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EN
The article contains a review of selected classification methods of dermatoscopic images with human skin lesions, taking into account various stages of dermatological disease. The described algorithms are widely used in the diagnosis of skin lesions, such as artificial neural networks (CNN, DCNN), random forests, SVM, kNN classifier, AdaBoost MC and their modifications. The effectiveness, specificity and accuracy of classifications based on the same data sets were also compared and analyzed.
PL
Artykuł zawiera przegląd wybranych metod klasyfikacji obrazów dermatoskopowych zmian skórnych człowieka z uwzględnieniem różnych etapów choroby dermatologicznej. Opisane algorytmy są szeroko wykorzystywane w diagnostyce zmian skórnych, takie jak sztuczne sieci neuronowe (CNN, DCNN), random forests, SVM, klasyfikator kNN, AdaBoost MC i ich modyfikacje. Porównana i przeanalizowana została również skuteczność, specyficznośc i dokładność klasyfikatów w oparciu o te same zestawy danych.
EN
In the last few years, a great attention was paid to the deep learning Techniques used for image analysis because of their ability to use machine learning techniques to transform input data into high level presentation. For the sake of accurate diagnosis, the medical field has a steadily growing interest in such technology especially in the diagnosis of melanoma. These deep learning networks work through making coarse segmentation, conventional filters and pooling layers. However, this segmentation of the skin lesions results in image of lower resolution than the original skin image. In this paper, we present deep learning based approaches to solve the problems in skin lesion analysis using a dermoscopic image containing skin tumor. The proposed models are trained and evaluated on standard benchmark datasets from the International Skin Imaging Collaboration (ISIC) 2018 Challenge. The proposed method achieves an accuracy of 96.67% for the validation set. The experimental tests carried out on a clinical dataset show that the classification performance using deep learning-based features performs better than the state-of-the-art techniques.
PL
Substancje promieniochronne niewątpliwie są jedną z najlepszych metod profilaktyki przed nowotworami skóry. Niemniej jednak powszechność oraz nagminne stosowanie filtrów UW może przyczyniać się do ich akumulacji w środowisku.
4
Content available Biomineralogy of selected skin cancer
EN
Investigation of Carcinoma basocellulare solidum exulcerans, Carcinoma basocellulare superficiale multicentricum, and Trichoepithelioma was performed using histology and biomineralogical methods. Obtained data confirmed elevated levels of some elements in altered skin tissues. Moreover, rare micrograins of phosphates were observed. Additionally, examination of biomineralization of human tissues suggests that higher local mineralization (of tissue fluids) may lead to mistakes in DNA code at the moment of cell division. It is possible that cancer tissues are secondarily mineralized by activity of cancer cells. Further research is needed to answer questions that arose.
PL
Wykonano badania mineralizacji guzów nowotworowych wybranych zmian rakowych skóry. Stwierdzono w nich podwyższone zawartości niektórych pierwiastków takich jak P, Ca, S, Si, K i in. Otrzymane wyniki pozwalają na postawienie pytania czy badane nowotwory skóry s…a efektem lokalnej mineralizacji obserwowane jako podwyższone zawartości niektórych pierwiastków w tkankach czy też aktywność biologiczna stref nowotworowych powoduje koncentracje pierwiastków w tkankach. Wykonane badania sugerują, że podwyższona mineralizacja płynów ustrojowych może sprzyjać defektom powstającym w DNA w części odpowiedzialnej za mnożenie się komórek. Efektem tego zjawiska może być szybkie namnażanie komórek czyli powstawanie tkanek (guzów) nowotworowych.
5
Content available remote Skin Cancer and UV Protection
EN
The incidence of skin cancer is increasing by epidemic proportions. Basal cell cancer remains the most common skin neoplasm, and simple excision is generally curative. On the other hand, aggressive local growth and metastasis are common features of malignant melanoma, which accounts for 75% of all deaths associated with skin cancer. The primary cause of skin cancer is long exposure to solar ultraviolet radiation (UV-R) crossed with the amount of skin pigmentation and family genetics. It is believed that in childhood and adolescence, 80% of UV-R gets absorbed while in the remaining, 20 % gets absorbed later in the lifetime. This suggests that proper and early photoprotection may reduce the risk of subsequent occurrence of skin cancer. Reducing the exposure time to sunlight, using sunscreens and protective textiles are the three ways of UV protection. Most people think that all the clothing will protect them, but it does not provide full sun screening properties. Literature sources claim that only 1/3 of the spring and summer collections tested give off proper UV protection. This is very important during the summer months, when UV index is the highest. Fabric UV protection ability highly depends on large number of factors such as type of fiber, fabric surface, construction, porosity, density, moisture content, type and concentration of dyestuff, fluorescent whitening agents, UV-B protective agents (UV absorbers), as well as nanoparticles, if applied. For all of these reasons, in the present paper, the results of UV protecting ability according to AS/NZS 4399:1996 will be discussed to show that standard clothing materials are not always adequate to prevent effect of UV-R to the human skin; and to suggest the possibilities for its improvement for this purpose enhancing light conversion and scattering. Additionally, the discrepancy in UV protection was investigated in distilled water as well as Adriatic Sea water.
6
Content available remote Hair removal from dermoscopic color images
EN
Skin cancer is the most commonly diagnosed type of cancer in people, regardless of age, gender, or race. One of the most common malignant skin cancers is melanoma, which is a dangerous proliferation of melanocytes. It is a well-known fact that early diagnosis of skin cancer is crucial and allows for successful treatment. Treatment of melanoma is not effective when melanoma is at an advanced stage. A widely used tool for the examination of skin lesions is a dermatoscope, which uses optic magnification to visualize features that are invisible to the naked eye. For a precise and objective diagnosis, there is a need for a computerized method for the removal and inpainting of hairs in image processing. In this study, we present an algorithm for the detection and inpainting of hairs in color dermoscopic images.
7
Content available remote A computer-based imaging system for multispectral inspection of skin cancer
EN
Multi-band imaging computer-based system, self-designed and self-constructed, based on a liquid-crystal filter with spectral transmittance driven in 400 nm - 740 nm wavelengths range is presented. Performed tests of images dimensionality reduction, which base on different types of principal component analysis, indicated onto flexibility and usefulness of the described approach for skin cancer diagnosis.
PL
W artykule opisano samodzielnie zaprojektowany i wykonany, wspomagany komputerowo, oparty na transmisyjnym filtrze ciekłokrystalicznym pracującym w zakresie długości fal od 400 nm do 740 nm, układ do obrazowania wielospektralnego. Przeprowadzone testy redukcji wymiarowości obrazu, w oparciu o różne rodzaje analizy jego składowych głównych, wskazały na użyteczność zastosowanego podejścia w diagnostyce raka skóry. (Komputerowy system wielospektralnej analizy danych obrazowych raka skóry).
8
Content available remote Chemioterapeutyki stosowane w leczeniu nowotworów skóry
EN
Skin cancer is the most often encountered malignant cancer which stands for about 1/3 of all medically confirmed cancers. Number of patients with diagnosed cancer of this type increases annually by 10 to 15%. Skin cancer belongs to the group of malicious in situ cancers, which hardly develops metastasis to other organs. Nevertheless considering the frequency of occurrence and localization, its importance should not be disregarded. The most often occurring skin cancer is basal cell carcinoma (BCC), which stands for about 65-75% of all skin cancers and about 25% of all diagnosed cases of cancer. Second most encountered skin cancer is squa-mous cell carcinoma, which constitutes 20-30% of all skin cancers, while malicious melanoma only 1.5-2%. Oncological surgery and radiotherapy are the most popular treatments of skin cancer, while chemotherapy is less applied. Results of the first two methods are comparable. Differences refer to frequency of occurrence, side effects, treatment and cosmetic effects having influence on the quality of patients' life. Third type of skin cancer - malicious melanoma - belongs to the group of the most aggressive, which hardly undergo treatment. The cytostatic drug being most active in monotherapy of melanoma is decarbazine. Other substances that demonstrate some/partial activity in treatment of malicious melanoma are: temozolomide, cis-platin, carboplatin, vinblastin, vincristine, paclitaxel, docetaxel.
PL
Przedstawiono przypadek chorej z zaawansowanym rakiem podstawnokomórkowym twarzy. Pacjentka nie wyraziła zgody na leczenie chirurgiczne, zaproponowano więc kriodestrukcję zmiany nowotworowej. Po dwóch sesjach mrożenia uzyskano zadowalający wczesny wynik leczenia pod względem onkologicznym i kosmetycznym. U wybranych chorych kriochirurgia może stanowić alternatywę w stosunku do zabiegu chirurgicznego.
EN
The case of female patient with advanced basal cell carcinoma of the face is here discussed. Patient refused to undergo the traditional surgery treatment. Therefore, the application of cryodestruction was proposed. Good early oncological and cosmetic results have been obtained after two sessions of cryotreatment. Cryosurgery could be an alternative method for ordinary surgery procedure.
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