Assessment of depth of invasion in rectal cancer by endosonography.

摘要: Pre-operative staging of rectal cancer could be significantly improved by the imaging method endorectal ultrasound. Using high-frequency transducers a complex wall pattern was demonstrated. Depending on in vitro or vivo examinations and US probes different frequency current interpretation is not uniform. Agreement exists muscularis propria which clinical importance. Objective precise criteria for lymph node differentiation have yet to worked out.