Soft tissue sarcoma (STS) most often begins in the arms and legs but can also occur in other body parts. Soft tissues include fat, muscle, fibrous tissue, blood vessels, lymph vessels, and nerves.

When Ido Simyoni was 15, doctors diagnosed him with fibrous dysplasia, a condition where scar-like tissue forms instead of bone and causes benign tumors.

Fibrous hamartomas represent a unique subset of benign soft tissue tumours, most notably occurring in infancy. These lesions are characterised by a disorganised proliferation of mature tissues ...

She says the only way to know if you have dense breasts is to get a mammogram. "Most breast tissue is like a combination of fatty replace tissue and fibrous tissue," Dr. Johnson says.