Superior mesenteric artery occlusion as the manifestation of left atrial myxoma: an extremely rare occurrence

Description

A 62-year-old woman was presented to the surgical ward, with severe abdominal pain and vomiting. She had sinus tachycardia (135/min) and her blood pressure was 80/60 mm Hg. The physical examination revealed generalised abdominal distension with signs of peritonitis. Laboratory parameters revealed polymorphonuclear leucocytosis (total leucocyte count of 21 000/mm³ with 88% neutrophils), blood urea nitrogen=74 mg/dL and serum creatinine=2.1 mg/dL. X-ray of the abdomen showed air under the diaphragm. CT angiography revealed absence of contrast beyond the mid segment of the superior mesenteric artery (SMA) (figure 1). A large filling defect was noted in the left atrium (LA) on CT scan (figure 2). Echocardiogram also demonstrated a large 3.1x3.2 cm rounded, mobile mass in the left atrium, which was heterogeneous in echogenicity (figure 3A). It was attached to the interatrial septum in the region of the fossa ovalis. The LA appendage was clear (figure...

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