Comparative study for preoperative staging of rectal cancer

Abstract

A comparative study of preoperative evaluation of rectal cancer is presented. Sixty-eight patients with rectal cancer were examined digitally and by computerized tomography and transrectal ultrasound. Preoperative staging was compared with pathologic findings at surgery. Digital examination and transrectal ultrasound were accurate in 82.8 and 76.2 percent, respectively and were superior to CT, which was accurate in 65.5 percent of cases for assessment of rectal wall invasion. All three modes play a role in preoperative assessment, but digital examination and rectal ultrasound appear to be more effective.

Transrectal ultrasound and computed tomography in preoperative staging of lower rectal adenocarcinoma

“…For instance, with CT technique correct analysis of tumors confined to the rectal wall or with moderate perirectal spread has been questioned as this technique affords little possibility of identifying the different layers of the rectal wall [14-171. Our results showed that TRUS was clearly superior to CT in staging local tumor growth in the lower two thirds of the rectum. The high rate of prediction of growth beyond the rectal wall with ultrasound corresponds well with figures presented in other reports [15,17,18]. These findings indicate that ultrasound can be of importance in the identification of those tumors with perirectal growth for which radiotherapy could be suitable.…”

Transanal endoscopic microsurgery for carcinoma of the rectum

“…The limited ability to identify nodal involvement preoperatively is problematic. Techniques such as endorectal ultrasound and MRI using endorectal coils are among the most sensitive methods (70-90% accurate) for determining the preoperative staging of the tumor, and hence should probably be used routinely [25][26][27].…”

Selektion von Patienten mit Rektumtumoren zur lokalen Exzision aufgrund der pr�operativen Diagnostik

“…Karzinom waren die Ergebnisse für das CS II nicht zuverlässig. Waizer et al [28] gaben für Dukes-A-Karzinome eine vergleichbare Sensitivität der rektalen Untersuchung von 85,7% und Nicholls et al [20,21] …”