive, Bethesda, MD, 20814, USA.
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Selthofer-Relatić K, Belovari T, Bijelić N, Kibel A, Rajc J. Presence of Intramyocardial Fat Tissue in the Right Atrium and Right Ventricle - Postmortem Human Analysis. Acta Clin Croat 2018; 57:122-129. [PMID: 30256020 PMCID: PMC6400345 DOI: 10.20471/acc.2018.57.01.15] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Histologic and radiologic studies describe intramyocardial fat tissue as a normal finding or as part of cardiac pathology. The role of fat cells within the myocardium is not fully understood. The aim of this study was to assess fat tissue distribution in the myocardium of right atrium (RA) and right ventricle (RV) and age differences in subjects free from cardiac disease. The study included 10 males without cardiac disease divided into two groups according to age (below/above 50 years). Three cross sections were performed (RV free wall and apex and RA free wall) with histomorphological analysis on digital photographs. The shares of total myocardial fat (TMF), peri-vascular fat (PVF) and non-perivascular (nPVF) fat were calculated. Samples from the older group had larger amounts of fat in the epicardium and myocardium, without statistically significant differ-ence (TMF p=0.847, PVF p=0.4 and nPVF p=0.4). The largest quantities of fat tissue were found in the RV apex samples (14.9%), followed by RV free wall (7.5%) and RA (4.5%), where total apical RV fat share was significantly larger than in RA sample (p=0.044). Intramyocardial fat cells were present within the non-diseased RA and RV in all samples, mostly in the apex. Further investigations on age difference, effect of visceral obesity and sex differences are needed.
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Affiliation(s)
| | - Tatjana Belovari
- Department of Histology and Embryology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Nikola Bijelić
- Department of Histology and Embryology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Aleksandar Kibel
- Department of Cardiovascular Disease, Osijek University Hospital Centre, Osijek, Croatia.,Department of Physiology and Immunology, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Jasmina Rajc
- Department of Pathology and Forensic Medicine, Osijek University Hospital Centre, Osijek, Croatia
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