[Lipomatous hypertrophy of the interatrial septum. Apropos of 3 cases and review of the literature].

Lipomatous hypertrophy of the interatrial septum is characterised by an accumulation of fatty tissue in the interatrial septum. The authors report three cases, one presenting with sinus tachycardia and the other two being chance findings. Echocardiography associated with cardiac computerised tomography or magnetic resonance imaging usually confirms the diagnosis.

[Arteriovenous fistula caused by spontaneous rupture of an aortic or iliac aneurysm in the iliocaval venous system. Apropos of 2 cases].

The authors report two cases of arteriovenous fistula due to spontaneous rupture of an aortic or iliac aneurysm into the iliocaval venous axis. This is a rare complication of atheromatous aneurysm (less than 4% of ruptured aneurysms), often difficult to diagnose as the clinical presentation may be obscure. Although aortography is the reference diagnostic investigation, color Doppler ultrasonography enabled visualisation of the arteriovenous communication and provided an accurate diagnosis in one recent case.

[Subacute ischemia of the lower leg caused by a popliteal synovial cyst. Apropos of a case].

Based on the observation of a cyst compressing the popiteal artery, the authors discuss the characteristic clinical picture and radiology of this benign neoformation. They emphasize two possible causes: cystic degeneration of the arterial median or a cyst of articular derivation. Histological data from this observation supports the second hypothesis.