MR Imaging of Orbital Inflammatory Pseudotumors with Extraorbital Extension

• DOI: 10.3348/kjr.2005.6.2.82
• Publication Date: 2009-04-20T08:00:49Z
• Authors: Eun Ja Lee; So Lyung Jung; Bum Soo Kim; Kook Jin Ahn; Young Joo Kim; Ae Kyung Jung; Chan Sub Park; Soon-Young Song; Noh Hyuck Park; Mi Sung Kim
• Keywords: Infratemporal fossa; Orbit (dynamics); Superior orbital fissure; Foramen; Pterygopalatine fossa

To demonstrate a variety of MR imaging findings orbital inflammatory pseudotumors with extraorbital extension.We retrospectively reviewed the features five patients, who were diagnosed clinically and radiologically as having an pseudotumor extension.The types mass in apex (n = 3), diffuse form 2), myositis 1). The extension passed through superior fissure all cases, inferior two optic canal one case. lesions extended into following areas: cavernous sinus 4), middle cranial fossa Meckel's cave petrous clivus pterygopalatine infratemporal foramen rotundum 1), paranasal infraorbital On imaging, appeared isosignal intensity gray matter on T1-weighted images, low signal T2-weighted images showed marked enhancement post-gadoliniumdiethylene triamine pentaacetic acid (post-Gd-DTPA) T1-sequences. symptoms patients improved when they given high doses steroids. Three experienced recurrence.MR is useful for demonstrating presence extensions pseudotumors.