title: Water balloon-aided ultrasonography--application in the diagnosis of rectal cancer.
authors.forename: D
authors.initials: D
authors.lastname: Qu
authors.forename: F X
authors.initials: FX
authors.lastname: Zhou
authors.forename: H L
authors.initials: HL
authors.lastname: Liang
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods