From a Common Symptom to a Rare Diagnosis: A Case Report of Metastatic Solitary Fibrous Tumors.

Low back pain is one of the most common reasons for medical appointments in primary care. Although mostly benign and self-limited, it requires careful evaluation in order to identify serious underlying conditions.  Solitary fibrous tumors (SFTs) are rare fibroblastic mesenchymal neoplasms with low metastatic potential that can be present anywhere in the body, with nonspecific associated symptoms.