smooth muscle hamartoma
Introduction
Introduction to smooth muscle hamartoma Smooth muscle hamartoma (smoothmusclehamartoma) is rare, occurring at birth, or during childhood and adolescence. Occurs in the waist, a few centimeters in diameter, often with small follicular papules on the surface. basic knowledge Sickness ratio: 0.05% Susceptible people: no specific population Mode of infection: non-infectious Complications: pruritus
Cause
Cause of smooth muscle hamartoma
(1) Causes of the disease
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.
(two) pathogenesis
The pathogenesis is still unclear. Pathological examination revealed that a large number of long, thick and straight smooth muscle fiber bundles arranged in different directions were visible throughout the dermis. It can be seen that the smooth muscle bundle is closely related to the hair follicle.
Prevention
Smooth muscle hamartoma prevention
It is mainly aimed at preventing various factors that may cause smooth muscle hamartoma. It is currently believed that the loss of normal immune surveillance function, the tumorigenic effect of immunosuppressants, the activity of latent viruses and the long-term application of certain physical (such as radiation), chemical (such as anti-epileptic drugs, adrenal cortical) substances may lead to The proliferation of lymphatic reticular tissue eventually leads to smooth muscle hamartoma. Therefore, pay attention to personal and environmental hygiene, avoid drug abuse, and pay attention to personal protection when working in a harmful environment.
Complication
Smooth muscle hamartoma complications Complications pruritus
Concurrent Becker black disease.
Symptom
Symptoms of smooth muscle hamartoma Common symptoms Pimples
Occurs in the waist, the damage is a slightly raised plaque, a few centimeters in diameter, often with small follicular papules on the surface. If Becker melanosis occurs concurrently, it can be seen that the pigmentation is increased and hairy.
Examine
Examination of smooth muscle hamartoma
Clinical skin examination: The lesion is a slightly raised plaque with a diameter of several centimeters and often has a small follicular papule on the surface. If Becker is black, there is a noticeable increase in pigmentation and hairiness.
Histopathology: Long, thick and straight smooth muscle fiber bundles arranged in different directions are visible throughout the dermis. It can be seen that the smooth muscle bundle is closely related to the hair follicle.
Other examinations: mainly B-ultrasound, can determine the size of the tissue and whether there is infiltration.
Diagnosis
Diagnosis and diagnosis of smooth muscle hamartoma
diagnosis
According to the clinical manifestations, the characteristics of skin lesions and histopathological features can be diagnosed.
Differential diagnosis
According to the clinical features, the disease should be differentiated from leiomyosarcoma. The leiomyosarcoma is a malignant tumor. It has clinical symptoms of compression and irritative pain. It is usually caused by nocturnal pain, the surface skin temperature can be increased, and the superficial skin is superficial. Varicose veins. Usually tumors can be transferred to the bones and internal organs via the blood circulation to form secondary tumors.
