Revise the basic anatomy of the orbit. Review spectrum of cross-sectional imaging findings of various benign, malignant, infective, inflammatory and vascular pathologies involving the orbit. Elaborate multimodality diagnostic approach in different orbital pathologies.

Orbit is an anatomically complex region enclosing the globe, extraocular muscles, retro-orbital fat, neurovascular structures, lacrimal gland and connective tissues. It is a small anatomical area with little free space and therefore mass lesionsusually result in proptosis of the globe and can adversely affect visual acuity by causing pressure over the optic nerve or extraocular muscles. Anatomy: Contents of the orbit include:[Fig. 1,2] Globe with its contents Extraocular muscles (Superior, Inferior, Medial and Lateral Recti and Superior and inferior Oblique Muscles) Cranial nerves Autonomic nerves...

We wish to share the cross-sectional imaging features of various orbitalpathologies that we encountered at our radiology department. A 16-slicer multidetector Toshiba CT scanner was used to perform the CT scans. Additional 3D images and multiplanar reconstructions were acquired. MRI was performed on 1.5 Tesla Achieva Nova Philips scanner. Cases were followed till the histopathological results were obtained. Orbital pathologies can be grossly devided into various etiologies: Trauma Infection / inflammation Vascular Neoplasia TRAUMA: INTRAOCULAR FOREIGN BODY:CT is the most sensitive and prompt technique for...

A radiologist may encounter a wide variety of orbital pathologies with a long list of differentials.Good understanding of the detailed anatomy of the orbits and its contents is essential to evaluate these pathologies. Furthermore, athorough knowledge of the most common lesions, their typical clinicalpresentations, radiological appearances and key imaging features help distinguish similar looking lesions and aids in reaching aconfident radiological diagnosis.

Dr. Samar Hamid Registrar Department of Radiology Jinnah Postgraduate Medical Center, Karachi Dr. Shumaila Arooj MBBS, FCPS, Fellowship in Neuroradiology Department of Radiology Jinnah Postgraduate Medical Center, Karachi Dr. Abdul Waheed Postgraduate Resident FCPS(II) Department of Radiology Jinnah Postgraduate Medical Center, Karachi Dr. Naveed Ahmed MBBS, FCPS, FRCR Department of Radiology and Cyberknife Robitic Radiosurgery Jinnah Postgraduate Medical Center, Karachi Prof. Tariq Mahmood MBBS, DMRD, FCPS Head of Radiology, Oncology and Cyberknife Robitic Radiosurgery Jinnah Postgraduate Medical Center, Karachi

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