title: Imaging of hydrogel episcleral buckle fragmentation as a late complication after retinal reattachment surgery.
abstract: Hydrogel encircling bands were introduced in the early 1980s as a product that was superior to bands composed of silicone rubber or silicone sponge for the surgical treatment of retinal detachment. Late complications consisting of orbital swelling and diplopia requiring band removal began to be reported in the early 1990s. Pathologic studies of these expanded fragments of hydrogel material after removal showed in vivo hydrolysis with foreign body reaction and dystrophic calcification. We report the imaging findings in five patients in whom this late complication developed. Hydrogel fragmentation has a characteristic imaging appearance consisting of a circumferential orbital mass associated with rim enhancement. This appearance should prompt inquiries regarding previous scleral buckle procedures with hydrogel bands. Familiarity with this appearance will avoid misinterpretation and unwarranted biopsy before band removal.
authors: Department of Radiology, Mayo Clinic, Rochester, MN 55905, USA.
authors: J I
authors: JI
authors: Lane
authors: J G
authors: JG
authors: Randall
authors: N G
authors: NG
authors: Campeau
authors: P K
authors: PK
authors: Overland
authors: C A
authors: CA
authors: McCannel
authors: T A
authors: TA
authors: Matsko
mesh_terms: D000368:Aged; D002114:Calcinosis / Q000175:diagnosis; D020878:Device Removal; D003937:Diagnosis, Differential; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D005549:Foreign-Body Reaction / Q000175:diagnosis*; D006801:Humans; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis*; D012163:Retinal Detachment / Q000175:diagnosis / Q000601:surgery*; D012164:Retinal Diseases / Q000175:diagnosis*; D012591:Scleral Buckling
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate