Colorectal Carcinoma In Situ Can Metastasize and Recur

Colorectal carcinoma in situ can metastasize to lymph nodes and recur, challenging previous assumptions. Among 1069 patients, 0.46% experienced regional lymph node metastasis or recurrence, with cases identified during or after primary surgery. Distant metastases were also observed, emphasizing the need for careful assessment at diagnosis. This study highlights the importance of recognizing potential metastasis and recurrence to ensure optimal oncological outcomes.