Clival fibrous dysplasia in which short interval disease progression posed a diagnostic challenge in a skeletally mature patient: a case report.

Background: Fibrous dysplasia is an uncommon bone disorder in which medullary bone is replaced by disorganized fibro-osseous tissue. Fibrous dysplasia typically exhibits slow growth that stabilizes with skeletal maturity. We report a case in which rapid progression of a clival lesion otherwise typical for fibrous dysplasia in an adult male led to concern for a malignant rather than a benign lesion.

Agreement on grading of normal clivus using magnetic resonance imaging among radiologists.

Purpose: The present study was aimed to evaluate the agreement on grading normal clivus on MRI among radiologists.

Methods: A retrospective study included patients who underwent MRI brain during January 1, 2015 to October 31, 2019. Two hundred forty-four patients who had no marrow pathology on MRI were included and divided into 8 age groups by decades.