Concomitant treatment of ureteral calculi and ipsilateral pelvic sciatic nerve schwannoma with transperitoneal laparoscopic approach: A case report

Figure 2 Immunohistochemical staining and evaluation. A: The histopathological section from pelvic tumor showed typical characteristics of alternating Antoni B and Antoni A with spindle tumor cells arranged in palisade or whorl pattern (hematoxylin and eosin, × 100); B and C: Immunohistochemical detection showed diffuse strong S100 expression and sporadic Ki-67 expression (arrows) (× 100). a: Antoni A; b: Antoni B.