No abstract

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No abstract

This article is available in open access under Creative Common Attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially.

The paper presents a case report of a 6-year-old boy with broad QRS tachycardia, who was accidentally diagnosed with a cardiac tumour. The tachycardia occurred twice, 10 months apart, and was quickly interrupted in a night medical care unit by performing a carotid sinus massage. Electrocardiography was performed, but its low quality did not allow for a detailed analysis, except for the heart rate, which was 180 bpm. Cardiological diagnosis was performed in a reference centre. No laboratory abnormalities were found. Holter ECG recorded only 374 single ventricular beats, while a routine echo revealed a very large 4.2 × 3.1 cm tumour in the interventricular septum, which did not impede intracardiac blood flow. The presence of the tumour was confirmed by magnetic resonance imaging of the heart, in which a fibroma was suspected. A beta-blocker (metoprolol) was included in the treatment and further cardiac monitoring was recommended. The boy was discharged home with a recommended follow-up in 2 months. He did not report for the appointment, while his parents requested for full imaging documentation.