Oral and maxillofacial dermoid and epidermoid cysts
Introduction
Introduction of oral and maxillofacial skin and epidermoid cysts A dermoid cyst or epidermoid cyst is a cyst formed by epithelial development in the tissue during embryonic development: the latter can also be formed by implantation of epithelial cells due to injury, and the skin of the cyst-like cyst is thick, with skin and skin. It is composed of accessories (such as sweat glands, hair follicles, etc.), and there are structures such as epithelial cells, sebaceous glands, sweat glands and hair in the cyst cavity. basic knowledge The proportion of illness: 0.002% - 0.007% Susceptible people: no special people Mode of infection: non-infectious Complications: difficulty swallowing
Cause
Oral and maxillofacial skin and epidermoid cysts
The epithelial cells that are left in the tissue during embryonic development develop, the endothelium-like or epidermoid cysts, and the second pair of zygomatic arches are embedded in the epithelial remnant of the midline fusion, and can also be acquired implanted cysts. It is caused by the deep development of the epithelium when it is brought into the tissue during trauma.
Prevention
Oral and maxillofacial skin and epidermoid cyst prevention
Dermoid cysts are mostly congenital diseases, and there are no preventive measures.
Epidermoid cysts are caused by injuries and surgery, so improving medical care is the best means of prevention.
Complication
Oral and maxillofacial skin and epidermoid cyst complications Complications, difficulty swallowing
When the volume of the cyst at the bottom of the mouth is increased, the tongue can be raised, affecting speech and swallowing.
Symptom
Oral and maxillofacial skin-like, epidermoid cyst symptoms Common symptoms Cyst growth slow gum swelling
1. Occasionally in the mouth, underarms, eyelids, forehead, nose, lateral side, under the ear, etc., more common in children and youth.
2. Slow growth.
3. Often spherical, deep, clear boundaries, touched with a sense of dough, generally no symptoms.
Examine
Examination of oral and maxillofacial skin and epidermoid cysts
1. For the clinical manifestations are more typical, the preoperative diagnosis has been more clear to check the project to check the box limit "A".
2. For the atypical clinical manifestations, the differential diagnosis or the large tumor examination program may include the check boxes "B" and "A".
Diagnosis
Diagnosis and differentiation of oral and maxillofacial skin and epidermoid cysts
diagnosis
Diagnosis can be based on medical history, clinical symptoms, and laboratory tests.
Differential diagnosis
Mainly with the sublingual cyst of the mouth, thyroglossal cyst, cellulitis at the bottom of the mouth.
The sublingual cyst of the mouth is located on the side of the bottom of the mouth. It is partially blue and soft, and the puncture is a thick egg-like liquid.
Mouth cellulitis is caused by odontogenic infection in adults. In children, it is caused by sputum-induced infection, and there are local inflammations such as redness, heat and pain. After one week of onset, pus can be seen through puncture.
The thyroid tongue cyst is more common in children aged 1 to 10 years. The cyst is located in the midline of the upper and lower part of the hyoid bone. The ligament and the cyst may be tied with the tough cord and adhere to the hyoid bone, which can be swallowed and stretched. The tongue moves and moves, and the puncture examination reveals a transparent, slightly turbid yellow thin or viscous liquid.
