MediAI

 Lipomatous Hypertrophy of the Interatrial Septum (LASH): A Multimodality Imaging Case Report and Review 심방 중격 지방종성 비대(LASH): 다중 모달리티 영상 증례 보고 및 검토 Keywords : lipomatous hypertrophy, interatrial septum, FDG PET/CT, cardiac fat, LASH, atrial arrhythmia, heart imaging, benign cardiac lesion, aging heart Introduction Lipomatous hypertrophy of the interatrial septum (LASH) is a rare but clinically significant benign cardiac condition. Although usually asymptomatic and discovered incidentally, LASH can mimic malignant lesions on FDG PET/CT, creating diagnostic challenges in oncologic patients undergoing restaging. This article presents a comprehensive discussion of LASH, grounded in a real case of an elderly woman undergoing restaging for non-small cell lung cancer. Through this case, we explore the imaging characteristics, pathophysiology, differential diagnosis, and clinical implications of LASH. Case Overview Patient History An 80-year-old woman with a prior history of segmen...