Fig. 2From: Laparoscopic surgery to treat leiomyosarcomas of the sigmoid colon:a case report and literature reviewMicroscopic and immunohistochemical findings. a Hematoxylin-eosin staining revealed spindle-shaped cells exhibiting significant nuclear atypia. The tumor was immunohistochemically positive for α-SMA (b), desmin (c), and Ki-67 (h), but negative for c-kit (d), CD34 (e), S-100 (f), and DOG-1 (g) (× 20)Back to article page