pharyngeal pouch


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Related to pharyngeal pouch: Pharyngeal arches

pharyngeal pouch

Any of a series of five pairs of entodermal outpocketings that develop in lateral walls of the pharynx of the embryo. Synonym: branchial pouch
See also: pouch

pharyngeal pouch

A blind-ending sac of mucous membrane, bulging backwards and downwards from a point near the junction of the PHARYNX and the OESOPHAGUS, through a weakness in the muscle wall. The pouch fills with food causing persistent discomfort, a sense of incomplete swallowing and some danger that food may enter the LARYNX. Treatment is by surgical removal and repair of the wall deficit.

pharyngeal

pertaining to the pharynx.

pharyngeal abscess
an abscess in the wall of the pharynx causing painful and difficult swallowing, pain on palpation, cough and if sufficiently large, the signs of pharyngeal obstruction.
pharyngeal cyst
subepiglottic cysts (remnants of thyroglosssal duct) and cysts on dorsum of pharynx and soft palate (remnants of craniopharyngeal ducts) may cause obstruction of the pharynx in the horse.
pharyngeal diverticulum
a small, 3-4 cm, midline diverticulum dorsal to the pharyngeal opening of the esophagus. Found only in pigs. It can become impacted with dried food and cause dysphagia.
pharyngeal dysphagia
see oropharyngeal dysphagia.
pharyngeal hypophysis cyst
a distended remnant of the pharyngeal anlage of the pituitary gland. It may protrude into the nasopharynx and obstruct respiration.
pharyngeal lymphadenopathy
enlargement of the pharyngeal lymph nodes, due to abscess, neoplasia, e.g. bovine viral leukosis, or hyperplasia and granuloma in chronic pharyngitis, is a possible cause of pharyngeal obstruction.
pharyngeal lymphoid hyperplasia
there is hyperplasia of lymphoid follicles on the roof of the pharynx thought to be a sequel of an upper respiratory tract virus infection. Clinically there is a chronic cough and a poor racing performance and the lesions can be observed via a fiberoptiscope.
pharyngeal neoplasia
a high incidence of squamous cell carcinoma in the mouth, pharynx and rumen is recorded in several countries, some associated with grazing on bracken. Chronic dysphagia and tympany result.
pharyngeal obstruction
characterized by noisy breathing, difficult swallowing, coughing and the coughing up of food. In dogs and cats pawing at the mouth is usual. There is no regurgitation through the nostrils. Manual or endoscopic examination of the interior of the pharynx is necessary. A common cause is foreign body impaction. See also throat abscess (1), pharyngeal cyst and pharyngeal lymphadenopathy (above), pharyngeal polyp (below) and impaction of the pharyngeal diverticulum (above) in pigs.
pharyngeal paralysis
presents a syndrome similar to pharyngeal obstruction with coughing, inability to swallow, but with no signs of pain or respiratory obstruction. See also cud dropping.
pharyngeal phlegmon
a peracute peripharyngitis, most commonly of cattle, characterized by profound toxemia, respiratory distress, swelling and pain of the throat area, painful cough and high fever. Fusobacterium necrophorum is usually present in the lesion. Called also intermandibular cellulitis.
pharyngeal polyp
a fibrous or mucoid, usually pedunculated mass that causes intermittent pharyngeal obstruction.
pharyngeal pouch
one of the paired bilateral outpockets of the embryonic pharynx located opposite external branchial clefts and separated from each other by the developing visceral or branchial arches.
pharyngeal reflex
gag reflex.
pharyngeal swab
References in periodicals archive ?
Persistent pharyngeal pouch derivatives in the neonate.
Fourth pharyngeal pouch remnant presented as a neck mass.
The chorda tympani nerve comes off rostrally, courses ventrally to the first pharyngeal pouch, and enters the mandibular arch.