What is osteoid?
Osteoid is a chemical that the body uses to make bone. It is made by specialized cells called osteoblasts which are found inside bones. When viewed under the microscope, new osteoid looks blue but later turns pink as minerals such as calcium are added to make it stronger.
It is normal to find osteoid inside of bone. Osteoid can also be found inside non-bone tissue and when this happens it may be described as heterotopic ossification. Heterotopic ossification commonly develops after an injury, but it is often a normal finding in older adults.
Tumours that make osteoid
Both non-cancerous and cancerous tumour cells can also make osteoid.
Non-cancerous tumours that make osteoid include:
Cancerous tumours that make osteoid include:
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