MR findings of fibrodysplasia ossificans progressiva complicated by acute cord compression: Case report and literature review.

We report a case of fibrodysplasia ossificans progressive in a 34-year-old male who presented with bilateral lower-extremity numbness. This rare disease results in abnormal ossification of various muscles, tendons, and ligaments. In this case, there was ossification of the posterior longitudinal ligament and resultant thoracic spinal-cord compression. Recognizing the MR features of this disease and this serious complication is very important in the management of these complex patients.

Extraspinal findings on lumbar spine MR imaging.

Interpretation of radiologic studies requires vigilance on the part of the radiologist to identify findings and abnormalities outside the region of interest. In the case of routine lumbar spine MRI for low back pain, many extraspinal abnormalities can often be identified. Some of these findings may account for low back pain. Other findings are incidental, but may have significant clinical implications, and are important to recognize. We present twenty-four examples of incidental findings from lumbar spine MRI examinations. The findings involve various organ systems, covering a broad range of clinical urgency.