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  • Title: Young age is not a poor prognostic marker in colorectal cancer.
    Author: Chung YF, Eu KW, Machin D, Ho JM, Nyam DC, Leong AF, Ho YH, Seow-Choen F.
    Journal: Br J Surg; 1998 Sep; 85(9):1255-9. PubMed ID: 9752871.
    Abstract:
    BACKGROUND: There is still considerable controversy and debate regarding the features and prognosis of colorectal cancer in young patients. METHODS: One hundred and ten patients (5.1 per cent) under the age of 40 years with colorectal cancer (group Y; male: female ratio 48:62) were compared with 2064 patients with colorectal cancer aged 40 years or more (group O; 917 women, 1147 men). Mode of presentation, stage at diagnosis, tumour characteristics and survival were analysed. RESULTS: Predisposing malignant conditions and family history of colorectal cancer were present in 20.9 per cent of patients in group Y versus 2.2 per cent in group O (P < 0.001). Common chief complaints included change in bowel habits, bleeding from the rectum and a significantly higher incidence of abdominal pain in group Y. There was no difference in stage at presentation between the two groups (the proportion of Dukes stage A, B, C and 'D' lesions in group Y was 8.2, 24.5, 37.3 and 30.0 per cent respectively versus 10.5, 27.9, 33.4 and 28.1 per cent in group O). Tumour site and characteristics were similar in both groups. The incidence of mucinous/signet ring cell and poor grade tumours was 6.9 and 11.8 per cent respectively in group Y and 4.5 and 10.5 per cent in group O. With a mean follow-up of 31.8 months, the overall 5-year survival rate was 54.8 per cent in group Y and 54.1 per cent in group O. Comparing stage for stage, survival was not significantly different in the two groups. However, the adjusted hazard ratios of the age groups Y, M (40-59 years), S (60-79 years), and E (80 years and above) were 1.3, 1 (baseline for calculations), 1.4 and 2.4 respectively, suggesting an adverse outcome for patients in group Y compared with patients aged 40-59 years. CONCLUSION: This study revealed no difference in tumour characteristics and survival in patients with colorectal cancer aged less than 40 years compared with those aged above 40 years. However, a higher hazard ratio in the youngest group may connote a worse prognosis than that for those aged 40-59 years. A significant family history of colorectal cancer and predisposing conditions in the young warrants aggressive screening, surveillance and treatment of the underlying conditions. The detection of colorectal cancer in young patients should be no different from that in the old but demands a high index of suspicion.
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