Melanoma awareness and prevalence of dermoscopic examination among internet users: a cross-sectional survey

Mortality of Malignant Melanoma in Central Serbia, in the Period 1999-2015

INTRODUCTION

Malignant melanoma is one of the rarest forms of skin cancer but it is the most deadly.

OBJECTIVE

The objective of this paper was to analyze the epidemiological characteristics and trends of mortality from malignant melanoma in the population of Central Serbia in the period 1999-2015.

METHODS

The study was designed as a retrospective descriptive epidemiological study. Standardized mortality rates were used in statistical data processing. A linear trend model and regression analysis were used to examine trends in malignant melanoma mortality.

RESULTS

In Serbia, malignant melanoma mortality shows an increasing trend. The overall age-adjusted melanoma death rate was 2.6 per 100,000 with a higher death rate among men (3.03 per 100,000) than among women (2.1 per 100,000). Malignant melanoma mortality rates increase with age in both sexes and are highest in the age group of 75 and older. The highest increase in mortality in men is recorded in the 65-69 age group, with an average percentage increase of 21.33 (95% CI, 8.40 - 51.05), while in women the largest increase in mortality was recorded in the 35-39 age group, with an average percentage increase of 31.4 and in the 70-74 age group, 12.9.

CONCLUSIONS

The trend of increasing mortality from malignant melanoma in Serbia is similar to those in most developed countries. Education and improvement of awareness in the general population and among health professionals are vital to reducing melanoma mortality in the future.

The Importance of Dermoscopy in Early Recognition of Melanoma in Situ

Early recognition of melanoma in situ (MIS) is an ongoing challenge in dermatology. It rarely arises ‘de novo’, most frequently resulting due to the transformation of an atypical nevus. The diagnostic criteria for MIS are diverse dermoscopy being the most used and it has a sensitivity of 83% and a specificity of 69% in detecting melanomas. The main objective of our study was to establish the sensitivity and the specificity of each of the 7-point checklist criteria used to differentiate melanocytic nevi from in situ malignant melanoma. The study group included 200 patients, aged over 18 years, with atypical pigmentary nevi after clinical aspects that presented changes in clinical appearance (shape, color, dimensions) during the last 6 months. On each patient we used the 7-point checklist of Argenziano (C1-C7). The study was performed at the Medical Center Dr. Ianosi, in Craiova between January 2016 and September 2018 and it was used Molemax HD computerized dermatoscope. The C1÷C3 criteria are significantly relevant in establishing the diagnosis of MIS in comparison with the diagnosis of nevus, unlike the C4-C7 criterion that is not definitely relevant for confirmation of the MIS diagnosis. There are no enough specific dermoscopic criteria to differentiate MIS from atypical nevus.

Knowledge and practices of primary care providers on skin cancer and skin self-examination

OBJECTIVE

To determine the knowledge and practices related to skin cancer and skin self-examination of primary care providers.

METHOD

This cross-sectional descriptive study was conducted in Turkey. The study was carried out in primary health centers such as family health centers, community health centers, early cancer detection centers and family planning centers in 2016-2017. Participants' socio-demographic characteristics, their knowledge and practices related to skin cancer, skin cancer risk factors and skin self-examination were determined.

RESULTS

The study population included 94 primary care providers. The symptoms of which the participants were most aware were changes in the color of moles or skin spots (95.71%), and of which participants were the least aware was the itching of a mole (71.43%). Among participants, the most recognized risk factor was having fair skin (97.14%), whereas the least known was the presence of birthmarks (24.29%). The mean scores the participants obtained from the questionnaire were as follows: 5.39±1.61 for skin cancer risk factors and 10.47±2.73 for skin cancer symptoms. Of the participants, 14.29% received training on skin self-examination, 38.57% knew how to perform skin self-examination, and 67.14% did not perform skin self-examination. Of the participants, 61.7% did not perform skin self-examination because they did not know what to look for. Of the participants, 85.71% did not have continuing education/workshop about skin self-examination after graduation.

CONCLUSION

Although the primary care providers' knowledge of skin cancer symptoms was adequate, their knowledge of skin cancer risk factors was not sufficient. Primary care providers' knowledge of skin self-examination was good, but they did not perform skin self-examination adequately.

Overexpression of CTHRC1 in human melanoma promotes tumorigenesis targeted by miRNA155

Most of human malignant melanoma is metastatic and invasive, which has poor therapeutic response and poor prognosis as well as high incidence worldwide. CTHRC1 was overexpressed in metastatic primary melanomas. The relationship between CTHRC1 and miRNA in affecting the melanoma has not been studied. This study was aimed to explore the function of CTHRC1 in human melanoma and finding its regulator miRNA. CTHRC1 and miR155 expression in cancer tissues and paracancer tissues was examined. The cell proliferation, cell cycle, cell migration and cell invasion was evaluated in M21 cell transfected with CTHRC1 siRNA or miR155. The mRNA expression of miR155 in cancer tissues was lower than that in paracancer tissues. The mRNA expression of CTHRC1 in the cancer tissues was higher than that in corresponding paracancer tissues. The mRNA expression of CTHRC1 in the M21 cells was decreased by treated with miR155 mimic. CTHRC1 promoted the cell proliferation, cell cycle process, cell migration and invasion capacity and prevented the cell from apoptosis. miR155 inhibited the cell proliferation, cell migration and cell invasion, arrested the cell cycle process at G1 phase and enhanced the cell apoptosis. The luciferases reporter assay showed that miR155 bound to the 3'-UTR of CTHRC1 and regulated the expression of CTHRC1, further influenced the functions of CTHRC1 in human melanoma development. The study contributed to unearthing a novel potential predictor and therapeutic targets of human melanoma. CTHRC1 was a potential independent predictor and therapeutic target for human melanoma.

Skin cancer knowledge and attitudes in the region of Fez, Morocco: a cross-sectional study

BACKGROUND

The prevalence of skin cancers is constantly increasing in Morocco, and they have gradually become more aggressive due to a significant delay in the diagnosis. Our aim was to assess the levels of awareness and the influencing factors related to skin cancer knowledge in Morocco.

METHODS

This cross-sectional study was carried out in Morocco through the medium of a validated questionnaire, which contained several items - demographics, skin cancer knowledge and attitudes towards skin cancer patients- during a period of 1 year (2014).

RESULTS

Out of the 700 participants enrolled in the study, 17.9% had never heard of skin cancer, 32.5% had a low score of skin cancer knowledge, 66.7% had a moderate score, and only 0.85% had a high score of skin cancer knowledge. Further, 15.1% of the participants were under the assumption that this cancer is contagious. The sun was the most incriminated risk factor in skin cancer occurrence by 74.3% of the participants, and 57.9% of them believed that prevention is important through using various means of photoprotection. After univariate and multivariate analysis, the influencing factors related to the skin cancer knowledge in Morocco were: the socioeconomic status (P = 0.003, OR = 7. 3) and the educational level (p < 0.001, OR = 20. 9).

CONCLUSIONS

Due to the lack of knowledge or the underestimation of skin cancer in our study population, efforts are needed to promote skin cancer surveillance behaviors in Morocco.