We present a rare case of a 13-year-old male patient from Eastern European population with complaints of pain, discomfort, swelling, and bruising in the left shoulder. After low-dose computed tomography angiography, a giant, segmental, arteriovenous hemangioma was detected. Several hypotheses have been proposed for the pathogenesis of pediatric hemangiomas, but the exact etiology of these lesions remains unclear. It is widely believed that females in the Caucasian population are most affected. Hemangiomas are more likely to be associated with developmental abnormalities and have typical behavior over time with devolution stage. Although benign, hemangiomas can cause serious and permanent damage, especially those located in depth, near bones, joint spaces, or parenchymal organs. The challenge for clinicians is to identify which hemangiomas need vigilant monitoring and / or surgery. Read the whole article here.