We presented a clinical case of surgical treatment of gigantic left atrium in longstanding mitral regurgitation due to mitral valve disease diagnosed 23 years ago (patient refused surgery and was on medical treatment) and complicated by atrial fibrillation. The patient was referred for surgery with complaints on severe dyspnea on minimal exertion. weakness. fatigue. https://www.roneverhart.com/Tokidoki-X-Hello-Kitty-and-Friends-1-Blind-Box/