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Juxtaneural ganglia arising from the hip joint: focus on magnetic resonance imaging findings and clinical manifestations

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Abstract

Objective

To present cases of juxtaneural ganglia arising from the hip with a discussion of the magnetic resonance imaging (MRI) findings, presenting symptoms, and possible treatment option.

Materials and methods

Two radiologists performed a consensus review of MRI scans obtained between January 2013 and March 2021 to identify patients with juxtaneural ganglia around the hip. A total of 11 patients with 11 juxtaneural ganglia were identified. Medical records and MRI findings were retrospectively reviewed.

Results

Eight patients had lesions involving the sciatic nerve, and three patients had lesions involving the obturator nerve. Sciatic ganglia arose from a paralabral cyst in the posteroinferior quadrant and continued through a narrow channel running along the posterior acetabulum, showing increased diameter in the sciatic foramen and intrapelvic portion. Obturator ganglia showed a J- or reverse J-shape on the coronal imaging plane and extended from a paralabral cyst in the anteroinferior quadrant via the obturator canal. Nine patients (9/11, 81.8%) had symptoms resembling those of lumbosacral radiculopathy. Four patients underwent arthroscopic surgery, and one patient underwent ultrasound-guided aspiration, all of whom showed partial improvement. Spontaneous decrease in the extent of the ganglion was observed in three patients (3/11, 27.3%).

Conclusion

This article describes rare cases of juxtaneural ganglia arising from the hip joint and involving the sciatic and obturator nerves. The lesions share similar MRI findings, and each type of cyst (sciatic or obturator ganglia) involves a specific labral quadrant.

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Authors and Affiliations

  1. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea

    Nari Shin, Hyun Su Kim, Ji Hyun Lee & So Yeon Cha

  2. Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea

    Min Jae Cha

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  1. Nari Shin
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  2. Hyun Su Kim
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Correspondence to Hyun Su Kim.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Approval from the institutional review board was obtained and in keeping with the policies for a retrospective review; informed consent was not required.

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Shin, N., Kim, H.S., Lee, J.H. et al. Juxtaneural ganglia arising from the hip joint: focus on magnetic resonance imaging findings and clinical manifestations. Skeletal Radiol 51, 1439–1452 (2022). https://doi.org/10.1007/s00256-022-03989-8

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  • DOI: https://doi.org/10.1007/s00256-022-03989-8

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