Behçet's disease involving the breast

Behçet's disease is a vasculitis of unknown origin that was traditionally defined by oral and genital ulcers and uveitis. We describe a case of a patient with a diagnosis of Behçet's syndrome who presented a palpable lesion in the right breast with inflammatory signs. X-ray findings posed a differential diagnosis between tumoral and inflammatory pathology. The pathological findings confirmed a small-vessel vasculitis. We found two reports of breast involvement by this disease in the literature. Our patient was studied by mammogram and sonogram which together with clinical history are important to prevent delay in diagnosis and unnecessary therapeutic procedures.