over the right chest wall, not obviously associated with any clinical abnormality. Ten days after admission, oedema of the face became apparent. Emination revealed a swollen right arm, a much enlarged and tender right breast, associated with dilated veins in the chest wall, and non-pulsatile distension of the neck veins. A diagnosis of superior vena caval obstruction was made. The liver was enl...

A 3-year-old boy had a history of cor triatriatum, which was diagnosed incidentally when he was 1 year old during workups for failure to thrive and funnel chest. Initial echocardiographic evaluation revealed no evidence of obstruction through the orifice (mean pressure gradient, 3 mm Hg). However, progressive flow obstruction was noted at follow-up. At 3 years of age, 2-dimensional echocardiogr...

A 48-year-old male with a history of secundum type atrial septal defect (ASD) closure in childhood presented to our outpatient clinic complaining of palpitation for six months. Interestingly, transthoracic and transesophageal echocardiography exams showed an undiagnosed partially unroofed coronary sinus associated with persistent left superior vena cava (LSVC) and Cor triatriatum.

In 2004, J.C. Tong found bounds for the approximation quality of a regular continued fraction convergent of a rational number, expressed in bounds for both the previous and next approximation. We sharpen his results with a geometric method and give both sharp upper and lower bounds. We also calculate the asymptotic frequency that these bounds occur.

A case of cor triatriatum dexter is described in which the anomalous right atrial partition is identified as the right venous valve; there is an associated anomaly of the right atrioventricular valve which combines features of Ebstein's anomaly, and an atypical, imperforate, tricuspid atresia.