RESUMEN
Intracardiac tumour is rare, and intracardiac myxoma is the most common intracardiac tumour of the heart. The majority of these tumours arise at the left and right atrium, and a presentation of such a tumour other than the mentioned is atypical and very rare. Due to the rare occurrence, clinicians often misdiagnose it as infective endocarditis especially if the tumour is located near the valves and causing outflow gradient stenosis on echocardiography. A multi-modal cardiac imaging and a multi-disciplinary approach are paramount to make a correct diagnosis and treatment strategies. We would like to report a rare case of a right ventricular myxoma of a young girl, who was initially treated with infective endocarditis, which turned out to be a rare atypical Right ventricular myxoma, which was then surgically excised. The patient was successfully discharged after 3 years of follow up echocardiography showed free of tumour recurrence.
RESUMEN
Syndrome of inappropriate anti-diuretic hormone (SIADH) can be presented as a paraneoplastic syndrome in primary malignancies involving the lung and brain. However, the development of SIADH in primary thymic carcinoma is poorly documented. We report a case of an elderly, with an initial presentation of symptomatic persistent hyponatremia as a paraneoplastic syndrome of SIADH with an incidental finding of anterior mediastinal mass confirmed on imaging. Further investigations are consistent with the diagnosis of poorly differentiated locally advanced thymic carcinoma with lung infiltration (T3N1Mx). The patient underwent an En-bloc total thymectomy and subsequently completed adjuvant chemotherapy and further follow-up showed a complete resolution of hyponatraemic SIADH. In conclusion, SIADH may be presented as a paraneoplastic syndrome in primary thymic carcinoma and early detection of thymic malignancy is paramount to ensure early diagnosis and prognostication.