Possible Involvement of Hyperactive Internal Anal Sphincter in Adult Megacolon

Hiroyuki Kayaba^1*, Hiroaki Yoshino², Mayako Morii², Masamichi Itoga¹ and Norihiro Saito¹

¹Department of Clinical Laboratory, Hirosaki University Graduate School of Medicine, Aomori, Japan

²Department of Surgery and Pediatric Surgery, Akita University Hospital, Akita, Japan

^*Corresponding Author: Hiroyuki Kayaba, Department of Clinical Laboratory, Hirosaki University Graduate School of Medicine, Japan, Tel: +81-172-39-5123, Fax: +81-172-39-5123 Email: