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International Journal of Clinical Medicine and Bioengineering
Frequency: Quarterly Published by lIKll

Open Access Research Paper
 IJCMB 2022/03
Vol.2, Iss.1 : 16-20

Pulsatile Tinnitus Caused by Highly Vascularized Fibrous Dysplasia of Temporal Bone with Centrally Located Fibrous Cyst

Yue-Lin Hsieh1 and Wuqing Wang1*

11. Department of Otology and Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai, China. 2. NHC Key Laboratory of Hearing Medicine, Shanghai, China

Received:N/A; Revised:N/A; Accepted:N/A; Published:March 30, 2022
To date, the management and mechanism of pulsatile tinnitus (PT) caused by fibrous dysplasia (FD) of the temporal bone have not been discussed in detail. Therefore, this study is carried out to introduce PT secondary to monostotic temporal bone FD with cystic and lytic development in simultaneity complicated by the expansile bone lesion compressing over the sigmoid sinus. A 46-year-old female patient diagnosed with FD presented with severe persistent PT seeking medical assistance. Radiologic modalities displayed a 74.3 cm3 monostotic FD with a presumably high-vascularity lytic change of the bone lesion located in the posterior portion of the mastoid cavity. The patient’s PT was non-pulse-synchronous and was irrelevant to the intracranial blood flow revealed by ultrasonographic examination. A subtotal petrosectomy was performed after a meticulous preoperative assessment. During surgery, an unprecedented elastic cystic structure with three pedicles filled with vascular fluid was appreciated at the center of the FD lesion. PT was resolved after the removal of 90.8% of the total volume of the highly vascularized low-bone mineral density fibro-osseous tissues and the fibrous cyst. There were no PT reoccurrence and no postoperative complications during a two-month follow-up. Albeit rarely encountered, caution is required as PT secondary to FD is highly associated with the vascularity of the bone lesion.

Keywords:  Pulsatile Tinnitus, Fibrous Dysplasia, Cyst, Mastoid, Temporal Bone

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Citation:Hsieh, Y.L.; Wang, W.Pulsatile Tinnitus Caused by Highly Vascularized Fibrous Dysplasia of Temporal Bone with Centrally Located Fibrous Cyst. International Journal of Clinical Medicine and Bioengineering 2022, 2, 16-20.

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Copyright: © 2022  The Author(s). Published with license by IIKII, Singapore. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.