Tumor involvement of the left atrium and mitral valve: imaging features of intra-cardiac malignancy

Abstract

### Learning Point for Clinicians We presented pre-treatment imaging of rare primary intimal sarcoma involving the left atrium and mitral valve. Despite its rarity, imaging features of wide-based involvement of the tumor with intra-tumoral edema, post-gadolinium enhancement and a secondary tumor nodule with similar imaging findings involving the mitral valve were suggestive of intra-cardiac malignancy. Although the majority of these tumors arise from the aorta or central pulmonary arteries,1 cardiac intimal sarcoma is a rare primary cardiac neoplasm with only three reported cases.2 We presented pre-treatment imaging of rare primary intimal sarcoma involving the left atrium and mitral valve. Despite the rarity of primary cardiac intimal sarcoma, imaging features of wide-based involvement of the tumor with intra-tumoral edema, post-gadolinium enhancement and a secondary tumor nodule with similar imaging findings involving the mitral valve were suggestive of intra-cardiac malignancy. Preoperative imaging evaluation is particularly beneficial …