Discuss multimodality imaging features of orbital masses in adults, including mass-like lesions Outline key imaging findings in orbital pathology that influence medical and surgical options for patient management and prognosis

Orbital masses may be benign or malignant. The patient’s age and location of the lesion helps to narrow the differential diagnosis. Additionally, orbital masses may be classified as primary, secondary or metastatic. Ophthalmologists rely on clinical exam including dilated fundoscopy and clinic-based investigations including optical coherence tomography and B-scan ultrasound. High resolution imaging is essential to delineate the extent of disease, as this cannot be directly visualized with fundoscopy, such as retrobulbar involvement, perineural invasion, bony erosion and metastases. Orbital imaging is important in surgical...

Thyroid Orbitopathy 57yo woman presented with intermittent horizontal and vertical diplopia for 1 year on a background of Graves and Hashimoto’s disease. She was a non-smoker and had not had radioiodine therapy. She experienced pain behind the globes and with eye movements. She had lid oedema, conjunctival injection and chemosis and elevated intraocular pressures. She had severe, active disease with the maximum Clinical Activity Score of 7/7(first visit). Her optic nerve function was intact. MR orbits in Fig. 2 demonstrated marked enlargement of the extraocular...

Orbital masses frequently require multidisciplinary management. Multimodality imaging can delineate retrobulbar disease, aggressive mass lesions and identify ‘don’t touch lesions’. The position of the lesion within the orbit (anterior/mid orbit/apical) as well as which quadrant it is in, its relationship and effect on surrounding structures and intrinsic characteristics assist with preoperative diagnosis and surgical planning. Imaging has a key role in diagnosis and management of orbital masses as it is pivotal in planning the surgical approach and treatment.

Corresponding author: Dr. Sandeep Bhuta MBBS, DMRD, DNB, FRANZCR Senior Neuroradiologist Director of Research / MRI Supervisor Dept.of Medical Imaging,1 Hospital Boulevard, Gold Coast University Hospital, Associate Professor, School of Medicine&Menzies Health Institute, GriffithUniversity Gold Coast, QLD,4215 Australia [email protected]

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