parotid


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Related to parotid: parotid gland

parotid

 [pah-rot´id]
near the ear.
parotid glands the largest of the three main pairs of salivary glands, located on either side of the face, just below and in front of the ears. From each gland a duct, the parotid duct (sometimes called Stensen's duct), runs forward across the cheek and opens on the inside surface of the cheek opposite the second molar of the upper jaw.

The parotid glands are made up of groups of cells clustered around a globular cavity, resembling a bunch of grapes. Small ducts draining each cavity join the ducts of neighboring cavities to form large ducts, which in turn join the parotid duct.

From the system of ducts flows the thin, watery secretion of the parotid glands called saliva, which plays an important role in the process of digestion. As food is chewed the saliva with which it is mixed and moistened makes it possible for the food to be reduced to a substance that can be swallowed.

Controlled by the autonomic nervous system, the secretion of the salivary glands begins whenever the sensory nerves of the mouth, or in some cases nerves located elsewhere in the body, are stimulated.

Salivation may be an involuntary reflex, as when food or even inedible material placed in the mouth starts the flow of the secretion from the glands, or it may be a conditioned reflex, as when the flow is started by the sight, smell, or thought of food.
Disorders of the Parotid Glands. The most common disease affecting the parotid glands is mumps, or epidemic parotitis.

Swelling and tenderness may also result from infections caused by other viruses or bacteria in the glands. Less often, these symptoms indicate a blockage of a duct by either infection or a calculus, in which case the swelling is likely to fluctuate, especially at mealtimes. Though stubborn or recurring cases sometimes require surgery, stones often can be removed by massage. For infections, antibiotics and warm compresses are the usual treatment.

Occasionally additional glandular masses grow in or near a parotid gland. The majority of such growths are mixed tumors, so called because they contain cartilage or other material as well as the usual glandular material. Usually they are benign; occasionally they may be malignant and require surgery.

pa·rot·id

(pă-rot'id),
Situated near the ear; denoting several structures in this neighborhood. Usually refers to the parotid salivary gland.
[G. parōtis (parōtid-), the gland beside the ear, fr. para, beside, + ous (ōt-), ear]

parotid

(pə-rŏt′ĭd)
n.
A parotid gland.
adj.
1. Situated near the ear: the parotid region of the face.
2. Of or relating to a parotid gland.

parotid

adjective Referring to the parotid (gland).
 
noun  Parotid gland; glandula parotidea [NA6].

pa·rot·id

(pă-rot'id)
Situated near the ear; denoting several structures in this neighborhood. Usually refers to the parotid salivary gland.
[G. parōtis (parōtid-), the gland beside the ear, fr. para, beside, + ous (ōt-), ear]

pa·rot·id

(pă-rot'id)
Situated near the ear; denoting several structures in this area.
[G. parōtis (parōtid-), the gland beside the ear, fr. para, beside, + ous (ōt-), ear]
References in periodicals archive ?
Most of the patients presented with swelling in parotid region i.e.
Computed tomography (CT) and ultrasound examination of the parotid region revealed a 3x2.5 cm mass in the left parotid gland.
On gallium-67 (Ga67) scintigraphy, there was mild accumulation in the lesion in the left parotid gland.
Parotid acinic cell carcinoma is a rare, slow-growing, malignant tumor with imaging findings indistinguishable from other parotid tumors.
Our case demonstrates a rare benign tumor mimicking an aggressive parotid mass at initial presentation.
In 2015, De liz et al reported a case of 37 years old female who underwent surgery followed by radiation therapy and remained free of disease after 5 years of follow up.20 Hedge et al reported a case of 42 years old lady with DFSP of parotid region who developed recurrence after 9 months of surgical excision.
Survival in patients with parotid gland carcinoma - Results of a multi-center study.
BLECs are believed to develop due to lymphoid hyperplasia of embryologically sequestered lymphatic tissue within the parotid gland.
The deep lobe of the parotid was excised en bloc with the facial nerve, due to tumor invasion.
Parotid hemangiomas had a negative predictive value of 80.4% (P = .035).
On ultrasonography, a hypoechoic nonvascular and regular contoured mass (with 27x19 mm) which diameter was observed at the location of the right parotid gland was accepted as an abscess (Figure 2).