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INCIDENCE OF COLORECTAL CANCER IN SRI LANKA: ANALYSIS OF THE CANCER REGISTRY DATA AND COMPARISON WITH OTHER SOUTH ASIAN POPULATIONS
Dakshitha Wickramasinghe*1, Nilanka Wickramasinghe2, Nandadeva Samarasekera1
1Department of Surgery, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka; 2National Hospital of Sri Lanka, Colombo, Sri Lanka
Background/Aims
The objectives of this study were to report the incidence of colorectal carcinoma (CRC) in Sri Lanka (SL) and to compare these values with other cancer registry data of the region and with migrant populations.
Methods
We compared the data published by the National Cancer Control Program over the last 2 decades with data from the National Cancer Registry Programme of the Indian Council of Medical Research and Karachi cancer registry. SEERstat was used to analyse the Surveillance, Epidemiology, and End Results database to analyse data on Indian migrant population.
Results and discussion
CRC was the 4th and 6th commonest cancer among males and females in SL, respectively. The incidence of CRC rose with age in both sexes, and reaches the peak in the 60-65 year age group. There was a disproportionately higher number of CRC in the Sinhalese population (Chi square test, p<0.00001). The commonest type of CRC in SL was Adenocarcinoma, NOS (n=643, 78.9%) followed by cystic, mucinous and serous neoplasm for both colon and rectum.
The highest incidence of colorectal cancer was seen in Sri Lanka. However, this increase seems to be primarily due to a higher incidence of colon cancer. All migrant populations had higher incidence of CRC than the population in their country of origin.
Conclusions.
The incidence of CRC was higher in Sri Lanka compared to other regional countries. However, the distribution among age groups in Sri Lanka was comparable. Persons of Sinhalese ethnicity have a higher risk of developing CRC.
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