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Indian Journal of Cancer, Vol. 46, No. 4, October-December, 2009, pp. 351-352 Letter To Editor Breast cancer incidence among females in the Golestan province, Iran Marjani A, Kabir MJ Departments of Biochemistry and Biophysics, Golestan University of Medical Sciences, Gorgan Code Number: cn09086 PMID: 19749474 Sir, Cancer is the third most common cause of death in Iran and, annually, 30,000 Iranians die due to cancer. [1] We evaluated province-specific estimates of incidence of breast cancer in females in the Golestan province of Iran in 2004. The Golestan province is located in the north of Iran, in the south east of the Caspian Sea. Data were identified and collected through 18 Pathology Laboratory centers. Using a structured questionnaire, trained personnel conducted in-person interviews to collect information on breast cancer. Newly diagnosed cases that are detected by histological or cytological examinations were sent to the Cancer Registry Office of the province and to the registry unit in the Health Deputy. Age-specific rates and annual age-adjusted rates (ASRs) per 100,000 person-years were calculated using the direct methods of standardization to the world population. Three hundred and forty-eight patients with cancer from all sites were seen in 2004, with 67 (19.25%) of them having breast cancer. The pathologic diagnosis in these cases was infiltrating duct carcinoma (68.65%), infiltrating ductular carcinoma (4.47%), intra-ductal carcinoma non-infiltrating (4.47%), carcinoma (2.98%), lobular carcinoma (2.98%), comdoc carcinoma (1.49%), medullary carcinoma (1.49%), intra-ductal carcinoma and lobular carcinoma I (1.49%) and phyllades tumor, malignant (1.49%). The overall incidence was 11.81/100,000 persons. [Table - 1] shows that the highest incidence was in the age range of 80-84 years and the lowest was in the age range of 25-29 years. Comparison of the ASR for breast cancer among females with those of breast cancer worldwide shows that the Golestan province is one of the low-risk areas. The incidence is lower when compared with cancer registry in other countries. The highest incidence rates occur in northern and western Europe, northern America, Australia and New Zealand and in the southern countries of South America, notably Uruguay and Argentina. Clear geographical differences in risk are apparent within Europe, with elevated rates in northern and western Europe, whereas rates in most southern and eastern European countries are low to intermediate. [2] Incidence is low throughout Africa, Asia and most of Central and South America. Rates of more than 100 per 100,000 are noted in several US states, whereas the highest rates are recorded in Montevideo in Uruguay. Rates are elevated (50-100 per 100,000) in registries in geographically diverse areas of the world, including most northern and western European countries, Canada, Israel and Argentina. In several Asian populations, such as Hong Kong, Singapore (Chinese) and the Philippines (Manilla), rates are intermediate (30-50 per 100,000) as they are in Puerto Rico and Goiania (Brazil) in South America and most eastern European populations. The lowest rates are seen in several Chinese populations, including the Quidong registry (about 10 per 100,000), whereas observed rates are also low (10-30 per 100,000) in eastern African populations in Zimbabwe and Uganda, Algiers in North Africa, several Southeast Asian registries (Thailand and Vietnam) and several registries in India. Koreans living in the USA have retained a relatively low breast cancer incidence rate (about 28 per 100,000), not dissimilar to that of Koreans living in Korea (21 per 100,000 in Seoul). [3] Acknowledgment The authors would like to thank the Health Deputy of Golestan University of Medical Sciences and their colleagues at the cancer registry for providing the cancer data for publishing this article. References
Copyright 2009 - Indian Journal of Cancer The following images related to this document are available:Photo images[cn09086t1.jpg] |
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