Glomus tumor as a cause of coccydynia
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Glomus coccygeum is a network of glomus bodies located around pericoccygeal soft tissue. The question of whether it accounts for coccydynia has been debated. We report on a patient whose preoperative symptoms suggested the impression of glomus tumor of the coccyx; pain was relieved after removal of the lesion without coccygectomy. A 57-year-old woman was referred to us with a history of a pain in the coccygeal area lasting longer than 3 years. The patient complained of sharp pain whenever pressure was applied to the coccyx. Pain was aggravated by exposure to cold. MRI revealed a coccygeal lesion measuring 2 cm with a well-circumscribed margin. The lesion was excised without removal of any portion of the coccyx. The pathology report confirmed a glomus tumor, which was an identical finding to the conventional one of the subungual region. Ten months after surgery, she had no pain on the coccygeal region and no difficulty with sitting on a chair and in performing activities of daily living. Findings reported here suggest that although most glomus bodies are normal anatomical variants, development of a glomus tumor could occur in the coccygeal region and could be a cause of coccydynia.
KeywordsGlomus coccygeum Coccydynia Glomus tumor of the coccyx Glomus body of the coccyx
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