Want to take quizzes and track your credits?
A man in his 60s presented to the emergency department with a 3-week history of numbness of the right side of the forehead and cheek and severe right-sided ocular discomfort that was relentless and kept him awake at night. He had been seen 2 weeks previously with similar symptoms and was diagnosed as having blepharitis and discharged with instructions for eyelid hygiene. His symptoms failed to improve, and he visited his family physician the following week. His physician prescribed a course of amoxicillin and clavulanate potassium, but the symptoms remained.
Please finish quiz first before checking answer.
Read the answer below and download your certificate.
Read the discussion below and retake the quiz.
Space-occupying lesion of the right Meckel cave
C. Order contrast-enhanced magnetic resonance imaging of the brain
The patient’s unilateral neurologic signs indicated a pathologic process centered on the right trigeminal nerve, and the involvement of the ophthalmic and maxillary nerves, but not the mandibular nerve, localized the lesion to the Meckel cave (MC). The MC is a mouth-shaped cavity at the anterior aspect of the middle cranial fossa. It houses the trigeminal nerve root ganglion and ophthalmic (V1), maxillary (V2), and mandibular (V3) branches until their exit at separate foramina.1 Lesions within the MC may present with pain, paresthesia, or motor dysfunction of the trigeminal nerve or its individual branches.2
Sign in to take quiz and track your certificates
JN Learning™ from JAMA Network is your new home for CME and MOC from a source you trust. Earn AMA PRA Category 1 CME Credit™ from relevant articles, audio, and Clinical Challenge image quizzes, explore interactives and videos, and – depending on your specialty or state – have your MOC points automatically transferred to the relevant board. Learn more about CME
Corresponding Author: Jennifer C. Fan Gaskin, MBChB, MD, FRANZCO, Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne, Victoria 3002, Australia (firstname.lastname@example.org).
Published Online: September 7, 2017. doi:10.1001/jamaophthalmol.2017.2492
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
You currently have no searches saved.