A Large Mastoid Cholesterol Granuloma Eroding the Dura and Sigmoid SinusHui-Shan Hsieh1, Ming-Ying Zhuo1, Ta-Jen Lee1, Xiao-Hui Zhemg2 and Chung-Feng Hwang3*
- *Corresponding Author:
- Chung-Feng Hwang
Department of Otolaryngology
Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine
123 Ta-Pei Road, Niao-Sung District, Kaohsiung 833, Taiwan (R.O.C.)
Tel: +886-7-7317123 ext.2533
E-mail: [email protected]
Received date: February 28, 2014; Accepted date: March 22, 2014; Published date: March 24, 2014
Citation: Hsieh HS, Zhuo MY, Lee TJ, Zhemg XH, Hwang CF (2014) A Large Mastoid Cholesterol Granuloma Eroding the Dura and Sigmoid Sinus. J Cytol Histol 5:236. doi: 10.4172/2157-7099.1000236
Copyright: © 2014 Hsieh HS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Introduction: Large mastoid cholesterol granulomas, particularly aggressive ones, are rare. We present the first case of a mastoid cholesterol granuloma with a nonspecific clinical presentation, and aggressive behavior, destroying the petrous internal cortical plate, dura mater, and sigmoid sinus wall. Radiographic and histological examinations can help to distinguish such granulomas from others.
Case presentation: A 50-year-old male presented with left otalgia, left blood-stained otorrhea, and a left temporal headache radiating to the mastoid. The radiographic examination revealed a left-sided, soft-tissue mass extending into the posterior fossa and compressing the sigmoid sinus inward. The histopathological features were consistent with a cholesterol granuloma. He underwent a cortical mastoidectomy to explore the lesion and macroscopic complete resection was achieved.
Conclusion: This is the first case of a mastoid cholesterol granuloma eroding the dura and sigmoid sinus. This case illustrates the need to consider cholesterol granuloma in daily clinical practice. Such lesions can exhibit noncharacteristic features and have an aggressive nature.