Letter O

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OSTEOPHYTOSIS

A term used to describe the presence of many osteophytes.

OSTEOPOIKILOSIS

A condition with many bone islands (non cancerous growth) around joints. Usually does not cause pain.

OSTEOPOROSIS

Bone density is severely decreased compared to healthy individual.  High risk of fracture.

OSTEOSARCOMA

Cancer of the bone.

OSTEOSARCOMA OF THE MANDIBLE

A malignant tumor of the mandible.  Presents as a painful mass of the mandible.  Early diagnosis and surgery will lead to a high chance of survival.

OSTOMY

Putting a hole in the body to remove the contents inside the body part. For example, colostomy means draining stool from the colon to a bag outside the body. Nephrostomy means draining urine from the kidney to a bag outside the body.