Stenosing Intracardiac Mass of the Mitral Valve: A Case Report and Review of the Literature

Introduction: Benign intracardiac tumours are the most common of the 5% of primary tumours and account for 90% of intracardiac tumours. Myxoma, which is the main benign tumour, rarely localizes to the mitral valve, in the order of 1-5%, associated with severe symptoms and enormous complications. The objective is to report a rare and severe case of mitral valve myxoma resulting in severe obstruction of the valve orifice. Presentation of Case: A 65-year-old Moroccan woman, without profession, the diabetic patient presented with progressive dyspnoea, in whom transthoracic echocardiography (TTE) completed by transesophageal echocardiography (TEE), a cardiac magnetic resonance imaging (MRI), a cerebro-throracoabdominopelvic Positron emission tomography-scan (PET-scan) showed a cauliflower-shaped mass embedded in the small mitral valve, evoking the diagnosis of myxoma, confirmed by the anatomopathological examination. A lumpectomy with mitral valve plasty was performed in association with coronary artery bypass surgery for a tri truncal lesion. The evolution was marked by an improvement in the clinical and echographic state. Discussion: Myxoma is the first benign tumour encountered in women between the 3rd and 6th decade, whose diagnosis is evoked by a TTE, better by a TEE or more, by a computed tomography (CT scan) or even a cardiac MRI which specifies the visualization of the soft parts with all the internal details of the myxoma, whose confirmation is carried out on the histopathological analysis of the operating room. Conclusion: The management was based on complete resection of the tumor associated with mitral valve plasty.

Diagnóstico de una enfermedad sistémica a través de masa intracardiaca / Diagnosis of a systemic disease based on an intracardiac mass

La aparición de linfomas no Hodgkin de alto grado de malignidad localizados en el corazón es extremadamente infrecuente. Sus manifestaciones clínicas son disímiles en relación con la localización del tumor, por lo que se debe sospechar su existencia ante el hallazgo de una masa intracardiaca. Se presentó un caso de linfoma no Hodgkin tipo B difuso de células grandes en estadio IVb a partir del hallazgo único, por ecocardiograma, de una masa intracardiaca...

Occurrence of highly malignant non-Hodgkin lymphomas in the heart is extremely rare. Their clinical manifestations vary with the location of the tumor. Therefore, their presence should be suspected whenever an intracardiac mass is observed. A case is presented of diffuse large B-cell stage IV non-Hodgkin lymphoma exclusively by the echocardiographic finding of an intracardiac mass...