[Pre-capillary pulmonary hypertension complicating CREST syndrome. Apropos of a case].

Pre-capillary pulmonary hypertension was the presenting sign of a CREST syndrome in a 65 year old woman. The diagnosis of this form of scleroderma is based on the association of a number of features (calcinosis, Raynaud's phenomenon, oesophageal dyskinesia, sclerodactylia and telangectasia). Scleroderma is the systemic disease which is usually complicated by pre-capillary pulmonary hypertension.

[Coronary embolism disclosing thrombosis on a Medtronic-Hall aortic valve prosthesis in aortic position].

A 32 year-old-man admitted to hospital on the third day of myocardial infarction, three months after aortic valve replacement with a mechanical Medtronic-Hall prosthesis. The embolic character of the disease was evident on coronary angiography which showed a large thrombus in the left main coronary artery. The thrombosis of the valve prosthesis was not detected by non-invasive investigations but at aortography, confirmed at surgery.

[A rare cause of pure isolated chronic aortic insufficiency: congenital quadricuspid aortic valve. Apropos of 2 cases].

The authors report two new cases of congenital quadricuspid aortic valve complicated by pure, severe, chronic, aortic regurgitation. This abnormality was diagnosed fortuitously at transoesophageal echocardiography in one case and at aortography in the other, and confirmed at surgery. This congenital abnormality was associated with superior displacement of the left coronary ostium.