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The lesion may arise de novo or may arise secondarily within a pre-existing bone tumor, because the abnormal bone causes changes in hemodynamics. An aneurysmal bone cyst can arise from a pre-existing chondroblastoma, a chondromyxoid fibroma, an osteoblastoma, a giant cell tumor, or fibrous dysplasia. A giant cell tumor is the most common cause ...
Aneurysmal bone cysts are benign neoformations which can affect any bone. More than half occur in the metaphysis of long bones (especially femur and tibia ) and between 12 and 30% in the spine. They were described in 1893 by Van Arsdale, [ 9 ] who called these lesions "homerus ossifying haematoma".
A number of tumors have giant cells, but are not true benign giant-cell tumors. These include aneurysmal bone cyst, chondroblastoma, simple bone cyst, osteoid osteoma, osteoblastoma, osteosarcoma, giant-cell reparative granuloma, Giant-cell tumor of the tendon sheath and brown tumor of hyperparathyroidism. [citation needed]
The most common locations for many primary tumors, both benign and malignant include the distal femur and proximal tibia (around the knee joint). Examples of benign bone tumors include osteoma, osteoid osteoma, osteochondroma, osteoblastoma, enchondroma, giant cell tumor of bone and aneurysmal bone cyst. [citation needed]
A unicameral bone cyst, also known as a simple bone cyst, is a cavity filled with a yellow-colored fluid. [ 1 ] [ 3 ] It is considered to be benign since it does not spread beyond the bone. [ 4 ] Unicameral bone cysts can be classified into two categories: active and latent. [ 4 ]
Metaphyseal tumors or lesions include osteosarcoma, chondrosarcoma, fibrosarcoma, osteoblastoma, enchondroma, fibrous dysplasia, simple bone cyst, aneurysmal bone cyst, non-ossifying fibroma, and osteoid osteoma. [5] One of the clinical signs of rickets that doctors look for is cupping and fraying at the metaphyses when seen on X-ray.
2025 fitness trends are expected to include strength training, a holistic mind-body approach, more wearable tech, and AI-generated workouts, to name a few.
Aneurysmal bone cyst, a benign bone tumor with a radiographic cystic appearance. [13] Baker's cyst or popliteal cyst (behind the knee joint) Mucoid cyst (ganglion cysts of the digits) Stafne static bone cyst (an anatomic variant with radiographic cystic appearance in the posterior mandible) Subchondral cyst (cysts near the bony joints) [14]