IMAGING FOR RESIDENTS – QUIZ |
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Ahead of print
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A man with posterior hip pain |
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Ting-Yu Lin1, Ke-Vin Chang2, Wei-Ting Wu3, Levent Özçakar4
1 Department of Physical Medicine and Rehabilitation, Lotung Poh-Ai Hospital, Lo-Hsu Medical Foundation, Inc., Lotung Poh-Ai Hospital, Yilan, Taiwan 2 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University; Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch; Center for Regional Anesthesia and Pain Medicine, Wang-Fang Hospital, Taipei Medical University, Taipei, Taiwan 3 Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University; Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei-Hu Branch, Taipei, Taiwan 4 Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
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Date of Submission | 17-Aug-2022 |
Date of Decision | 18-Sep-2022 |
Date of Acceptance | 26-Sep-2022 |
Date of Web Publication | 07-Dec-2022 |
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Section 1 – Quiz | |  |
Case | |  |
A 53-year-old male patient suffered from dull pain and intermittent numbness over his left buttock/thigh for the past 2 months. He denied back pain or subjective muscle weakness. He had an office job and did not have any recent trauma, sports participation, or prior local injury. Physical and neurological examination (including the range of motions, sensory, motor, and reflex testing) was unremarkable. Ultrasound examination was arranged to investigate the cause of unrelenting left posterior hip pain. What is your initial impression based on the ultrasound images [Figure 1]? | Figure 1: Ultrasound images of the posterior hip showed the left piriformis muscle (a) normal side (b)
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Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient has given his consent for his images and other clinical information to be reported in the journal. The patient understands that his name and initial will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
This work was funded by the National Taiwan University Hospital, Bei-Hu Branch; Ministry of Science and Technology (MOST 106-2314-B-002-180-MY3 and 109-2314-B-002-114-MY3); and the Taiwan Society of Ultrasound in Medicine.
Conflicts of interest
Dr. Ke-Vin Chang, an editorial board member at Journal of Medical Ultrasound, had no role in the peer review process of or decision to publish this article. The other authors declared no conflicts of interest in writing this paper.

Correspondence Address: Ke-Vin Chang, Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Bei Hu Branch and National Taiwan University College of Medicine, Taipei Taiwan
 Source of Support: None, Conflict of Interest: None
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