Spontaneous rupture of breast pseudoaneurysm: a rare case.

Ehlers-Danlos syndrome (EDS) type IV is a hereditary autosomal dominant disease associated with skin and vascular fragility, hyperextensibility and joint hypermobility. Spontaneous arterial rupture is one of its higher-risk features.The authors describe a case of a woman with EDS type IV who presented with a spontaneous breast haematoma associated with a pseudoaneurysm of a branch of the left internal mammary artery. The patient underwent a minimally invasive endovascular approach that was uneventful. However, 6 months later, she presented in the emergency room with a similar episode on the contralateral breast. There were no signs of active bleeding, and she stayed under surveillance. Nine months later, she was asymptomatic.Aneurysms of branches of the internal mammary artery are rare and prone to rupture. Early diagnosis and treatment are imperative, and this case demonstrates that an endovascular approach is a safe treatment option.