The aneurysm is spherical.
An aneurysm is a nodular deformation caused by the expansion of part of the vessel wall. As the disease progresses, aneurysms are susceptible to rupture, which can be fatal. The greatest danger to life is caused by dissecting aneurysms of the aorta and peripheral arteries of the head and neck. Early signs of aneurysms are severe headaches, visual disturbances, dizziness, fainting, and spots before the eyes. Typical complaints include pain in the back, neck, upper limb, and jaw. Aneurysms are detected during examination of patients, ultrasound duplex scanning, MSCT, and MRI.