Bhurgri Yasmin, Bhurgri Asif, Usman Ahmed, Pervez Shahid, Kayani Naila, Bashir Imtiaz, Ahmed Rashida, Hasan Sheema H
Department of Pathology, Karachi Cancer Registry, Karachi.
Asian Pac J Cancer Prev. 2006 Apr-Jun;7(2):195-200.
Head and neck cancers, categories lip, oral cavity, pharynx and larynx are placed amongst the top ten malignancies globally. The cancers have a similar epidemiology, risk factors, morphology, and control measures. The geographical variations in incidence are indicative of the global differences in the prevalence of risk factors. The present study was conducted with the objective of reviewing descriptive epidemiological characteristics, incidence and time trends of head and neck cancers in Karachi (1995-2002). Head and neck cancers accounted for approximately one-fifth (21%) of the cancers in males and about one-tenth (11%) in females in the study period. The age standardized incidence rate (ASR) was 37.1/100,000 in males and 21.7/100,000 in females. In males, oral cavity and larynx were the commonly affected sites, followed by pharynx. In females, oral cavity was the preponderant site. The mean age of the patients was 53.0 years (95% CI 48.0; 58.0). A rising incidence was observed in both genders, more apparent in males. About 30% of oral cancer cases, 28.6% of the nasopharyngeal, 6.3% of the oropharyngeal, and 2.6% of laryngeal cancers occurred in patients 40 years and younger. The age specific incidence rates (ASIR) for oral cancer in males showed a gradual rise from 10 to 64+ years of age, for pharynx from 20 to 64+ and for larynx at 25+. The ASIR for oral cancer in females showed a gradual rise from 14 to 64+ years of age, for pharynx from 20 to 64+, a decade after the oral cancer rise and cancer larynx showed a rise at 25+, a decade and a half after the oral cancer rise. The peak incidence was at 64-69 years for all three cancer sites, in both genders. Pakistan falls into a high risk head and neck cancer geographical zone Presentation is late and treatment is not optimum. Recommendations, therefore for NCCP Pakistan, for short term benefits are selected community-based screening for the high risk population, early diagnosis, better treatment, rehabilitation and palliative care. These measures will improve survival and also contribute to a better quality of life. Primary prevention remains the only strategy for absolute cancer control.
头颈癌,包括唇癌、口腔癌、咽癌和喉癌,位列全球十大恶性肿瘤之中。这些癌症在流行病学、风险因素、形态学及控制措施方面具有相似性。发病率的地理差异表明了风险因素在全球范围内的流行程度存在差异。本研究旨在回顾卡拉奇(1995 - 2002年)头颈癌的描述性流行病学特征、发病率及时间趋势。在研究期间,头颈癌在男性癌症患者中约占五分之一(21%),在女性中约占十分之一(11%)。年龄标准化发病率(ASR)男性为37.1/100,000,女性为21.7/100,000。男性中,口腔和喉是常见的受累部位,其次是咽。女性中,口腔是主要受累部位。患者的平均年龄为53.0岁(95%可信区间48.0;58.0)。观察到两性的发病率均呈上升趋势,在男性中更为明显。约30%的口腔癌病例、28.6%的鼻咽癌病例、6.3%的口咽癌病例以及2.6%的喉癌病例发生在40岁及以下患者中。男性口腔癌的年龄别发病率(ASIR)从10岁到64岁及以上呈逐渐上升趋势,咽癌从20岁到64岁及以上,喉癌在25岁及以上开始上升。女性口腔癌的ASIR从14岁到64岁及以上呈逐渐上升趋势,咽癌从20岁到64岁及以上,在口腔癌上升十年后开始上升,喉癌在25岁及以上开始上升,在口腔癌上升十五年后开始上升。所有三个癌症部位的发病率高峰在两性中均出现在64 - 69岁。巴基斯坦属于头颈癌高风险地理区域,就诊时病情往往较晚,治疗也不理想。因此,对于巴基斯坦国家癌症控制规划(NCCP)而言,短期的建议是对高风险人群进行基于社区的筛查、早期诊断、更好的治疗、康复及姑息治疗。这些措施将提高生存率,并有助于改善生活质量。一级预防仍然是绝对控制癌症的唯一策略。