http___hr.265health.com_cancer_bone-cancer_1016014448.html_1.xml
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background Bone cancer occurs when bone cells grow uncontrollably. Unlike normal cells, cancer cells do not stop reproducing after they have doubled 50-60 times. These abnormal cells form clumps of tissue, called tumors, inside bones. The first symptom of bone cancer is typically pain in the affected bone(s). Sometimes, a bump either on the bone or in the tissues surrounding the bone may be felt. Primary bone cancer, or cancer that starts in the bone cells, is rare. Fewer than 2,500 Americans are diagnosed with this type of cancer each year. Children are more likely to develop primary bone cancer than adults. Most cases of bone cancer occur when cancer from another part of the body, such as breast, prostate, or lung, has spread to bone cells. This is sometimes called metastatic bone cancer or secondary bone cancer. The most common types of bone cancer are osteosarcoma, chondrosarcoma, and Ewing's sarcoma. These cancers can be primary or secondary cancer. Osteosarcoma: Osteosarcoma, the most common type of bone cancer, primarily develops in growing bones, and it usually affects people between the ages of 10 and 25. This aggressive type of bone cancer often affects the arms and legs, particularly the knees and shoulders of children. In some cases, osteosarcoma spreads to the lungs. About 65% of people with osteosarcoma survive five years after diagnosis. Chondrosarcoma: Chondrosarcoma develops in the cartilage. It often affects the bones in the pelvis and hips. It is most common among people who are 50 years of age or older, and it is slightly more common in males than females. Chondrosarcoma is the second most common bone cancer, accounting for about 25% of all cancerous bone tumors. The five-year survival for the aggressive form of chondrosarcoma is about 30%, and the five-year survival rate for slow-growing tumors is about 90%. Ewing's sarcoma: Ewing's sarcoma develops in the nerve tissue in bone marrow of children who are 4-15 years old. It is very rare in people who are older than 30 years of age. Ewing's sarcoma often develops after a person undergoes treatment, such as radiation or chemotherapy, for another type of cancer. Ewing's sarcoma is the most aggressive bone cancer. It typically affects the middle of the long bones in the arms and legs. The three-year survival rate is about 65%, but this rate is much lower if the cancer has spread to the lungs or other parts of the body. Surgery is often the main treatment for bone cancer. In addition to having bone tumors surgically removed, patients may also undergo chemotherapy, and/or radiation therapy. In some cases, patients may need to undergo a surgical amputation, but this is performed less often today. Specific treatment options depend on the type of bone cancer, as well as its location, size, and stage. In general, the prognosis for patients with bone cancer is based on many factors, including the type of cancer, at what stage the cancer was discovered, and where the tumor is located. For instance, if the tumor is small and limited to a localized area, the patient's prognosis is generally better than if the cancer has spread to other parts of the body. Related Terms Amputation, biopsy, bone fractures, bone pain, bone scan, bone tumor, chemotherapy, chondrosarcoma, Ewing's sarcoma, metastasized bone cancer, needle biopsy, osteosarcoma, primary bone cancer, radiation, radiation therapy, radiotherapy, sarcoma, secondary bone cancer, surgical biopsy.
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tijelu ima više od 200 kostiju , a svaki pojedinac kosti ili skup kostiju u tijelu može biti pod utjecajem kosti cancer.However , postoji nekoliko uobičajenih tipova raka kostiju koji obično imaju tendenciju da se utječe na određene kosti u tijelu . Osteosarkom , koji je primarni štrajkovi djecu i mlađe punoljetne osobe , najčešće se nalazi u kostima koljena ili okolnim mjestima . Osteosarkom počinje razvijati u novom tkiva , zove osteoidni , u sve većem bones.A drugi zajednički vrste raka kostiju , Ewingov sarkom , opet prvenstveno pogađa djecu i mlade . Liječnici vjeruju Ewing sarkom razvija u nezrelog živčanog tkiva u kosti . Ewing sarkom prvenstveno pogađa kost u natkoljenice i pelvis.Approximately su 20 posto svih karcinoma kostiju naziva chondrosarcoma , koji obično nastaje u zdjelici, rebrima, ili bedro , iako se također mogu naći ispod koljena ili koljena . Kondrosarkom , koji prije svega utječe na odrasle osobe , obično počinje u hrskavici , iako se također može nastati u kosti ili duž površine kosti . Kondrosarkom prvenstveno cilja na odrasle osobe u dobi između 40 i 75 godina između . Rijetki slučajevi dijagnosticirana kod mladih ljudi nazivaju mezenhimnog - chondrosarcoma.Chordoma , maligni fibrozni histiocitoma - koji obično nastaje u nogama i rukama - i firbosarcoma također su uglavnom vide u odraslih osoba, a rijetko u djece čimbenici koji utječu na prognozu primarnog raka kostiju Postoji nekoliko čimbenika koji utječu na prognozu za primarnog raka kostiju . Lokalizirane raka kostiju općenito imaju bolju prognozu od metastatskog raka kostiju . Najvažniji faktori suvrsta i mjesto raka kostiju ,stadij bolesti , je libolest je na jednom mjestu i još mnogo , da li je metastazirao na druge web stranice ili druge dijelove tijela ;stupnja od raka ( koliko stanice odstupaju od normalne ,brzina kojom se stanice množe ) , a pacijentovo opće zdravlje i odgovor na treatment.Other važnih čimbenika su koliko dugopacijent imao simptome , uključujući umor i bol na mjestu raka , i koliko od raka može se ukloniti operacijom ili ubijeni od strane kemoterapije . 5 godina Survival cijene za lokaliziran primarnog raka Dok su stope preživljavanja razlikuju , napretku Bone je postignut u mnogome poboljšati stopu preživljavanja za najčešćih vrsta kosti cancer.For primjer , eksperimentalne terapije testirani u 2007 Holcombe E. Grier od Dana- Farber instituta za rak i Boston Dječje bolnice , pokazao da Ewing sarkom bolesnika s lokaliziranim kosti rak - Rak u jednom određenom mjestu - imala koliko stopi 72 posto za preživljavanje , što je od 61 posto, s prethodno stopi treatments.The preživljavanja za osteosarkomom može biti i do 70 posto na 75 posto za lokaliziran primarnog raka kostiju . dugoročni opstanak stopa za one s chondrosarcoma je obično između 50 posto i 75 posto . Survival Cijene za osnovnu raka kostiju koji je metastazirao Nakon primarni rak kostiju metastazira ostali dijelovi tijela , stope preživljavanja uvelike smanjiti . To se događa zato štorak se više ne može liječiti ili ukloniti uklanjanjem stanica tumora i raka unutar bone.Survival stope razlikuju značajno ovisno o tome , gdje se rak metastazira . Metastaze na živce i krvnih žila se mogu liječiti amputirati zahvaćeni udova . Metastaze na plućima ili prsima je daleko ozbiljniji i nosi relativno nisku stopu 5 - godišnje preživljavanje , koji se razlikuju ovisno o opsegu metastaza . Survival stope za srednje raka kostiju Srpski preživljavanja stope za sekundarne raka kostiju ovisi o stupnju metastaza na kosti , na drugim mjestima metastaza i vrsti primarnog raka . Općenito , raširene metastaze na kostima ima lošu prognozu i vrlo niske stope preživljavanja . Osim toga , metastaze na kostima često ima simptome koji nepovoljno utječu na svakodnevni život , uključujući bol u metastaze stranice i /ili povišenim razinama kalcija u krvi , što dovodi do simptoma uključujući deluzije , bubrežnih kamenaca ili čak i smrt . From:http://hr.265health.com/cancer/bone-cancer/1016014448.html