Translate the following passage into Arabic preserving the technical terms involved.
Cancer
Cancer in man is a group of over 100 related diseases that may arise in any of the body's tissues and that are characterized by the uncontrolled and disorderly multiplication of abnormal cells. If their growth is not checked , these cells infiltrate and destroy adjacent tissues. Often cancer cells are tramported to distant parts of the body, where they grow as colonies called metastases.
The cancerous or malignant process begins as a progressive, unrestrained division of abnormal cells. Viewed through a microscope, cancer cells may initially maintain some degree of differentiation - that is – their specialized structure and function so that they resemble those cells from which they arise or some developmental stage of the tissues of origin. Some cancer cells may perform limited normal functions. As the disease progresses, however, the cells usually become increasingly abnormal in appearance, structure, and function until they may not be recognizable as an offshoot of the tissue of origin.
They may appear in agreat variety of sizes and shapes. Chromosomes in malignant cells undergoing division may appear oversized or may have asymmetrical spindles or other abnormalities. Unlike benign tumours, malignant tumours are not contained within capsules, or if they are, the capsules , are incomplete.
A typical benign tumour is usually encapsulated within a membrane of a connective tissue. Microscopically,the benign mass has a homogenous appearance if it is derived from one type of tissue. An individual type of cells all appear alike. Degenerative and regressive changes are much less frequent than in malignant tumours, and the patterns of benign tumours are usually orderly. They do not metastasize .(Both benign tumours and malignant tumours are often referred to as neoplasms).
Cancer grows in all known groups of animals except the lower animals; many plants even develop cancer-like growths,cancer-like changes have been found in million-year-old fossil dinosaur bones. In man, the phenomenon has been recognized since earliest time and occurs in all human populations.
Human cancer morbidity and mortality vary from country to country, but in most western countries where infectious diseases are under control, cancer is the primary causes of death. In the United States, for example, cancer is the second leading cause of death and strikes one in four persons. In most countries, cancer mortality for men substantially exceeds that for women. Scotland has the highest overall cancer mortality rate among men and Portugal the lowest. Among women, Chile has the highest reported cancer mortality, andPortugal the lowest.