Arterial malformations are abnormal connections between arteries and other blood vessels, which can disrupt normal blood flow. These malformations can occur in various parts of the body and may lead to complications such as bleeding or reduced oxygen supply to tissues. There are different types of arterial malformations, including arteriovenous malformations (AVMs) and arterial fistulas. Diagnosis often involves imaging techniques like MRI or CT scans, and treatment options may include surgery or endovascular procedures to correct the abnormal connections and restore normal blood circulation.