Bone metastasis: Difference between revisions
(Created page with "'''Bone metastases''' are far more frequent than primary bone tumors. Bones are the third most common site of metastasis, after the lung and liver. They are often multiple rather than solitary. The most frequent symptom of bone metastasis is strong bone pain and pathological fractures. == Etiology == These metastases often originate from: * Breast cancer * Lung cancer * Prostate cancer * ...") |
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Revision as of 14:38, 4 January 2024
Bone metastases are far more frequent than primary bone tumors. Bones are the third most common site of metastasis, after the lung and liver. They are often multiple rather than solitary.
The most frequent symptom of bone metastasis is strong bone pain and pathological fractures.
Etiology
These metastases often originate from:
Breast, lung and prostate account for 80% of cases.
Pathology
Metastases most frequently form osteolytic lesions (decreased bone density) of the bone, as does renal cell carcinoma and multiple myeloma. A notable exception is metastases from the prostate, which form osteoblastic lesions (increased bone density).
Diagnosis and evaluation
Radiography is low sensitivity for both lytic and blastic bone lesions, but it is quite specific. More than 50% of the trabecular bone must be destroyed for the lesion to be visible on radiography. CT and MRI have high sensitivity and specificity.
Bone scintigraphy and PET or PET/CT is very sensitive for bone lesions but is less specific than CT or MRI.