Bone TumorBone tumors develop when cells within a bone divide uncontrollably, forming a lump or mass of abnormal tissue.Most bone tumors are benign (not cancerous). Benign tumors are usually not life-threatening and, in most cases, will not sprea

Giant Cell Tumor of BoneA giant cell tumor of bone is a type of benign (noncancerous) tumor that has a wide range of behaviors. These tumors typically grow at the ends of the body's long bones. Most often, they appear at the lower end of the femur

HemangiomaA hemangioma is a benign (noncancerous) tumor made up of blood vessels. There are many types of hemangiomas, and they can occur throughout the body, including in skin, muscle, bone, and internal organs.Most hemangiomas occur on the surf

Chondromyxoid FibromaChondromyxoid fibroma (CMF) is one of the rarest of bone tumors, accounting for less than 1% of all bone tumors.It is a benign (noncancerous) tumor that most often develops in older children and young adults under 30 years of

Unicameral Bone CystsA unicameral, or simple, bone cyst is a common, benign (noncancerous) bone tumor that primarily occurs in children and adolescents.Unicameral bone cysts (UBC) are cavities within bone that are filled with fluid. Although they

Fibrous DysplasiaFibrous dysplasia is a benign (noncancerous) bone condition in which abnormal fibrous tissue develops in place of normal bone. As these areas of fibrous tissue grow and expand over time, they can weaken the bone — causing it to fra

LipomaA lipoma is a benign (noncancerous) tumor made up of fat tissue. The typical lipoma is a small, soft, rubbery lump located just beneath the skin. They are usually painless and are most often found on the upper back, shoulders, arms, buttocks,

Vitamin DFact Sheet for Health ProfessionalsWoman shopping for dietary supplementsHave a question?Ask ODS: ods.od.nih.gov/contactTable of ContentsIntroductionReference IntakesSources of Vitamin DVitamin D Intakes and StatusVitamin D Defici