Lipomatous hypertrophy of the atrial septum can rapidly enlarge with intralesional hemorrhage post-TAVI, mimicking malignant cardiac tumors.
This case highlights that lipomatous hypertrophy of the atrial septum can undergo rapid haemorrhagic expansion following TAVI, mimicking a malignant cardiac tumour.
Tasa de eventos absoluta: 0% vs 0%
Abstract Background Cardiac masses encompass a broad differential, including benign tumours, malignancies, and pseudotumours. Accurate diagnosis requires integration of clinical context, patient characteristics, lesion location, and imaging features. In select cases, tissue characterization is necessary. We describe a case of a rapidly enlarging interatrial mass following transcatheter aortic valve implantation (TAVI). Case summary A 70-year-old man underwent TAVI for severe low-flow, low-gradient aortic stenosis. Preprocedural imaging revealed an incidental interatrial mass consistent with lipomatous hypertrophy of the atrial septum (LHAS). Six months later, the mass showed significant interval growth, raising concern for malignancy. Multimodality imaging, including cardiac magnetic resonance imaging and FDG positron emission tomography yielded indeterminate results. An echocardiography-guided biopsy was performed, and histopathologic analysis confirmed LHAS with intralesional haemorrhage likely incurred during the TAVI procedure. Discussion While LHAS is typically benign and stable or slowly progressive, rare cases may present with atypical features and rapid growth, mimicking malignant cardiac tumours. This case represents the first reported instance of LHAS with haemorrhagic expansion.
Küçük et al. (Sun,) reported a other. Lipomatous hypertrophy of the atrial septum can rapidly enlarge with intralesional hemorrhage post-TAVI, mimicking malignant cardiac tumors.