Ronald johnson

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The sublingual gland is located on the sublingual depression, resting on the mylohyoid muscle. It is separated ronald johnson the genioglossus revista brasileira medially by Wharton's duct.

Ronald johnson sublingual gland develops later than the other major salivary glands as it first appears in the eighth week of prenatal development. It originates from epithelial buds surrounding the sublingual folds on the floor of the mouth.

These epithelial buds develop into cords, which canalize to form the sublingual ducts and also form the mucous acini. The sublingual glands receive their primary blood supply from the sublingual and ronald johnson arteries, which ronald johnson branches of the lingual artery and facial artery, respectively.

These arteries are both branches of the external carotid ronald johnson. The sublingual vein drains into the lingual vein, which then flows into the internal jugular system. The sublingual glands drain into the submandibular lymph nodes. The submandibular lymphatics comprise 3 to 6 nodes, which are located in the submaxillary triangle, beneath the body of the mandible.

The nodes are palpable on the superficial surface of the submandibular gland. Malignant tumors Diazepam Tablets (Diazepam)- Multum drain into these regional lymph nodes, requiring more extensive neck dissection for the complete treatment of cancer. The sublingual glands shape their parasympathetic input via the chorda tympani nerve, which is a branch of the facial nerve via the submandibular ganglion.

The chorda tympani branches from the motor branch of the facial nerve in the middle ear cavity, which then exits ronald johnson middle ear through the petrotympanic fissure.

The chorda tympani nerve then travels with the lingual nerve to synapse at the submandibular ganglion. The postganglionic fibers reach the sublingual gland, and release acetylcholine and substance P. The sublingual gland is positioned above the mylohyoid muscle and below the mucosa of the floor of the mouth. Sublingual gland hypertrophy may be the result of a congenital absence of the submandibular gland.

Structures most at risk of injury during gland excision are the lingual nerve and Wharton's duct. Ronald johnson ranula can be described as ronald johnson or deep. Simple ranulas are mucous retention cysts located deep to the floor of the mouth but remain above the mylohyoid muscle.

A deep or cervical ranula occurs when the sublingual duct is leaking, and the collecting mucous dissects through the mylohyoid muscle into the submental or lateral neck adjacent tissue planes, forming a pseudocyst. Both are usually caused by ronald johnson trauma that damages the sublingual gland allowing mucous to collect. The ranula presents as a fluctuant, swollen mass at the floor of the ronald johnson with a bluish tint.

If larger, this may lead to dysphagia, however, it is usually painless unless infected. Diagnosis involves a thorough clinical history ronald johnson physical exam. Ultrasound helps to differentiate between a simple or deep ranula as it can confirm the depth above or below the mylohyoid muscle and the overall quality of the lesion. Ultrasound can also identify rupture or ronald johnson of the sublingual gland.

Treatment options include removal of the sublingual gland with ranula excision, marsupialization, or sclerotherapy. Excising the sublingual gland helps to minimize recurrence.

Sublingual gland tumors are usually malignant and comprise about ronald johnson. Adenoid cystic carcinoma and mucoepidermoid carcinoma count as the most common sublingual gland malignancies reported.

Most tumors present with an asymptomatic floor of mouth swelling and present similarly to benign conditions ronald johnson diagnosis difficult. Treatment course ronald johnson commonly includes surgical tumor excision. Taylor stones (calculi) obstructing an excretory duct is a common salivary gland disease. The pathophysiology of salivary calculi is related to salivary stasis and overall inflammation of the excretory duct.

Salivary stones may cause swelling of the duct or gland causing colicky peri-prandial pain. Salivary calculi are manually palpable when lodged in a duct. Ultrasound can aid diagnosis along with adjunctive CT or MR sialography if workup is negative, but suspicion remains high.

Initial treatment is conservative, which comprises ronald johnson hydration and sialagogues. Surgery is only recommended when a conservative approach fails, and symptoms persist. Acute sialadenitis refers to salivary gland inflammation and may be caused ronald johnson bacterial or viral infection.

The inflammation may be accompanied by fever, pain, and gland swelling. If the etiology is a bacterial infection, then antibiotics are recommended. Otherwise, oral hydration and sialagogues ronald johnson indicated.



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