右房粘液腫の1例—経食道心エコーの有用性

A Case of Right Atrial Myxoma:the Availability of Transesophageal Echocardiography for the Detection of Right Atrial myxoma

　症例は72歳女性，平成元年7月頃より労作時の動悸，易疲労感にて近医受診．経胸壁心エコーより右房内に腫瘤を認め，当科を紹介された．経食道心エコーにて心房中隔に茎を持ち，内部エコーが不均一で一部に嚢胞様エコーを示す可動性の腫瘤を認めた．摘出手術の結果，重さ75g，大きさ7.5×5×4.5cmの右房粘液腫であった．本症例の診断に経食道心エコーがきわめて有用であった．

A 72-year-old woman had experienced palpitation and fatigue during excersion for two months and was referred to our hospital from her nearby hospital. On physical examination, a systolic murmur was heard in the left fourth intercostal space. A chest X-ray film showed cardiac enlargement (CTR 64%). An ECG showed elevated P waves in leads Ⅱ, Ⅲ.

Transthoracic echocardiography revealed a large oval heterogeneous mass in the right atrium. Transeso-phageal echocardiography (TEE) revealed the right atrial mass clearly, which was attached to the atrial septum with a short wide stalk.