-oma, -ome, -omatoid

1. A skin disease characterized by clusters of dilated blood vessels and by thickened skin, forming warty growths; especially, on the scrotum, fingers, and toes.
2. An intradermal cavernous hemangioma covered by a wartlike thickening of the horny layer of the epidermis. Also called telangiectatic wart.

1. The total complex of biotic communities occupying and characterizing a particular geographic area or zone.
2. A biotic community of plants and animals; specifically, such a community in a prehistoric period.
3. A biogeographical region or formation; a major regional ecological community characterized by distinctive life forms and principal plant (terrestrial biomes) or animal (marine biomes) species.
4. A climatically controlled group of plants and animals of a characteristic composition and distributed over a wide area; such as, tropical rain forest, tundra, temperate grassland, desert, savanna, mountain habitats, taiga (a northern coniferous forest zone, especially in Siberia, adjacent to tundra), and other northern coniferous forests, etc.
5. A major regional community of plants and animals with similar life forms and environmental conditions.

It is the largest geographical biotic unit, group, or mass; and is named after the dominant type of vegetation; such as, tropical rain forest, grassland, or coral reef.

6. A complex biotic community existing in a given region, produced by the interaction of climatic factors, living organisms, and substrate.

A community that has developed to take advantage of existing vegetation; such as, tundra, coniferous forest, or grassland.

A fibrous, encapsulated connective tissue tumor.

It is irregular in shape, slow in growth, and has a firm consistency. pressure or cysteic degeneration may cause pain.

Sometimes it occurs in the periosteum (dense fibrous membrane covering the surface of bones, except at their extremities). It may affect the jaws, occiput (back part of the head or skull), pelvis, vertebrae, ribs, long bones, or sternum

1. A group of eye diseases characterized by an increase in intraocular pressure which causes pathological changes in the optic disk and typical defects in the field of vision.
2. A common eye condition in which the fluid pressure inside the eyes rises because of slowed fluid drainage from the eye.
3. Etymology: from Greek, gleaming, pale green, bluish green, gray, light-blue-eyed, gray-eyed.

It can be corrected by the use of laser light to punch a hole in the iris to relieve the intraocular pressure within the eye. The procedure is painless and requires no anaesthesia.

If untreated, it may damage the optic nerve and other parts of the eye, causing the loss of vision or even blindness.

The elderly, African-Americans, and people with family histories of the disease are at greatest risk. There are no symptoms in the early stage of glaucoma.

Glaucoma is often called "the sneak thief of sight". Often, by the time the patient notices vision loss, glaucoma can only be halted, not reversed.

There are different types of glaucoma, including open-angle glaucoma and acute angle-closure glaucoma.

Open-angle glaucoma is the common adult-onset type of glaucoma. Acute angle-closure glaucoma is a less common form of glaucoma but one that can rapidly impair vision.

The treatment of glaucoma may include medication, surgery, or laser surgery. Eyedrops or pills alone can usually control glaucoma, although they cannot cure it.

Some drugs are designed to reduce pressure by slowing the flow of fluid into the eye, while others help to improve fluid drainage.

In laser surgery for glaucoma, a laser beam of light is focused on the part of the anterior chamber where the fluid leaves the eye.

This results in a series of small changes, making it easier for fluid to exit. Over time, the effect of laser surgery may wear off.

A brain tumor that begins in a glial cell in the brain or spinal cord.

Malignant gliomas are the most common primary tumors of the central nervous system. They are often resistant to treatment and carry a poor prognosis

A benign tumor of adipocytes (fat cells).

Lipomas are common in the skin and are found anywhere on the body. They may be surgically removed for cosmetic reasons.

1. A malignant tumor originating in a lymph node; such as, Hodgkin's disease or any of the range of cancers known as non-Hodgkin's lymphomas.
2. Any of various usually malignant tumors that arise in the lymph nodes or in other lymphoid tissue.
3. Any neoplastic disorder of lymphoid tissue; the term is often limited to the malignant lymphomas.
4. A tumor arising from any of the cellular elements of lymph nodes.

Lymphoma is a cancer of a class of cells called lymphocytes which are key players in the normal immune response.

This means that lymphoma, together with the leukemias and multiple myeloma, is unusual among cancers in that it represents a malignancy of the immune system; the very system of the body that is supposed to protect and defend our bodies from infection and, some believe, from cancer.

It is significant to know that the term lymphoma actually encompasses a group of diseases. This means that the best therapy for one person may be very different from the best therapy for someone else with a different form of lymphoma. The causes of lymphoma remains largely unknown.

Malignant the most common type of malignant bone cancer.

1. A malignant tumor that begins growing in connective tissue; such as, muscle, bone, fat, or cartilage.

Sarcomas may occur in any part of the body, and are typically fast-growing and quick to spread.

2. Etymology: from 1657, "fleshy excrescence", Medical Latin, from Greek sarkoma "fleshy substance" (Galen), from sarkoun, "to produce flesh, to grow fleshy"; from sarx, sarkos, "flesh".

The meaning "harmful tumor of the connective tissue" was first recorded in 1804.

1. An area of lost or depressed vision within the visual field, surrounded by an area of less depressed or of normal vision.
2. Loss of vision in a part of the visual field; a blind spot.
3. A permanent or temporary area of diminished sight in the field of vision.