Modelling basal?cell carcinoma behaviour in avascular skin

Mathematical modelling of avascular-tumour growth.

A system of nonlinear partial differential equations is proposed as a model for the growth of an avascular-tumour spheroid. The model assumes a continuum of cells in two states, living or dead, and, depending on the concentration of a generic nutrient, the live cells may reproduce (expanding the tumour) or die (causing contraction). These volume changes resulting from cell birth and death gener...

Skin carcinoma arising in Leishmania scar: Report of four cases

Basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are the most frequent skin cancers. The etiology of these tumors is multifactorial: Environmental and exogenous factors, genotype and phenotype factors. The development of malignant neoplasms at sites of previous dermal scars is an uncommon but well recognized phenomenon, and since almost all of them were developed on exposed areas it...

Comparison of P53 Intensity, Frequency and Size in Normal Skin Periphery of Squamous Cell Carcinoma, Basal Cell Carcinoma And Melanocytic Nevus in Persian Skin Type

Background:Non-Melanoma Skin Cancer (NMSC), the most prevalent types being Squamous Cell Carcinoma (SCC) and Basal Cell Carcinoma (BCC), is the most common type of malignancy in human beings. These neoplasms are more frequent in the elderly and fair skinned people and mainly occur on sun-exposed sites of the body. Ultraviolet B (UVB) has a wel...

Cephalopod Behaviour: Skin Flicks

Cephalopods, such as octopus and squid, can change their coloration in an instant, and even produce moving patterns on their skin. A new study describes these wavelike patterns in a colourful tropical cuttlefish, providing insights into the neural mechanisms that generate them.

Human behaviour in epidemic modelling