The structure of synchronous multiple primary colorectal cancer

Abstract

One of the problems of modern oncology is the lack of timely diagnosis of synchronous forms of colorectal cancer. Therefore, the aim of this study was to evaluate the structure of synchronous primary multiple forms of colorectal cancer. Methods: We analyzed the results of colorectal cancer diagnostics (n = 583) in the period 2010–2019. We did not include patients with metachronous colorectal cancer in the study. The average age of all patients was 71.6 ± 7.4 years. There were 1.5 times more men than women. Results: Synchronous colorectal cancer was detected in 171 (29.3%) patients. With synchronous primary multiple forms of colorectal cancer, 2 tumors were diagnosed in every second patient. In synchronous colorectal cancer, tumors were localized twice as often in the colon (n = 118) than in the rectum (n = 53). Conclusions: In patients with colorectal cancer, synchronous tumors occur in every third case. Synchronous colorectal cancer is more common in men. In the majority of patients (59.1%), synchronous colorectal cancer was detected within 6 months after imaging of the primary tumor.