Hertz Neck Flashcards
Branchial Cyst
Cervical Lymphoepithelial Cyst
*lateral
The vast majority of these cysts are thought to arise from remnants of the second branchial arch and are most commonly observed in young adults between the ages of 20 and 40
Thyroglossal Duct Cyst
occurs midline
ciliated epithelium
thyroid remnants
a result of incomplete descent of the thyroid analog from the foramen cecum in the base of the tongue.
Paraganglioma
Carotid Body Tumor
Paraganglia are clusters of neuroendocrine cells associated with the sympathetic and parasympathetic nervous systems. As a result, these neoplasms can be seen in various regions of the body
Paravertebral paraganglia
(e.g., organs of Zuckerkandl and, rarely, bladder). Such tumors have sympathetic connections and are chromaffin-positive, a stain that detects catecholamines.
Paraganglia related to the great vessels of the head and neck
the so-called aorticopulmonary chain, including the carotid bodies (most common); aortic bodies; jugulotympanic ganglia; ganglion nodosum of the vagus nerve; and clusters located about the oral cavity, nose, nasopharynx, larynx, and orbit. These are innervated by the parasympathetic nervous system and infrequently release catecholamines.
Salivary Glands
There are three major salivary glands—parotid, submandibular, and sublingual—as well as innumerable minor salivary glands distributed throughout the mucosa of the oral cavity. Inflammatory or neoplastic disease may develop within any of these
Xerostomia
Dry mouth resulting from a decrease in the production of saliva
causes: drugs, chemotherapy, psychosomatic, radiotherapy, salivary gland diseases, systemic diseases
Sialadenitis
inflammation of the salivary glands
Sialadenitis may be induced by trauma, viral or bacterial infection, or autoimmune disease.
Mucoceles are the most common type of inflammatory salivary gland lesion.
The most common form of viral sialadenitis is mumps, in which the major salivary glands, particularly the parotids, are affected.
ranula
Ranula is a term reserved for epithelial-lined cysts that arise when the duct of the sublingual gland has been damaged
common causes of sialolithiasis and nonspecific sialadenitis
S. aureus
streptococcus viridans
most common salivary gland tumor/ parotid tumor
pleomorphic adenoma
most common bilateral salivary gland tumor
warthin’s tumor
most common malignant salivary glad tumor
mucoepidermoid carcinoma
The likelihood of a salivary gland tumor being malignant
is more or less inversely proportional to the size of the gland.
65% to 80% arise within the parotid, 10% in the submandibular gland, and the remainder in the minor salivary glands, including the sublingual glands. Approximately 15% to 30% of tumors in the parotid glands are malignant.
In contrast, approximately 40% of submandibular, 50% of minor salivary gland, and 70% to 90% of sublingual tumors are cancerous
Pleomorphic adenomas are
benign tumors that consist of a mixture of ductal (epithelial) and myoepithelial cells, mixed tumors and therefore they show both epithelial and mesenchymal differentiation.