Houda El Benna

Colorectal carcinoma (CRC) has increased in incidence over the past 20 years worldwide and in Tunisia [1,2]. A recent study concerning the center of Tunisia, evaluated the incidence of CRC during the period, 1993–2007, and showed that it increased by +2.6% and +5.3% for females and males [1]. After curative surgery, CRC remains a disease with a high relapse risk; 50% of patients would develop metastases, mostly in the liver (33%) and lungs in 22% [3].

Aim: We aimed to identify a cutoff value of tumor size (TuS) correlated to prognosis of stage II and III colorectal cancer and to evaluate the prognostic significance. Patients & methods: We retrospectively analyzed 257 patients treated for stage II–III colorectal cancer between 2003 and 2014. We used receiver-operating characteristic to evaluate TuS performance accuracy to predict survival. We identified a cutoff value.