Diseases of the Neck

Kangaroo Internal Anatomy
Fig. 13.23 The axial T2-weighted MR image demonstrates a large mass at the skull base that has invaded and filled up most of the orbit. It presents with a high signal and a nodular structure—a typical pattern for a plexiform neurofibroma.

Plexiform neurofibroma: Finally, a plexiform neurofibroma of the orbit is one of the hallmarks of neurofibromatosis (Fig. 13.23). It manifests during late childhood and frequently also involves the eyelids and the other neighboring soft tissues.

• Diagnosis: On the basis of clinical history and the MR images, Paul and Joey favor typical endocrine ophthalmopathy as the diagnosis. They are right. Radiation therapy may start now.

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