右房粘液腫の1例—手術前後の心エコー所見を中心に

A Case of Right Atrial Myxoma:M-mode and pulsed-Doppler echocardiographic findings before and after operation

　症例は54歳，男性．1991年4月より労作時息ぎれ，立ちくらみを自覚し当院受診．断層心エコーで，右房内に拡張期に一部右室へ脱出する空洞を有する有茎性腫瘤を認め，摘出手術を行った．右房粘液腫手術前後のMモードおよびDoppler心エコーより，術後左室拡張期流入動態の改善と前負荷の増大を認め，自覚症状は消失した．

There are some reports concerning operations of right atrial myxoma. But precise effect on systemic hemodynamics before and after operation of right atrial myxoma has not been reported. We studied hemodynamics of a 54 year-old male with right atrial myxoma before and after removal of myxoma by M-mode and two-dimensional echocardiography. He was admitted to our hospital because of dyspnea on effort and orthostatic dizziness. On two-dimensional echocar-diography the apical four chamber view showed an abnormal huge mass echo with cystic change (6.9×4.4 cm) moving between the right atrium and the orifice of tricuspid valve.