Radiology corner. Answer to last month's radiology case (#43) and image: Mycobacterium xenopi found incidentally on MRI of the cervical spine.

The authors present a case of a 44 year old healthy pregnant (with twins) female diagnosed with Mycobacterium xenopi in her lung. A mass was incidentally noted in the right upper apex on an MRI ordered to evaluate a subluxation seen in her cervical spine appreciated on plain radiography. Mycobacterium xenopi is uncommon, especially in immunocompetent patients. The patient did have a fractured ankle while pregnant. This case highlights importance of recognition of findings included in the field of view of an exam, even if not directly related to the study region of interest; in this case a cervical spine MRI with a positive finding within the lung apex.