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KMID : 1037920210080020067
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Arthroscopy and Orthopedic Sports Medicine
2021 Volume.8 No. 2 p.67 ~ p.70
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Sciatic schwannoma presenting as deep gluteal syndrome: a case report
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Djaja Yoshi Pratama
Lee Jae-Sung
Ha Yong-Chan
Roh Young-Ho
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Abstract
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Cystic degeneration of a schwannoma of the sciatic nerve occurs very rarely, especially in small lesions; thus, it may pose a challenge in diagnosis. This report describes the case of a 58-year-old referred woman patient with a 1-year history of discomfort in the left gluteal region without any radicular symptoms. Magnetic resonance imaging revealed a 3.3-cm cystic mass located adjacent to the sciatic nerve, which raised suspicion of a paralabral cyst owing to the stalk-like structure connecting the mass and posterior hip labrum. Hip arthroscopy was performed for deep gluteal region exploration, revealing that the lesion tightly adhered to the sciatic nerve. Open microsurgery was then performed to remove the lesion. Postoperatively, the patient’s complaints were resolved, and neurological complications were not found. Histological examination corresponded to a benign schwannoma. Complications and recurrence were not observed at the 1-year follow-up. Benign schwannoma should be considered as a differential diagnosis for a purely cystic lesion around the sciatic nerve, and awareness thereof should be increased. A further diagnostic approach should be established preoperatively to determine the best course of treatment.
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KEYWORD
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Sciatic nerve, Schwannoma, Peripheral nerve sheath tumor, Paralabral cyst, Deep gluteal syndrome
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