Beware Overcalling Spinal Metastases in Patients with Known Primary Malignancy on Magnetic Resonance Imaging.

Dedicated bone tumor MRI protocols of the spine are recommended that afford familiarity include T1-weighted sequences that are of most benefit when assessing marrow infiltration. I Purpose or Learning Objective: i (1) To understand the overall frequency of unexpected musculoskeletal (MSK) findings in retrospective reviews; (2) to describe the importance of a correct diagnosis of incidental bone lesion versus marrow infiltration, especially in a setting of known primary malignancy; (3) to introduce and improve characterization of spinal tumor mimics, such as focal marrow hyperplasia (FNMH), Schmorl's node, hemangioma, enostosis, and benign notochordal cell tumors (BNCTs); and (4) to discuss image optimization, novel magnetic resonance imaging (MRI) techniques, and the use of auxiliary imaging modalities. [Extracted from the article]