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Indwelling epidural catheter placement for prolonged drug delivery or is commonplace. Epidural catheter placement leading to a subsequent epidural mass is infrequently symptomatic and thus not often sought after or uncovered. Such masses can mimic lesions causing tumor, infection, and inflammation, and when found, the etiology of granuloma formation is unclear. This article describes a case of a benign epidural granuloma masquerading as an epidural tumor thought to be caused by epidural catheter placement for postoperative total hip replacement pain control. After symptoms of mechanical and radiculopathic pain arose, the patient underwent an open biopsy, spinal decompression, and intradural exploration as an MRI evaluation identified a mass in the spinal canal. Pathologic examination identified a benign fibrous granuloma. At 36-month follow-up, there was no evidence of symptom or tumor recurrence.

Indwelling epidural catheter placement for prolonged drug delivery or is commonplace. Epidural catheter placement leading to a subsequent epidural mass is infrequently symptomatic and thus not often sought after or uncovered. Such masses can mimic lesions causing tumor, infection, and inflammation, and when found, the etiology of granuloma formation is unclear. This article describes a case of a benign epidural granuloma masquerading as an epidural tumor thought to be caused by epidural catheter placement for postoperative total hip replacement pain control. After symptoms of mechanical and radiculopathic pain arose, the patient underwent an open biopsy, spinal decompression, and intradural exploration as an MRI evaluation identified a mass in the spinal canal. Pathologic examination identified a benign fibrous granuloma. At 36-month follow-up, there was no evidence of symptom or tumor recurrence.