A cyst is a sac-like pocket of tissue that contains fluid, air, or other substances. Cysts can grow almost anywhere in your body or on your skin.

A uterine myoma (myoma uteri) is a solid tumor made of fibrous tissue; hence it is often called a ‘fibroid’ tumor. Myomas vary in size and number, are most often slow-growing and usually cause no symptoms. Myomas that do not produce symptoms do not need to be treated. Approximately 25% of myomas will cause symptoms and need medical treatment

Macular degeneration, or age-related macular degeneration (AMD), is a leading cause of vision loss in Americans 60 and older. It is a disease that destroys your sharp, central vision. You need central vision to see objects clearly and to do tasks such as reading and driving.

Benign prostatic hyperplasia (BPH), also called benign enlargement of the prostate (BEP), adenofibromyomatous hyperplasia and benign prostatic hypertrophy, is an increase in size of the prostate.

A simple goiter is an enlargement of the thyroid gland. It is usually not cancer.

Low sperm count means that the fluid (semen) you ejaculate during an orgasm contains fewer sperm than normal. A low sperm count is also called oligospermia (ol-ih-go-SPUR-me-uh). A complete absence of sperm is called azoospermia. Your sperm count is considered lower than normal if you have fewer than 15 million sperm per milliliter of semen.

Beriberi is a disease in which the body does not have enough thiamine (vitamin B1).

Glaucoma is a group of diseases that can damage the eye’s optic nerve. It is a leading cause of blindness in the United States. It usually happens when the fluid pressure inside the eyes slowly rises, damaging the optic nerve. Often there are no symptoms at first. Without treatment, people with glaucoma will slowly lose their peripheral, or side vision. They seem to be looking through a tunnel. Over time, straight-ahead vision may decrease until no vision remains.

Lipid is the scientific term for fats in the blood. At proper levels, lipids perform important functions in your body, but can cause health problems if they are present in excess. The term hyperlipidemia means high lipid levels. Hyperlipidemia includes several conditions, but it usually means that you have high cholesterol and high triglyceride levels.

Leg weakness can occur as part of a generalized feeling of weakness all over your body, or it may develop in one or both legs.

Gingivitis, also generally called gum disease or periodontal disease, begins with bacterial growth in your mouth and may end — if not properly treated — with tooth loss due to destruction of the tissue that surrounds your teeth.

Diverticulosis occurs when small defects in the muscle of the wall of the large intestine or colon allow small pockets or pouches (diverticula) to form.