Factors contributing to the development of tumor diseases :
- intense exposure to the skin of various carcinogens (chemicals, ionizing radiation, oncogenic viruses, ultraviolet rays);
- genetic predisposition;
- dysfunctions of the endocrine or human immune systems.
These diseases are divided into three groups:
Benign skin neoplasms:
- lipomas (tumors from adipose tissue);
- hemangiomas (blood vessel tumors);
- lymphangiomas (tumors of the lymphatic vessels);
- nevi (birthmarks) and many others.
- solar keratosis (a tumor of the epidermis that develops under the influence of sunlight);
- Bowen's disease (a single dense mass on the skin);
- long-existing skin lesions (scleroatrophic lichen, local collagenoses, post-burn scars, chronic radiation dermatitis, lichen planus of the mucous membranes);
- xeroderma pigmentosa (a skin disease characterized by increased sensitivity to ultraviolet radiation), and some other rare genetic diseases;
- sebaceous nevus;
- giant congenital melanocytic nevus;
- atypical melanocytic nevi (Clark's nevus);
- nevoid cider of basal cell carcinoma (Gorlin syndrome);
- family predisposition to the development of melanoma.
Malignant tumor diseases:
- tumors of lymphoid tissue;
- melanomas (tumors of pigment-forming tissue);
- soft tissue tumors (sarcoma of the skin);
- skin epithelial tumors (skin cancer);
- skin metastases of other malignant tumors.