Table of Contents
Definition / general | Radiology images | Case reports | Treatment | Gross images | Microscopic (histologic) images | Differential diagnosisCite this page: Metastases to bone. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/bonemetstobone.html. Accessed July 14th, 2017.
Definition / general
- Most common malignant bone tumor is metastatic carcinoma
- In adults, 80% from prostate, breast, kidney, lung or thyroid
- In children, from neuroblastoma, Wilm tumor, osteosarcoma, Ewing / PNET or rhabdomyosarcoma
- Intraspinal seeding may occur along Batson’s plexus of veins
- Positive isotope bone scans (versus myeloma)
- Sarcomatoid carcinoma: consider if patient 60+ years with spindling bone malignancy; cells usually plumper than bone sarcomas and accompanied by carcinoma; renal cell carcinoma is most common primary site
- Common sites: axial skeleton, proximal femur, proximal humerus; usually marrow; very rare to be distal to elbow or knee
- Solitary metastases: kidney, thyroid
- Small bones of hands and feet: colon, lung, kidney
- Blastic lesions: prostate, carcinoid tumor, neuroendocrine tumors
Radiology images
Images hosted on PathOut server:
Case reports
- 37 year old man with spinal cord compression (Arch Pathol Lab Med 2003;127:887)
- 63 year old woman with metastatic basal cell carcinoma to vertebrae in nevoid basal cell carcinoma syndrome (Arch Pathol Lab Med 2004;128:819)
Treatment
- Radiation therapy for pain relief and to prevent fracture of weight bearing bones
Gross images
Microscopic (histologic) images
Images hosted on PathOut server:
Differential diagnosis
- Myeloma: negative isotope bone scan, monoclonal protein in serum or urine




















