submental dermoid cyst
Introduction
Introduction to the inferior dermoid cyst Inferior dermoid cysts are embryonic ectoderm tissues that are congenital tumors that develop in subcutaneous soft tissue. The incidence of adolescents is clinically characterized by a painless mass that protrudes into the entrance cavity. The surgical resection is effective. basic knowledge The proportion of illness: 0.004%-0.007% Susceptible people: no special people Mode of infection: non-infectious complication:
Cause
Causes of subcutaneous dermoid cyst
(1) Causes of the disease
The subcutaneous dermoid cyst is a congenital malformation or congenital tumor, which is derived from the development of subcutaneous soft tissue in the embryonic ectoderm.
(two) pathogenesis
Histopathology shows that the wall of the capsule is composed of connective tissue, the inner layer is lined with squamous epithelium (like the skin), contains hair, sebaceous glands, sweat glands, etc. The contents of the capsule are sebum and exfoliated epithelium, and often have hair and porridge. .
Prevention
Prevention of subcutaneous dermoid cyst
The subcutaneous dermoid cyst is a congenital malformation or congenital tumor, which is derived from the development of subcutaneous soft tissue in the embryonic ectoderm. Because the cause of congenital malformation is usually unclear, it is impossible to prevent the cause, so early detection, early diagnosis and early treatment are of great significance for indirect prevention of this disease. At the same time, strengthen nutrition during pregnancy, avoid mental depression, and supplement folic acid are conducive to the normal development of the fetus.
Complication
Subgingival cystic complications Complication
Long-term compression of the mass can cause the mandible to sag.
Symptom
Subcutaneous dermoid cyst symptoms Common symptoms Subcutaneous cyst subcutaneous nodules and jaw cyst subcutaneous hematoma
More common in adolescents, in the neck of the midline, between the hyoid bone and the mandible, a spherical mass about 2cm in diameter, the tumor can be large, and can protrude into the entrance cavity, no pain, no adhesion to the skin.
Examine
Examination of the inferior dermoid cyst
A dermoid cyst is a congenital disorder and is a type of hamartoma. It is a congenital cyst formed by the primordial surface of the skin cells, which is often located under the skin, occasionally in the submucosal or internal organs, where the dermoid cyst is located. It is deeper, does not adhere to the skin of the surface layer, is soft and tough, has a large tension, and its base part often adheres to deep tissues such as fascia or periosteum and cannot move, and may be affected by long-term compression at the local bone surface. The impression is formed on the upper surface, and the lipoma is flat and lobulated. It is located under the skin and pushes the local skin along the sides of the tumor with fingers. Orange peel-like signs may appear.
Diagnosis
Diagnosis and differentiation of subcutaneous dermoid cyst
1. Childhood history of childhood.
2. Clinical manifestations A round mass appears above the hyoid bone of the median midline. It is generally deep in position and difficult to be pushed. It can be deformed by hand for a long time.
It is easy to distinguish from other congenital neck cysts. The subarachnoid cyst is located above the hyoid bone. The thyroid gland cyst or thymic pharyngeal cyst is located below the hyoid bone.
