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Osteolytic lesion at the bottom of the radius, diagnosed by a darker section that indicates a loss of bone density. An osteolytic lesion (from the Greek words for "bone" (ὀστέον), and "to unbind" (λύειν)) is a softened section of a patient's bone formed as a symptom of specific diseases, including breast cancer and multiple myeloma.
Condensing osteitis, also known as focal sclerosing osteomyelitis, is a rare periapical inflammatory condition characterized by the formation of sclerotic bone near the roots of premolars and molars. This condition arises as a response to dental infections, such as periapical pulp inflammation or low-intensity trauma.
Occult osseous injuries may result from a direct blow to the bone by compressive forces of adjacent bones against one another or by traction forces during an avulsion injury. Lesions in the tibial plateau, hip, ankle, and wrist are often missed. In a tibial plateau fracture, any disruption of the posterior and anterior cortical rims of the ...
Vertebral hemangiomas are hamartomatous lesions, meaning that they arise from dysembryogenetic origin. They are formed from benign vasoformative neoplasms of endothelial cells that present as thin-walled vessels infiltrating the marrow, medullary cavity between bone trabeculae and are usually confined to the vertebral body. [11]
Bone metastasis, or osseous metastatic disease, is a category of cancer metastases that result from primary tumor invasions into bones. Bone-originating primary tumors such as osteosarcoma , chondrosarcoma , and Ewing sarcoma are rare; the most common bone tumor is a metastasis. [ 1 ]
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 ...
Shown is an osteochondroma surgically extracted from a ten-year-old patient. The bone is the cylindrical stalk at the bottom, about 1/2 inch long, the two diagonal growths are cartilage. This morphology is typical of a tibial bone spur. Osteochondromas are benign lesions and do not affect life expectancy. [13]
Osteolysis is an active resorption of bone matrix by osteoclasts and can be interpreted as the reverse of ossification.Although osteoclasts are active during the natural formation of healthy bone the term "osteolysis" specifically refers to a pathological process.