What Are Vascular Lesions?

Saccular aneurysms are the most common and are easily identified because of the berrylike sacs on the veins or arteries. They are caused by weakness in the vessel wall layers. The sac itself grows from the intima and adventitia of an vessel. When this occurs abnormal hemodynamic pressure on the cerebral arteries causes rupture. Saccular aneurysm can be caused by infections, tumors, or drugs.

There are three main types of blood vessels: arteries, veins, and capillaries. Arteries are vessels that usually carry highly oxygenated blood away from the heart and to the rest of the body. (The pulmonary trunk and related arteries are exceptions, as they actually carry blood from the lungs toward the heart.) Because arteries must transport high volumes of blood being forcefully pumped out by the heart and must therefore withstand greater pressure, most have thick, muscular walls and are more flexible as well. Arterioles, smaller types of arteries with thinner walls, branch off of the arteries to carry blood to another type of vessel, called the capillary. Capillaries are the most abundant blood vessels in the body. Thinner and smaller than the other blood vessels, the role of capillaries is to exchange substances like water, gases, chemicals, nutrients, wastes, etc. with the tissues of the body. The third type of blood vessel is the vein. Although they are generally larger than the other blood vessels, veins tend to have thinner, less flexible walls, as they are not forced to deal with such high blood pressures. Venules (veins’ versions of arteries’ arterioles) connect the capillaries to the veins, which then transport blood back

neck, under arms, or inner thighs. Eventually these lumps would ooze pus and blood, signaling internal

They also have not been able to find a cause for cardiac angiosarcoma, but they have been able to at least figure out some factors that play a role in being diagnosed. Angiosarcomas can present in many different ways. It can look like skin infection, a bruise or even a cut that does not heal. It may have a violet color, and the deep seated tumors may go unnoticed until they begin to affect surrounding tissues and organs. (Tunstall).

Popped blood vessels are usually caused by trauma, malnutrition, certain medications and diseases. It is more common for older people to get popped blood vessels in foot. Because the skin is more prone to bruising due to loss of flexibility. They are also seen more in women than men. Younger people can form them as well. High blood pressure and diabetes is also a risk factor for getting these popped blood vessels.

Petechiae: Pinpoint flat round red spots under the skin surface caused by intradermal hemorrhage (bleeding into the skin). Petechiae are red because they contain red blood that has leaked from the capillaries into the skin. Petechiae are quite tiny (less than 3 millimeters in diameter) and do not blanch when pressed upon.

Small red bumps that appear suddenly on your skin are usually not moles. The common name for these is Cherry Angiomas. They are a signal that your body needs attention, but they are seldom cancerous. They’re usually a symptom of poor diet, too much sun, and stress or

Hemangioma or Strawberry mark is a growth that can form before birth or during infancy that is a collection of abnormal blood vessels. They are very common with more than 200,000 cases per year or 3% of people. It is still not clear what causes blood vessels to form and group together It can be found on the skin or internal organs, mainly found on face, scalp, chest or back. The cells multiply and makes the Hemangioma thicker causing it to swell. Hemangioma are a type of tumor but they are non-cancerous and cause little to no discomfort, this growth may block vision, breathing, and hearing but that is very rare.

Doctors believe xanthelasma shows up when the connection between certain cells inside your capillaries breaks. When that happens, cholesterol can seep out of the blood and into the skin area, where it forms those raised patches, says Adam Scheiner, MD, laser eyelid and facial cosmetic surgeon in Tampa, Florida.

The human body is a highly complex system of organs that operates efficiently at a cellular level to ensure proper functionality and longevity of the human race. However, even the slightest changes to its operation can lead to complications. In order to better understand the human body and how it works; an understanding of the diseases it is susceptible to is necessary. The cardiovascular system, in particular, is vulnerable to debilitating disease such as aneurysms, which is a ballooning of a blood vessel, or even an embolism (when any foreign body enters the blood stream). Blood vessels include arteries, capillaries and veins and therefore these events can occur anywhere in the body (i.e. the heart or the brain). There are different types of aneurysms including saccular, fusiform and pseudo-aneurysms. Saccular aneurysms only develop on part of the vessel wall and are spherical in shape. Fusiform aneurysms are ovoid in shape and develop over the entire vessel cross section. Pseudo-aneurysms are not true aneurysms but they occur as a result of a tear in the vessel wall thus collecting the blood pooled by extravascular tissue (Group). The exact cause of an aneurysm is not known but is correlated with certain previous existing conditions. Existing conditions that may have an effect on the development of an aneurysm are inherited predispositions to this disease, lifestyles, and high blood pressure. Some individuals are predisposed to developing aneurysms if their blood

Hemangioma is the most common non-cystic benign hepatic lesion. Depending on imaging findings, hepatic hemangiomas can be categorized as typical and atypical. Typical hemangiomas comprised of three distinct histological subtypes, including (i) the cavernous hemangioma, (ii) the capillary hemangioma and (iii) the sclerosed hemangioma (1). The atypical group includes various categories such as giant and heterogeneous large hemangiomas (2, 3).

These blisters usually just appear on uncovered skin, such as the face and hands, but can also be found anywhere on the body once they have taken root.

Blood vessels are the conduits leading to and from the heart transporting blood throughout the body (bluedoorlabs). The arteries carry blood away from the heart whereas the veins carry blood back to the heart. The capillaries allow exchange of ions, small molecules and fluids. The arteries and veins are composed of three layers known as the tunica intima, tunica media, and tunica externa. The tunica interna is a cell that lines with the blood vessels. The tunica media is the middle layer, it changes the diameter of the blood vessel, that process is known as vasomotion. Tunica externa is the outer layer, it consists of loose connective tissue.

Figure 41. Common hemangioma of infancy in a 9-month-old girl who presented with a right shoulder mass. Coronal unenhanced T1-weighted (a), STIR (b), and gadolinium-enhanced fat-suppressed T1-weighted (c) MR images show a well-defined, lobulated soft-tissue mass confined to the subcutaneous soft tissues. The mass is isointense relative to muscle on the unenhanced T1-weighted image, is hyperintense on the STIR image, and shows diffuse enhancement on the gadolinium-enhanced image. All three images demonstrate small, intralesional signal void foci due to high-flow vessels.quoted from(Navarro et al;2009).

Buergers disease, a rarely occurring disease, that occurs in the arteries and veins of the limbs. The blood vessels of the affected region will inflame and become swelled, thus resulting in blood clots (thrombi). Untreated, or ongoing Buergers Disease can cause significant