Fig. 5From: Transanal total mesorectal excision for a large leiomyosarcoma at the lower rectum: a case report and literature reviewSurgical specimen and microscopic findings: a submucosal tumor at the lower rectum. b Hematoxylin-eosin stain (*20) revealed that spindle cells were arranged in irregular bands. Immunohistochemical staining was positive for calponin (c) and alfa-SMA (d), and negative for c-kit (e)Back to article page