Cryosurgery - a modern method of treatment of superficial benign tumors, based on the tissue cooling to extremely low temperatures and their subsequent destruction. In fact, cryosurgery relates to the field of cryosurgery and is considered the surgical treatment.
Cryosurgery liquid nitrogen is widely used in cosmetology, dermatology and medicine. For example, the popular cryodestruction warts, warts, papillomas and other neoplasms. It is widely used procedure for the treatment of vascular lesions and cervical erosion. In many cases, it can successfully replace surgery.
Indications for cryoablation
Cryosurgery with liquid nitrogen is shown in various pathologies that are the infectious nature or relate to skin defects. The most common warts is cryotherapy. This method is widely used for the removal of various tumors or vascular type of pigment: nevus, hemangioma, papillomas, warts, pigmented granuloma, hyperkeratosis, squamous cell carcinoma, epidermal cyst, melanoma, mastocytoma.
Widely used liquid nitrogen cryosurgery in gynecology at the cervical erosion, warts and papillomas of the vagina and vulva, ectopic columnar epithelium, cervical dysplasia, cervical leukoplakia and other gynecological diseases.
The operating principle of cryoablation
The procedure is performed using special equipment (kriodestruktory) or liquid nitrogen. When using a hardware method applicator tip is pressed against the desired area, then cooled to a temperature of -180-190 ° C. When using liquid nitrogen they are impregnated cotton swab and then applied to a damaged tissue for a short time (about 2-3 minutes).
The procedure involves immediate cooling of tissue due to exposure to ultra-low temperatures. As a result, the freezing of the intracellular and extracellular fluid, livelihoods disrupted cells, protoplasm stops and microcirculation in pathological tissue is broken. There is destruction of tissue. After cryoablation destroyed tissue is gradually replaced by healthy ones.
For different purposes different tips are used, which are selected depending on the size of the surface. Wherein the contact plane to be parallel.
Cryodestruction process is divided into the following stages:
- Freezing tissue in liquid nitrogen. This tissue becomes dense, cold, white and insensitive. Often this is accompanied by tingling, slight burning pain and gently.
- After cryoablation appears collateral edema and hyperemia, which lasts from 1 to 3 hours.
- The appearance of epidermal bubbles that are 6-24 hours later.
- Necrosis is rejected completely for 2-6 weeks. After cryoablation remained inconspicuous spot, it begins the process of epithelialization of the defect and the surrounding tissue.
- Full tissue regeneration takes place about six months.
Advantages of cryoablation
Cryosurgery with liquid nitrogen has a number of obvious advantages:
- necrotic area does not bleed;
- It leaves no scars or scars;
- the ease of the procedure;
- cryosurgical intervention does not require anesthesia, as the rapid cooling produces analgesic effect;
- minimal injuries;
- the speed of the method;
- Stable desired effect;
- cryodestruction transferred easily and painlessly;
- It does not require a long preoperative preparation;
- during and after the procedure takes termination of metastasis;
- no recurrence;
- It does not require post-operative care and suturing.
- prolonged healing (21 days);
- It is not always possible to use this particular method of treatment (large size tumors, inaccessible place, etc.).
Contraindications to cryoablation
The procedure is contraindicated in acute infectious diseases, as well as the presence of inflammatory process in the internal organs.