Objective: To report a case of sciatic endometriosis diagnosed by computerized tomography (CT)-guided biopsy in combination with CD10 immunohistochemical staining.
Design: Case report.
Setting: University hospital.
Patient(s): A 33-year-old Japanese woman complaining of right-sided sciatica.
Intervention(s): Transgluteal computerized tomography (CT)-guided needle biopsy of a mass in the course of the right sciatic nerve was conducted for a histologic diagnosis.
Main outcome measure(s): Histologic study with hematoxylin and eosin staining and CD10 immunohistochemical staining was performed.
Result(s): Computerized tomography-guided biopsy was performed without any complication. CD10 staining distinguished endometrial stromal cells.
Conclusion(s): Computerized tomography-guided biopsy followed by CD10 immunohistochemical staining is a minimally invasive procedure for accurate diagnosis of sciatic endometriosis.