Bone tumor
A bone tumor is a well - (benign) or malignant ( malignant) tumor of the bone.
Definition
The bone tumors can be fundamentally divided into two categories:
Osseous bone tumors
These tumors start from the osteoclasts or osteoblasts. Benign bone tumors grow slowly, displacing and move from no metastases.
- Osteoma, benign, occurring almost exclusively in the sinuses occurs when Gardner 's syndrome
- Enostom, also called " Kompaktainsel " or bone Iceland, accumulation cortical bone in the medullary cavity
- Osteoid osteoma: relatively frequent, small tumor on the bone edge
- Osteoblastoma: similar to osteoid osteoma, but larger and often in vertebrae
- Osteosarcoma: the most common malignant bone tumor with extremely aggressive growth and early metastasis
Cartilaginous tumors
- Osteochondroma or cartilaginous exostosis, Ekchondrom: most common benign bone tumor
- Chondroma (or enchondroma ): cartilaginous, often on hands and feet
- Chondroblastoma: rare in children at the terminal ( epiphyseal ) growth plates of long bones
- Chondromyxoides fibroma: semimalignant rare tumor
- Chondrosarcoma: cartilage surfaces starting, malignant
Connective tissue tumors
These primary tumors start from the connective tissue of the bone matrix. They are called Knochenfibrome.
- Non- ossifying fibroma or Nichtossifizierendes bone fibroma, usually in the metaphysis, may regress spontaneously, benign
- Ossifizierndes bone fibroma also Osteofibrom, mostly in the jaw bone
- Desmoplastic bone fibroma can occur anywhere and tends to recur, semi-malignant
- Knochenfibrosarkom, rare malignancy, this tumor histologically identical to the Weichteilfibrosarkomen
Histiocytic bone tumors
- Benign fibrous histiocytoma rare, the histiocytoma in soft tissue is more common
- Malignant fibrous histiocytoma
- Osteoclastoma also known as giant cell tumor of bone, the only addition to the primary chondroblastoma, epiphyseal, lytic bone tumor of the long bones may be semi-malignant, third-degree osteoclastomas are always sinister
Osteomyelogene tumors
These hazards arising from the bone marrow cavity tumors originate from either precursor cells of the plasma cell or undifferentiated.
- Plasmacytoma synonymous multiple myeloma, plasma cells originating from disease with involvement of the bone, malignant
- Ewing 's sarcoma: from the bone marrow space, starting, according to the WHO definition: PAS positive without fiber formation, malignant
Bone metastases
Similar bone tumor Erkankungen
- Juvenile ( solitary ) bone cyst: single cave formation with fluid accumulation
- Aneurysmal bone cyst: multiple cavity formation in long bones and flat bones such as pelvis and vertebrae
- Fibrous dysplasia or " Osteofibrosis deformans juvenilis Uehlinger ", " Jaffe - Lichtenstein syndrome "