Multiple ring enhancing lesions (MREL) in the brain can be caused by a variety of diseases including infections, inflammatory and neoplastic conditions. We present the case of a patient with new onset unilateral jerking movement of the arm who was found to have sixteen ring enhancing lesions (RELs) in the brain on MRI. Further workup revealed a primary small cell lung cancer. The differential diagnosis of multiple ring enhancing lesions is discussed. The astute clinician should be aware of this rare but important radiological finding.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.