Eccrine nevus
Introduction
Introduction to small sweat gland Small sweat gland (eccrinenevus) is very rare, true small sweat gland can be divided into 3 types. The first type is a single dilated hole with mucus secretions. The second type is a significant increase in local sweat, the skin lesions are not obvious, and the sweat is called naevussudoriferus. The third type is small plaque. basic knowledge The proportion of illness: 0.0006% Susceptible people: no special people Mode of infection: non-infectious Complications: ichthyosis
Cause
Cause of small sweat adenine
Pathophysiology (30%):
The normal mature eccrine sweat gland is enlarged and increased, and there may be one or more catheters. The gland only enlarges when there is only one catheter, and increases when there are multiple catheters, and can mix small nerves. The upper epidermis may have basal-like cell proliferation.
Pathological changes (30%):
(1) Large and small sweat glands and their ducts with obvious hyperplasia in the deep and subcutaneous layers of the dermis, and the structure of the hypertrophic sweat glands is disordered.
(2) Epidermal basal cell proliferation, increased pigmentation in the base layer.
(3) Many sweat glands form small cavities with small nerve fibers mixed around them.
(4) When there are many capillaries around the small sweat glands, it is called a small sweat gland hemangioma.
(5) The catheter of apocrine adenine can be connected to the hair follicle.
Prevention
Little sweat adenine prevention
The cause of this disease is not clear, the disease is also very rare, so it is impossible to prevent the cause. Therefore, early detection, early diagnosis and early treatment are of great significance for the indirect prevention and treatment of this disease. For patients with clotting of sweat gland ducts, there may be obvious itching symptoms and feasible surgical treatment.
Complication
Small sweat adenine complications Complications
May be associated with skeletal defects, central nervous system abnormalities, eye damage and other skin lesions such as ichthyosis, rickets, Becker, basal cell carcinoma, apocrine adenine and hair follicle cysts.
Symptom
Small sweat adenine symptoms common symptoms hyperhidrosis skin rough light brown spots
The eccrine nevus is rare. The true small sweat gland can be divided into three types. The first type is a single dilated hole with mucous secretions. Histopathologically, there are many discs composed of secretory glands and ducts. Located in the deep part of the dermis, it is connected with the dilated hole in the surface of the skin. The second type is a significant increase in local sweat, the lesion is not obvious, the histologically small sweat glands are significantly increased, and the sweat is called naevus sudoriferus. The third type is small plaque. shape.
Examine
Small sweat gland examination
Blood routine, histopathological examination: The first type, which is composed of a number of discs composed of secretory glands and ducts, is located deep in the dermis and is connected to the dilated holes in the surface of the skin. The second type is a significant increase in local sweat, lesions are not obvious, histologically a small sweat gland significantly increased, called sweating (naevus sudoriferus). The third type is small plaque.
Diagnosis
Diagnosis and identification of small sweat adenine
diagnosis
According to the clinical manifestations, the characteristics of skin lesions and histopathological features can be diagnosed.
Differential diagnosis
Small sweat glands appear in the lower limbs. The skin lesions are irregular brown spots, the surface can be rough, hairy, and partially sweaty; it develops rapidly during adolescence and stops developing in adulthood. Differential diagnosis:
Sweat adenoma is a benign skin appendage tumor, which is closely related to sweaty tumor. Some scholars use acral spiral tumor to name sweat adenoma and poroke. It is currently believed that sweat adenomas are derived from both apocrine sweat glands and small sweat glands. Visible growth of tumor cells can be seen.
Sweat tumor is an adnexal tumor, which is essentially a hamartoma that differentiates into the duct of the small sweat gland. The cell mass is round or ovoid and has a sputum or "," shape.
