Ulcers have a crater-like appearance
Introduction
Introduction It occurs on the surface of the tumor, has obvious ulcer formation, looks like a crater, and has necrosis in the center. Cancer is often dominated by invasive growth, so the boundary with surrounding tissues is unclear. The appearance of cancer on the surface of the skin and mucous membranes is often polypoid, umbellate or cauliflower-like, with necrosis and ulceration on the surface; often irregular nodules in the organs, which are root-like or crab-like The foot is infiltrated into the surrounding tissue. A surface infiltrative ulcer occurs, which forms a crater.
Cause
Cause
Skin ulcers are generally localized skin tissue defects caused by traumatic microbial infections, tumors, circulatory disorders and neurological dysfunction, immune dysfunction or congenital skin defects. Traumatic ulcers are often caused by physical and chemical factors acting directly on tissues. Microbial infectious diseases are caused by bacteria, fungal spirochetes, viruses, etc., causing tissue destruction, nodules or tumor rupture. An vascular inflammatory ulcer caused by an immune abnormality is formed by necrosis of tissue due to arterial or arteritis. Circulatory or neurological dysfunction is a tissue disorder caused by dystrophic disorders such as varicose veins, leprosy, ulcers, etc.
Examine
an examination
Related inspection
Skin cancer detection toxin skin test
More common in scar cancer, local irritation and hypersensitivity in the scarring area, ulceration after the scar is damaged, or gradually enlarged by the small papules, gradually bulging on the edge of the long-term unhealed ulcer, keratinization or Changes in papillary hyperplasia. The appearance of the ulcer is crater-like, cauliflower-like and worm-like. It is easy to bleed, and the surface can be covered with pus moss and the secretion is stench.
Diagnosis
Differential diagnosis
Atrophic scars are prone to ulceration by external force, and blistering and blister infection are prone to scar ulceration in the early stage of hypertrophic scar. Scar cancer is often caused by repeated ulceration and chronic ulceration, which is easily confused with scar ulcer and requires differential diagnosis.
The incidence of scar cancer is lower, more men than women, more common in adults, occur in the limbs (especially in the lower limbs and blood supply, vulnerable to trauma), more than chronic, long-term unhealed and repeated recurrence of ulcers, There are symptoms of itching, often need to be confirmed by pathological biopsy, can be identified with scar ulcer. It should be emphasized that pathological biopsy is still the fundamental identification of the two. For chronic ulcers, pathological examination should be carried out by multiple sites, multiple times, and large pieces of tissue under local anesthesia; in order to prevent scarring, it should be chronic, recurrent, and long-lasting. Prophylactic resection is performed in time for unhealed ulcers.
