Rapidly growing cardiac tumour in the right ventricle

Description 

A 77-year-old man with a history of Her2 negative, pancytokeratin-positive gastric cancer and synchronous grade 3a stage 2a follicular lymphoma (FLIPI score 3 at presentation) treated with chemotherapy was referred for transthoracic echocardiography (TTE) after a CT of the abdomen demonstrated an incidental low-density lesion in the right ventricle (RV) concerning for malignancy or thrombus. There was no mass present on TTE 2 months prior. Repeat TTE (figure 1) demonstrated a large echogenic mass causing right ventricular inflow and outflow tract (RVOT) obstruction. A cardiac MRI (figure 2) confirmed the presence of a heterogeneous mass with adherent superficial thrombus in the RV and extending into the RVOT, consistent in appearance with a tumour. On further review, a PET/CT performed 1 month prior to presentation showed a hypermetabolic node at the RV apex (maximum Standardized Uptake Value 5.7) felt to represent an initial metastatic focus, with...

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