skin angle
Introduction
Brief introduction It is a horn-shaped bulge with a matchstick or chopsticks on the glans. It is brown or brownish gray and has a hard texture. It is believed that it is a neoplasm formed by epidermal keratinocyte proliferation based on the inflammation of the glans. The skin angle is considered to be a precancerous lesion. basic knowledge The proportion of illness: the incidence rate is about 0.001% - 0.004%, the incidence of heavy physical workers is higher Susceptible people: more than 40 years old, more men than women, often more common in the sun Mode of infection: non-infectious complication:
Cause
Cause of skin angle
(1) Causes of the disease
The disease is due to localized conical keratinized lesions.
(two) pathogenesis
The majority of lesions are benign, 50% to 60% of lesions occur in seborrheic keratosis, vulgaris, hemangioma or outer root sheath tumor; 20% to 30% occur in precancerous keratosis Based on this, 20% occur on the basis of squamous cell carcinoma or basal cell carcinoma.
Prevention
Skin angle prevention
There are no effective preventive measures, and early detection and early treatment are the key to prevention.
Complication
Skin complication Complication
Cancer can occur.
Symptom
Symptoms of the skin, common symptoms, congestion
The skin angle is more than 40 years old, more men than women, often more common in the sun, the most common in the face, scalp, neck, forearm and back of the hand and other exposure, also seen in the eyelids, trunk, glans and so on. The lesion is single or multiple, a conical keratinous lesion that can be as high as 2 mm or even 25 mm, and its height is often greater than the transverse diameter. Small as a soy bean, as large as a horn, often conical or cylindrical, and some curved or branched like antlers. The surface of the horn is smooth or rough, and the base is wide and hard, showing skin tone, light yellow or brown. The course of the disease is slow, no symptoms, and it can be cancerous in the non-tumor skin. For example, when there is flushing, redness, and infiltration at the base, it is often considered a precursor to malignant transformation. Therefore, each skin angle should be removed for pathological examination.
Examine
Leather corner inspection
Histopathology: Various lesions are seen at the keratoconus of the keratoconus. The most common are solar keratosis, some are filiform sputum, seborrheic keratosis or squamous cell carcinoma, occasionally External root sheath tumor or basal cell epithelial tumor.
Diagnosis
Skin angle diagnosis
According to the clinical manifestations of skin lesions and histopathological examination can be diagnosed.
