Osteolytic lesion

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. This softened area appears as a hole on X-ray scans due to decreased bone density, although many other diseases are associated with this symptom. Osteolytic lesions can cause pain, increased risk of bone fracture, and spinal cord compression. These lesions can be treated using bisphosphonates or radiation, though new solutions are being tested in clinical trials.

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