Tumors of the bone (also known as "Bone and<unk>  tumors") are generally defined as the neoplastic growth of tissue in the bone and<unk> . Abnormal growths found in the bone can be benign or malignant. Bone and<unk>  tumors may be classified according to the WHO histological classification system into 5 sub-types:<unk>  tumors, osteogenic tumors, fibrohistiocytic tumors, notochordal tumors, hematopoietic tumors, and miscellaneous tumors. In addition, bone and<unk>  tumors may be sub-classified according to tumor location into 4 subtypes: diaphysis, metaphysis, epiphysis, and ungrouped/others. "Primary bone tumors", which originate in bone or from bone-derived cells and tissues, and "secondary tumors" which originate in other sites and metastasize to the skeleton, is another nomenclature to classify bone tumors. Carcinomas of the prostate, breasts, lungs, thyroid, and kidneys are the carcinomas that most commonly metastasize to bone. Secondary malignant bone tumors are more common than primary bone cancers. Bone and<unk>  tumors are uncommon, they represent 0.2% of all neoplasms in general population. The prevalence of bone and<unk>  tumors is approximately 0.9 per 100,000 individuals. Bone and<unk>  tumors have a bimodal age distribution. These tumors are more frequent in children and adolescents, and older adults. Bone and<unk>  tumors are slightly more common among individuals of Caucasian race. The most common symptom of bone tumors is pain, which will gradually increase over time. The pain increases with the growth of the tumor. Additional symptoms may include fatigue, fever, weight loss, anemia, and/or sudden bone fractures. In some cases, bone tumors may be asymptomatic. Bone tumors may weaken the structure of the bone, causing pathologic fractures.
Bone or cartilage mass
Irregular bone
Abscess
Chronic wound
Liver mass
Corns & calluses
Chondroma causes
Cutaneous skin tags