CT and MR imaging findings of periorbital lipogranuloma developing after endoscopic sinus surgery.
Periorbital lipogranuloma is a rare complication after ESS and presently lacks specific imaging reports. The purpose of this study was to describe the CT and MR imaging features of periorbital lipogranuloma. We retrospectively reviewed 9 patients with histology-confirmed periorbital lipogranuloma. All 9 patients underwent CT and MR imaging. Five lipogranulomas were located in the right eyelid and 4 in the left eyelid, which extended into the extraconal space to some degree. The lesions displayed an irregular shape and had an ill-defined margin. Multiple, specked, or nodular foci containing fat were scattered within these lesions. The lesions demonstrated moderate heterogeneous contrast enhancement on contrast-enhanced MR imaging. The TICs showed a persistent pattern (type I) in 6 patients undergoing DCE MR imaging. Thus, an ill-defined, irregular-shaped periorbital mass with multiple foci containing fat, combined with an ESS history, can help to accurately diagnose this entity.
Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China. cjr.yangbentao@vip.163.com
B T
BT
Yang
Y J
YJ
Liu
Y Z
YZ
Wang
X Y
XY
Wang
Z C
ZC
Wang
D000293:Adolescent; D000328:Adult; D004724:Endoscopy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D016727:Orbital Pseudotumor / Q000175:diagnosis* / Q000209:etiology*; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult