salivary gland cyst
Introduction
Introduction to parotid cyst Parotid cysts can occur in three pairs of large salivary glands and all small parotid glands, there are two types of retention cysts and congenital cysts. Residual cysts are most common, often occurring in the sublingual gland and small parotid gland, followed by the parotid gland. Submandibular gland cysts are very rare, due to catheter constriction, or tumor obstruction caused by tumors, calculus, injury, parasites, etc. This condition is an intermittent obstruction. In the absence of inflammation, the proximal acinus of the catheter The bubble expands to form a retention cyst. Congenital cysts are more common in the parotid gland. They are due to the development of epithelial components left in the deep tissues during embryonic development. The cysts in the small parotid glands are called mucinous cysts, and the cysts that occur in the other parotid glands are according to the site of the disease. Named, sublingual cyst, submandibular gland cyst and parotid cyst. basic knowledge The proportion of illness: 0.025% Susceptible people: no special people Mode of infection: non-infectious Complications: bleeding disorders, parotid cysts
Cause
Cause of parotid cyst
Cause:
The most common cause: congenital causes, various factors caused by obstruction of the parotid duct, sputum retention. From the parotid ductal epithelium, mainly composed of epidermal-like cells, mucous cells, and intermediate cells (basal-like cells). According to histological features, it is divided into two types: highly malignant (lowly differentiated) and low malignant (highly differentiated). Highly malignant patients are mainly epidermoid cells and intermediate cells. Low-grade malignant cells are mainly differentiated and mature mucus cells and intermediate cells, but these two types are still difficult to distinguish strictly. The intermediate cells can be oriented to epidermal-like cells or mucus. Cell differentiation and development. Whether the tumor has an indefinite or not, it often infiltrates into the surrounding tissue without a clear boundary.
Prevention
Parotid cyst prevention
Mainly to avoid damage and maintain oral hygiene. There are damaged glands left after the operation. If you do not pay attention to maintain oral hygiene, you may have sputum retention and recurrence of cysts.
Complication
Parotid cyst complications Complications, hemorrhagic disease, parotid cyst
Complications such as cyst recurrence and bleeding occur.
Symptom
Parotid cyst symptoms Common symptoms Cyst swelling recurrent infection
1. Mucinous cysts occur in the oral mucosa, small (often the size of soybeans), clear edges, transparent vesicles, no pain, more damage history (local malformation is most common), viscous after rupture White liquid, the mass disappeared temporarily, but the ulceration quickly healed and the mass reappeared.
2. Large parotid cysts (sublingual gland, submandibular gland and parotid gland) are swelling of the affected part, which may have obstructive symptoms (ie, the swelling feeling is increased when eating, gradually relieved after eating), the parotid duct can not squeeze out the secretion, or The discoloration and odor liquid is discharged, and the viscous white liquid is extracted by puncture.
Examine
Parotid cyst examination
1. For small cysts, clinically easy to diagnose, use the "A" examination to confirm the diagnosis.
2. For large volume, it is not easy to distinguish from other lumps, including "B" and "C" items.
Diagnosis
Diagnosis and differentiation of parotid cyst
diagnosis
1. Mucinous gland cyst: a small transparent vesicular mass in the oral mucosa, the bubble content is a thick egg-like liquid; there is a history of partial bite.
2. Large parotid cyst: the site of the disease is located in the corresponding large parotid gland of the oral and maxillofacial region, which is characterized by swelling and obstruction of the site, abnormal secretion of the catheter mouth, sublingual cysts and puncture of egg-shaped viscous fluid; submandibular gland And the parotid cyst was puncture and the liquid was thin; the extract was positive for the starch plum test.
3. Pathological diagnosis confirmed.
Differential diagnosis
It is differentiated from oral and maxillofacial skin samples and epidermoid cysts.
Oral and maxillofacial skin, the clinical manifestations of epidermoid cysts are:
1. Occasionally at the bottom of 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.
