Cardiac myxoma, a common benign primary tumor of the heart can be categorized into syndromic (Carney Complex) and non-syndromic(isolated). Carney Complex associated myxomas can be found in any region and system (cardiac, cutaneous, osseous, genitalia), and may manifest at a tender age. On the contrary, non-syndromic cardiac myxomas are usually confined to the chambers, and symptoms often present from 5th decade of life. Aortic valve myxoma is a very unusual occurrence, and presentation in a teen is extremely rare.
Case report
We share a case of aortic valve myxoma, uncovered using echocardiography in a 16-year-old male, admitted with complaints of exertional chest pain, dyspnoea and systolic murmur. Patient underwent uneventful surgery for tumor excision, and discharged 6-days post operation.
Conclusion
Given the high risk of developing cardiogenic stroke, infective endocarditis, degenerative effects on aortic valve leaflets and possible sudden death, like many other centers, we advocate for immediate liquidation of aortic myxoma regardless of age and symptoms.
Hinweise
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Abkürzungen
CM
Cardiac Myxoma
CNC
Carney Complex
L/R
Left/right ventricle
LA
Left atrium
NYHA
New York Heart Association
RA
Right atrium
Background
Aortic valve myxomas are a very rare finding of the non-syndromic primary benign cardiac tumors, and presentation in teen patients is extremely unusual. If not liquidated on time can cause a spectrum of complications [1‐4] and sudden death.
Case presentation
A 16-year-old male patient presented to our cardiology department with a 4-month history of exertional chest pain and dyspnea. It is alleged that, sometime in March,2018, the patient suffered from a ‘common-cold’, which presented in form of chest pain and high body temperature. Despite having undergone standard treatment and complete liquidation of both fever and chest pain at rest, any physical stress begun eliciting chest pain. On physical examination of the skin and genitalia excluded features associated with Carney Complex [3], while, auscultation revealed a systolic murmur in the 2nd right intercostal pace, which slightly muffled upon supine positioning. Clinical vitals at rest: BP 98/56 mmHg, pulse-88b/min, respirations rate-18b/min and body temperature 36.7 °C. Transthoracic echocardiography uncovered a lingering mass (Fig. 1, Panel. A), and a diagnosis of suspected myxoma was recorded. Other imaging modalities were non-remarkable. Given the complaints, patient was categorized under NYHA Class II prior surgery.
Fig. 1
Panels a & d, pre/post operation echocardiography (white arrow-myxoma), b-aortotomy & c –myxoma
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The patient was wheeled in operation room on emergency basis, and under cardiopulmonary bypass machine, after aortotomy (Panel B) a solid gelatinous mass (Panel.C) with stalk attached to right coronary cusp edge was excised and retrieved. The aortic valve and adjacent structures were intact. The aortic cavity was washed with saline to ensure complete liquidation of clots, which could potentially occlude coronary ostia. Aortotomy and chest were closed in standard fashion with two drainage tubes inserted. Prior discharge, transthoracic-echocardiography revealed no mass (Panel. D), and patient did not complain of exertional dyspnea apart from slight incisional tenderness. The morphological finding of aortic valve mass sample is reflected in Fig. 2. During his 2nd review, a month after operation, the patient had recovered and was re-categorized back to NYHA class I.
Fig. 2
Pathological [morphologic] report of aortic myxoma
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Discussion
Cardiac myxoma (CM), a common benign primary tumor of can be categorized into syndromic (Carney Complex) and non-syndromic(isolated). Carney Complex(CNC) associated myxomas can be found in any region and system (cardiac, cutaneous, osseous, genitalia), and may manifest at a tender age [3]. While, their counter-parts, are often confined to cardiac chambers [4, 5](LA-75%, RA-18%, L/R-V-6%, valves< 1%).In addition, non-syndromic CM’s are usually asymptomatic and their discovery often incidental [6, 7], with symptoms commonly manifesting from the 5th decade of life. Aortic valve myxoma is a rare finding, and a symptomatic manifestation in a teen, as is our case is extremely unusual. In one major study of 61 cases of CM, no single aortic case was isolated. However, manifestation symptoms (dyspnea-67%, systolic murmur-49.2%) at mean ages: 48.8 and 51.9 years in males and females were observed [5, 7].
Aortic valve myxoma associated complications and potentially fatal include cardiac outflow tract obstruction [1], embolic stroke [2, 3, 8] and myocardial infarction, infective endocarditis [7] and death [3, 5]. In one study of Cardiac related deaths of 29 patients with CNC, CM accounted for 13(44.8%), and 6(20.7%) due to CM emboli [3].To the best of our knowledge, our case is 3rd case of the reported aortic valve myxoma in a teen.
Conclusion
In view of the above, and many other reports, we advocate for immediate liquidation of the lesion, and surgical approach carry minimal risks with best outcome.
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Acknowledgements
We are grateful of the support from Shandong University.
Ethics approval and consent to participate
Hospital Ethics committee approved publication.
Consent for publication
Patient was informed and written consent obtained.
Competing interests
The authors declare that they have no competing interests.
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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