A cyst refers to a closed sac where there is a distinct membrane with possible division when compared to the nearby tissue. One of the characteristics of a cyst is the formation of a “shell” or “capsule” which is abnormal when compared with the surrounding cells. The cyst can contain fluids, semi-solid material or air. It should be noted that a collection of a pus is known as an abscess and should not be referred to as a cyst. Once it has formed, it may resolve on its own or may be removed surgically. It is believed that cancer-related cysts are the body’s attempts as a defense mechanism for the body.
Once mutations occur, they may result in uncontrolled cellular division resulting in the formation of a tumor. The body then tries to encapsulate these cells to prevent division and growth of a tumor, which is known as a cyst. However, the cells can mutate further while gaining the ability of forming their own blood vessels which nourish them and play a crucial role in their growth and development. Once that occurs, the capsule loses its function and the tumor may proceed from being benign to invasive.
Type Of Cysts #1: Pilar Cyst
A pilar cyst is a cyst that is formed from a hair follicle and is most often seen on the scalp. Pilar cysts are usually mobile, smooth, and filled with keratin. Also known as a trichilemmal cyst, these cysts usually tend to develop in areas where there are high concentrations of hair follicles.
Therefore, approximately ninety percent of cases occur on the scalp where thirty percent of cases have a solitary cyst, while seventy percent are cases with multiple cysts. The treatment for a pilar cyst is surgery that can be performed under local anesthetic or a punch biopsy.