piloacanthoma
Introduction
Introduction to arachnoid tumor Pilarsheathacanthoma (1) Mehrengan and Brownhstein first reported that most of them are common in adult face, especially in the upper lip. Similar to the outer root sheath epithelium, histopathology has a large irregular branching cystic cavity that is different from the dilated pore. Surgical resection treatment. basic knowledge The proportion of illness: the incidence rate is about 0.004%-0.005% Susceptible people: adults Mode of infection: non-infectious Complications: swelling
Cause
Causes of acanthosis
Causes:
The cause is still unknown.
Pathogenesis:
The pathogenesis is still unclear.
Prevention
Hair sheath acanthoma prevention
Early detection and early diagnosis and early treatment, avoid overeating and eating too fast in the diet. The diet should be regular, quantitative, and maintain a good mood when eating, and peace of mind. Do not eat too hard, too hot food. Eat food that is too rough and too hot.
Complication
Complications of acanthosis Complications swelling
The etiology of this disease is not clear, and may have certain correlation with environmental factors, genetic factors, dietary factors, and mood and nutrition during pregnancy. At present, it is believed that there is a certain relationship with HPV25 type. Therefore, the clinically complicated skin mucosa rupture induces infection, and the skin integrity is destroyed. Therefore, skin bacterial infection or fungal infection can be induced by scratching, which is usually secondary to low constitution or long-term. Patients with immunosuppressive agents and fungal infections such as onychomycosis, such as concurrent bacterial infections, may have symptoms such as fever, swelling of the skin, ulceration, and purulent secretion. Severe cases can lead to sepsis, which should be brought to the attention of clinicians.
Symptom
Hairstem arachnoid symptoms common symptoms nodular papular pigmented lesions
Most of them are common in adult face, especially in the upper lip, which is characterized by a single skin color nodule with a hole-like opening in the center. Skin lesions grow rapidly, from 1mm rash or pimples to hemispherical shape of 25mm in 3-8 weeks, dome-shaped, skin-colored nodules. The surface of the nodule is smooth and the center of the crater is filled with angle plugs. The skin lesions are smooth and bright with a clear boundary, and the capillaries are visible on the surface. Atypical keratoacanthoma is common, some are similar to seborrheic keratosis or benign acanthoma, others are nodular proliferative appearance, crater-like depression. Large keratoacanthoma refers to a diameter greater than 2 cm, often invading the nose and eyelids. A sinusoidal acanthoma is rare and tender. It is a destructive crater-like central end-to-end phalanx injury. Underarm damage often does not resolve naturally, and early bone damage is caused. Under radiation, it is characterized by a crescentic osteolytic defect without sclerosis or periosteal reaction. Single keratoacanthoma occurs in the exposed area, such as the middle of the back of the hand and the arm, and other such as the buttocks, thighs, penis, ears and head can also be affected. Female hand has less back damage and small leg damage is common in oral mucosa. More common in middle-aged and older people, males are less likely to see this disease. The interesting feature is that it takes about 2 to 6 weeks for rapid growth, followed by stability within 2 to 6 weeks. Finally, it disappears after 2 to 6 weeks, leaving a slight depression. scar. However, some damage will take 6 months to 1 year to fully subside. It is estimated that approximately 5% of the damage can recur.
Examine
Examination of acanthosis
Histopathology: large irregular branching cysts appear different from dilated pores. In hyperplastic areas, such as dilated pores, most tumor cells divide into lobes and radially invade the dermis and subcutaneous tissue from the cystic wall. In some parts, the tumor cells are arranged in a grid around and contain different amounts of glycogen, and thus resemble the outer root sheath epithelium.
Diagnosis
Diagnosis and differentiation of arachnoid tumor
According to the clinical manifestations, it is found in the adult face, especially in the upper lip, which is characterized by a single skin color nodule, with a hole-like opening in the center, which can be diagnosed by combining histopathological features.
