BACKGROUND AND OBJECTIVES: To identify characteristics of recurrent colorectal cancer in terms of follow-up periods, that is, ≤5 years and >5 years after curative operations METHODS: This study enrolled 4,023 patients. Of them, 835 patients showed recurrence after primary curative resection for colorectal cancer. Recurrence occurred ≤5 years (n = 799) or >5 years (n = 36) after curative surgery. Variables and recurrence patterns were compared between the groups. RESULTS: Among the 835 patients who experienced recurrence, only 4.3% recurred >5 years after surgery. This group showed lower preoperative serum carcinoembryonic antigen levels, more tumors with expanding growth, well-differentiated histology, and no lymph node metastasis (all P < 0.05). In terms of haematogenous metastasis, lung or liver was the most prevalent site in patients who recurred after >5 years or ≤5 years, respectively (P = 0.005). In rectal cancer patients, recurrence patterns revealed the same results. In colon cancer patients, the liver was the most prevalent site in both groups. CONCLUSIONS: After 5 years of follow-up, routine surveillance for detecting other malignancies seems to be sufficient. However, the possibility of late (particularly late pulmonary) recurrence should be considered. Radiologic examination to detect pulmonary metastasis should be considered in the follow-up program.
BACKGROUND AND OBJECTIVES: To identify characteristics of recurrent colorectal cancer in terms of follow-up periods, that is, ≤5 years and >5 years after curative operations METHODS: This study enrolled 4,023 patients. Of them, 835 patients showed recurrence after primary curative resection for colorectal cancer. Recurrence occurred ≤5 years (n = 799) or >5 years (n = 36) after curative surgery. Variables and recurrence patterns were compared between the groups. RESULTS: Among the 835 patients who experienced recurrence, only 4.3% recurred >5 years after surgery. This group showed lower preoperative serum carcinoembryonic antigen levels, more tumors with expanding growth, well-differentiated histology, and no lymph node metastasis (all P < 0.05). In terms of haematogenous metastasis, lung or liver was the most prevalent site in patients who recurred after >5 years or ≤5 years, respectively (P = 0.005). In rectal cancerpatients, recurrence patterns revealed the same results. In colon cancerpatients, the liver was the most prevalent site in both groups. CONCLUSIONS: After 5 years of follow-up, routine surveillance for detecting other malignancies seems to be sufficient. However, the possibility of late (particularly late pulmonary) recurrence should be considered. Radiologic examination to detect pulmonary metastasis should be considered in the follow-up program.
Authors: Minna Räsänen; Monika Carpelan-Holmström; Harri Mustonen; Laura Renkonen-Sinisalo; Anna Lepistö Journal: Int J Colorectal Dis Date: 2015-03-22 Impact factor: 2.571
Authors: Avery S Walker; Eric K Johnson; Justin A Maykel; Alex Stojadinovic; Aviram Nissan; Bjorn Brucher; Bradley J Champagne; Scott R Steele Journal: J Cancer Date: 2014-03-16 Impact factor: 4.207
Authors: Corinne Daly; David R Urbach; Thérèse A Stukel; Paul C Nathan; Wayne Deitel; Lawrence F Paszat; Andrew S Wilton; Nancy N Baxter Journal: BMC Cancer Date: 2015-09-03 Impact factor: 4.430