Myxomas are generally polypoid, often pedun-culated, rarely sessile, and round or oval, with smoothor soft lobulated surface. The tumor size ranges from1 to 15 cm in diameter; mostly are 5 to 6 cm. Mostmyxomas originate from left atrium. Right-sidedmyxomas are extremely rare and can present withnonspecific signs and symptoms. Despite the lackof symptoms and signs they should have a surgicalresection. Surgical removal of the tumors should beperformed as soon as possible because the long termprognosis is excellent and recurrences are rare.This paper reports a case of right atrial myxoma inan 11-year-old girl.
Primary congenital cardiac tumors, especiallyintracardiac tumors, are rare in children.Rhabdomyoma is the most common oneand usually diagnosed in the first few days oflife. Referral from pediatric cardiac centers found thatthe incidence of cardiac tumors was 0.08%-0.20%.Rhabdomyoma represents 36%-42% in autopsy seriesand 79% in clinical series.
Penyakit Kawasaki adalah penyakit akibat vaskulitis akut menyeluruh. Sampai saat ini penyebabnya secara pasti belum diketahui, diduga karena infeksi, toksin atau kelainan imunoregulator. Penyakit ini tersebar luas di seluruh dunia, 80% menyerang anak di bawah usia 5 tahun. Diagnosis ditegakkan apabila terdapat panas lebih dari 5 hari, ditambah 4 dari 5 gejala berikut yaitu injeksi konjungtiva bilateral, mukosa mulut dan faring kemerahan atau pecah-pecah, edema dan atau eritema pada ekstremitas, ruam kulit, limfadenopati servikal yang tidak dapat dijelaskan oleh penyakit lain yang penyebabnya diketahui. Dua puluh sampai 25% dapat berkembang menjadi aneurisma arteri koronaria. Pengobatan aspirin dosis tinggi dan gamma globulin bertujuan untuk mengurangi proses inflamasi pada miokardium dan dinding arteri koronaria dan aspirin dosis rendah untuk menghambat agregasi trombosit. Pembedahan dilakukan apabila gejalanya berkembang menjadi angina dan terdapat bukti obstruksi satu atau lebih arteri koronaria mayor. Prognosis tergantung dari ada tidaknya kelainan arteri koronaria dan kematian sebagian besar akibat infark miokardium.
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