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Sciatic endometriosis diagnosed by computerized tomography-guided biopsy and CD10 immunohistochemical staining.

Koga K, Osuga Y, Harada M, Hirota Y, Yamada H, Akahane M, Kugu K, Taketani Y

Department of Obstetrics and Gynecology, University of Tokyo, Tokyo, Japan.

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.

Published 8 November 2005 in Fertil Steril, 84(5): 1508.
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