Epidemiology of cancer in Sarawak, East Malaysia.

A descriptive epidemiology of cancer in Sarawak, based on histopathology records in the Central Medical Laboratory, Kuching, Sarawsk, in 1981 and 1982 was presented. There were 8,219 patients from whom biopsies were taken and 485 from whom marrow biopsies were taken. Out of these, 1,326 were reported malignant. Most of the cases were from Kuching. There were slightly more males than females. The Chinese formed the majority of cases followed by the Sea Dayaks and Malays. The most common cancer sites among males were lymph nodes, nasopharynx, skin and stomach, while in the females the most common sites were the breast, cervix and lymph nodes. Among the Chinese the most common cancers were those of the nasopharynx in males, and breast in females. Among the Sea Dayaks, the most common cancers were those of the lymph nodes in males and cervix in females. Among the Malays, skin cancers were relatively common, and among the Land Dayaks nasopharyngeal cancers were common. Most of the patients were in the older age groups. The pattern of cancers has not changed much since 1966 and the findings of the present study are very similar to the series from the Institute of Medical Research, Kuala Lumpur, in 1969 to 1971.