Lip lesions in Nigerian Igbos

Onuigbo, Wilson Ib

doi:10.1016/s0300-9785(78)80050-7

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…South Australia has the highest reported rate of 13.5 per 100,000 per annum between 1988-1992, although registries in Western Australia (8.7) and the Australian Capital Territory (ACT) (8.9) also report a high incidence of lip cancer during the same period. The incidence rate for lip cancer in the ACT was almost double the 4.5 per 100 000 per annum reported between 1978(Muir et al, 1987. No explanation has been found for this sudden increase.…”

Section: Oceaniamentioning

confidence: 87%

“…(b) Females have a much lower incidence of lip cancer perhaps due to reduced frequency of outdoor occupations and the protective effects of cosmetics (Preston-Martin et al, 1982;King et al,1995;Pogoda and Preston-Martin, 1996). (c) Dark-skinned populations have a much lower incidence of lip cancer than is seen in fair-skinned individuals (Lindqvist, 1979;Onuigbo, 1978;Dardanoni et al, 1984). This observation is supported by incidence data from the United States of America.…”

Section: Solar Radiationmentioning

confidence: 91%

“…Of all the SEER regions, Utah has shown a consistently higher incidence rate for lip cancer over the past two decades-reported rates for males were 12.3 per 100 000 per annum between 1966-1970 (Waterhouse et al, 1976); 10.3 per 100 000 per annum from 1973(Waterhouse et al, 1982; 8.1 per 100 000 per annum between 1978(Muir et al, 1987 and 10.3 per 100 000 per annum from (Parkin et al, 1992. The latest reported incidence rate for lip cancer in Utah (4.1 per 100 000 per annum), while lower than in previous decades, is still one of the highest in the United States.…”

Section: North Americamentioning

confidence: 99%

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The epidemiology of lip cancer: a review of global incidence and aetiology

et al. 1999

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Lip cancer (140 ICD‐9) is a form of oral cancer that has a distinctive global epidemiology. This review summarises global incidence rates for male and female lip cancer with the aid of cancer atlases. High male lip cancer rates are reported for regions of North America (12.7 per 100 000 per annum), Europe (12.0 per 100 000 per annum) and Oceania (13.5 per 100 000 per annum), while it is virtually unknown in parts of Asia. Factors commonly cited as important in the aetiology of lip cancer include solar radiation, tobacco smoking and viruses. An attempt is made to summarise the evidence for factors that may be important in lip carcinogenesis. While incidence rates are generally stable or falling among males worldwide, they are rising in many female populations. The aetiology of the disease is far from established and much information regarding its pathogenesis is based on anecdotal rather than case‐controlled epidemiological evidence. The epidemiology of lip cancer supports the proposal that the lip should be considered as a distinct cancer site, rather than being included with other forms of intraoral cancer.

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Section: Oceaniamentioning

confidence: 87%

Section: Solar Radiationmentioning

confidence: 91%

Section: North Americamentioning

confidence: 99%

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The epidemiology of lip cancer: a review of global incidence and aetiology

et al. 1999

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“…A previous cancer history was also significantly associated with the photosensitive patients ( p =0.001). Other groups had already shown the development of LLSCCs in albino patients previously affected by skin cancer ( 12 , 13 ), and Nico and coworkers stated that patients with LE may present previous tumors in malar, ear and scalp regions ( 14 ).…”

Section: Discussionmentioning

confidence: 99%

Lower lip squamous cell carcinoma in patients with photosensitive disorders: Analysis of cases treated at the Brazilian National Cancer Institute (INCA) from 1999 to 2012

Borges¹,

Lanaro²,

Bernardo³

et al. 2017

Med Oral

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BackgroundLower lip squamous cell carcinoma (LLSCC) is a common malignancy of the head and neck, being mainly a consequence of a chronic exposure to ultraviolet (UV) light solar radiation. Here, we evaluated the clinicopathological profile of patients with photosensitive disorders (xeroderma pigmentosum, lupus erythematosus and albinism) that developed LLSCC.Material and MethodsData from patients who had a diagnosed LLSCC with a prior xeroderma pigmentosum, lupus erythematosus or albinism diagnosis that were treated at INCA from 1999 to 2012 were collected from patients’ medical records (n=16). The control group was composed of 68 patients with LLSCC without a medical history of photosensitivity. The clinicopathological data of this study population were collected and the association between these variables was analyzed by Fisher’s exact test. Survival curves were constructed using the Kaplan–Meier method and compared by log-rank test. All statistical analyses were performed using SPSS statistics package.ResultsThe mean age of patients in the photosensitive and non-photosensitive groups was 42 years and 67 years, respectively (p<0.0001). A previous history of malignant diseases was more common in the photosensitive group (p=0.001). In both groups, most tumors showed a pathological stage I/II disease. Overall and cancer-specific survival were not statistically different. However, disease-free interval showed a significant difference (p=0.01) between the photosensitive and non-photosensitive patients.ConclusionsPhotosensitive patients presented LLSCC at earlier age but it usually was not the primary tumor in these patients. Furthermore, a more aggressive pathological behavior was not seen when compared with tumors from non-photosensitive patients. The disease-free interval was lower in photosensitive patients, as expected. Key words:Lip cancer, Xeroderma Pigmentosum, Albinism, Lupus erythematosus.

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“…Additionally, the Pacific Island population have a high proportion of sincipital encephalocoeles (44% of cases), which approaches that of Australian Aboriginals (50%) and slightly surpasses the Eastern Nigerian population (40%). 9 These proportions however remain significantly less than the 9 to 1 ratio of sincipital to occipital lesions reported in Thailand. 2 Parietal lesions were rare in our study population, accounting for only 3/46 (7%) of the cases.…”

Section: Discussionmentioning

confidence: 87%