Central Nervous System Tumors in Guilan, Iran: Epidemiological Features Over 10 Years

Kourosh, Askari; Janeshin, Sara; Mashouf, Mehryar; Maryam, Taherzadeh Amlashi; Mohammad, Seyed Saadat Seyed

doi:10.18869/acadpub.cjns.1.1.19

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…Our findings on the histology of tumours are not possibly conclusive enough due to notably high rates of unspecified tumours (mostly M 8000.3 and M 8001.3 codes), which are likely a reflection of lack of advanced diagnostic facilities particularly in rural areas that indicates high rates of astrocytic and oligodendroglia tumours. These findings are in line with previous studies conducted in Iran [ 22 , 25 , 27 ]. Lack of a unanimous tumour diagnosis even by skillful pathologists is another reason behind the high rates of unspecified tumours.…”

Section: Discussionsupporting

confidence: 93%

“…The mean age at diagnosis was 45.54 years in our study which is higher than that of other studies in Iran [ 21 , 23 – 27 ] and Jordan [ 19 ] but is lower than that of other developed countries which seems to be related to population structure changes. The preponderance of males among CNS tumour patients in our study is in accordance with the global estimates in 2012 (1.41 compared with 1.2 m/f ratio) [ 31 ] and the estimates in most of other studies in the world that represent male to female ratios between 1 and 2.7 [ 35 ]; however, some studies showed female predominance similar to Qom province [ 19 , 22 , 46 ]. The possible hypothesis for male preponderance is sex hormones and adverse working conditions such as exposure to chemicals and pesticides [ 47 ].…”

Section: Discussionsupporting

confidence: 91%

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Descriptive Epidemiology of Brain and Central Nervous System Tumours: Results from Iran National Cancer Registry, 2010-2014

Salimi

Zali

Seddighi

et al. 2020

Journal of Cancer Epidemiology

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Background. Central nervous system (CNS) tumours account for only 1-2% of cancer incidence but are a major reason for mortality and morbidity due to malignancies. Recent studies show an increase in the rate of CNS tumours worldwide, especially in developing countries. Moreover, there is significant heterogeneity in epidemiological patterns worldwide. This study is aimed at representing nationwide epidemiology of CNS tumours in Iran. Methods. Iran National Cancer Registry 2010-2014 data were reviewed for CNS tumours. The epidemiological rates were calculated for both genders and all age groups using the 2011 census information. Results. Out of 17345 cases, 58.5% were men and 41.5% were women. The mean age was 45.55 years ranging from less than 1 month to 100 years old. Average total age-standardized incidence rate (ASR) was 5.19 for primary tumours. The annual percent change (APC) was 14.23% during the study period. The most frequent site and histology recorded were brain, NOS and diffuse astrocytic, respectively. Geographical distribution showed about five-fold difference in ASRs between different provinces. Conclusion. The overall ASR calculated was higher than the global rate in 2012 but lower than that of most developed countries, showing an increasing trend which may be due to either advances in diagnosing or risk factor augmentation. The mean age and incident rates were higher than those of previous reports in Iran.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 91%

Descriptive Epidemiology of Brain and Central Nervous System Tumours: Results from Iran National Cancer Registry, 2010-2014

Salimi

Zali

Seddighi

et al. 2020

Journal of Cancer Epidemiology

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“…Brain tumors are considered the most common solid tumors that develop during childhood comprising 20% of all neoplasm and the primary cause of cancer deaths in this age group. 20 Those who survive may suffer long term sequels from the tumor or its treatment. 21 …”

Section: Discussionmentioning

confidence: 99%

Cancer Trends in Iraq 2000–2016

Hussain

Lafta

2021

Oman Med J

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Objectives: Precise and quantitative assessment of the trend of cancer burden enables policymakers and health managers to prioritize diseases and allocate resources better. This infers what caused a decrease or increase in the rate of cancer occurrence, and if it denotes timing of implementation of a control measure, it presents the impact on the disease rate. This study’s objective was to evaluate trends in child and adult cancer in Iraq from 2000 onwards. Methods: We used the registries of the Iraqi Ministry of Health that were gathered from all governorates from 2000–2016. Data were presented as incidence rates to depict the trends of different types of cancers distributed by age, gender, and governorates. Results: Breast cancer witnessed a significant increase with predominance in females. Lung cancer rate increased significantly from 4.08 to 5.60/100 000 (p = 0.038), affecting males more than females. The brain cancer trend showed a bimodal pattern (two peaks in 2004 and 2011) with no significant trend change (p = 0.788). Both genders were similarly affected. The trend of stomach and colorectal cancer showed an accelerated increase after 2007. Conclusions: Almost all cancers (particularly lung and gastrointestinal) showed constantly raising trends, especially after 2007. Only cervical and laryngeal cancer had a decreasing trend. Most cancers were predominant in males.

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“…Consequently, the prevalence of glioma reported to be about 45% of all brain tumors is rather low in comparison to the western data, but practically the same as in Southeast Asian countries [7]. The annual occurrence of CNS tumors varies from 10 to 17 cases per 100,000 persons of intracranial tumors and 1 to 2 cases per 100,000 persons for intraspinal tumors [8]. In the USA, overall incidence of malignant brain tumors was reported as 5.74 per 100,000 persons.…”

Section: Introductionmentioning

confidence: 99%

“…Incidence was lowest in Southeast Asia and East Asia and was highest in Northern Europe (6.6) and Canada (6.5) per 100,000 persons respectively [9]. Study of CNS tumors for a 10-year period in Guilan/Iran showed that out of 365 cases, 80% was reported as brain tumor and the remaining revealed as spinal tumor [8].…”

Section: Introductionmentioning

confidence: 99%

Preliminary study of central nervous system tumors’ prevalence and incidence in Isfahan Province Iran

Tolou-Ghamari

2020

J Egypt Natl Canc Inst

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Background: Metastatic or primary cancers of the central nervous system are a dissimilar cluster of neoplasms with different consequences and management plans. The aim of this study was to obtain prevalence and incidence of brain and other nervous system tumors. Results: In all, 423 females and 620 males were identified. For the total population the period prevalence (PP) was calculated as 20.9 per 100,000 persons. This value corresponded to a PP of 24.5 for males and 17.2 for females. The mean (SD, range) age of the patients was 52.0 (20.7, 1-99) years. In the 7% of the population studied, age was under 20 years old of life, and in the 71%, it occurred around the age of 20 to 70 years old. In both genders, incidence rate (IR) increased from 4.2 to 5.7 per 100,000 persons. The changes of IR in males versus females were 8.2 versus 3.0 from 2011 to 6.4 versus 5.0 to 2015 per 100,000 persons. Conclusions: Among the total population studied, there were 586 reported deaths. The PP in the male population was 1.4-times higher than females. There was a 35.7% increase in the IR over the study period.

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Central Nervous System Tumors in Guilan, Iran: Epidemiological Features Over 10 Years

Cited by 4 publications

References 20 publications

Descriptive Epidemiology of Brain and Central Nervous System Tumours: Results from Iran National Cancer Registry, 2010-2014

Descriptive Epidemiology of Brain and Central Nervous System Tumours: Results from Iran National Cancer Registry, 2010-2014

Cancer Trends in Iraq 2000–2016

Preliminary study of central nervous system tumors’ prevalence and incidence in Isfahan Province Iran

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