Globally, colorectal cancer is the third commonest cause ofcancer death in men since 1975. In the developed countries it
is now the second most common cancer after lung in menand the 1990 age-standardized incidence rates range from
25.3 per 100,000 (Eastern Europe) to 45.8 per 100,000(Australia)[12].In India, although the incidence rate of colorectal cancer isvery low, and rectal cancer remains more common, asignificant increase in its incidence has been reported for
both men and women over the last two decades. The ageadjusted annual incidence rates (AAR) of colorectal cancers
per 100,000 persons during the year 2004-05/ 2005-06 in thevarious population based cancer registries operating under
Indian Council of Medical Research was found to range from1.5 to 6.9 and 2.5 to 7.4 amongst males and females in urban
areas respectively. Similarly, in the rural areas the rates were
1.6 and 2.4 and 1.1 to 1.3 amongst males and females
respectively [2]. The trend analysis for seven Population
Based Cancer Registries (PBCRs) of the country during
1968-72 to 1998-2002 was estimated as an annual percentage
change (APC) using relative difference between recent and
the earliest AARs. Out of the seven PBCRs an increasing
trend AAR in the colorectal cancer was observed in three
registries ranging from 0.63% to 1.8% and 0.11% to 0.69 %
in various registries amongst males and females respectively.
An estimated 35635 new cases of colorectal cancer occurred
in 2006, accounting to 3.9 per cent of all new cases of
cancer.
Globally, colorectal cancer is the third commonest cause ofcancer death in men since 1975. In the developed countries itis now the second most common cancer after lung in menand the 1990 age-standardized incidence rates range from25.3 per 100,000 (Eastern Europe) to 45.8 per 100,000(Australia)[12].In India, although the incidence rate of colorectal cancer isvery low, and rectal cancer remains more common, asignificant increase in its incidence has been reported forboth men and women over the last two decades. The ageadjusted annual incidence rates (AAR) of colorectal cancersper 100,000 persons during the year 2004-05/ 2005-06 in thevarious population based cancer registries operating underIndian Council of Medical Research was found to range from1.5 to 6.9 and 2.5 to 7.4 amongst males and females in urbanareas respectively. Similarly, in the rural areas the rates were1.6 and 2.4 and 1.1 to 1.3 amongst males and femalesrespectively [2]. The trend analysis for seven PopulationBased Cancer Registries (PBCRs) of the country during1968-72 to 1998-2002 was estimated as an annual percentagechange (APC) using relative difference between recent andthe earliest AARs. Out of the seven PBCRs an increasingtrend AAR in the colorectal cancer was observed in threeregistries ranging from 0.63% to 1.8% and 0.11% to 0.69 %in various registries amongst males and females respectively.An estimated 35635 new cases of colorectal cancer occurredin 2006, accounting to 3.9 per cent of all new cases ofcancer.
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