Fourth branchial pouch
anomalies clinically manifest as a recurrent neck abscess, suppurative thyroiditis, or pseudothyroiditis.
Shidara and colleagues described 2 cases of nasopharangeal cyst and considered them to originate from dorsal portion of 2nd branchial pouch
. Meanwhile Papay and colleagues reported a case of nasopharyngeal branchial cleft and explained that its embryological origin was from the most lateral portion of the 2nd branchial apparatus.
Based on the anatomic location of the mass, clinical presentation, imaging and histopathologic characteristics, a diagnosis of branchial pouch
cyst, similar to second branchial cyst type II-III reported in humans, was made.
sinus tract from the pyriform fossa causing acute suppurative thyroiditis, neck abscess, or both: CT appearance and the use of air as a contrast agent.
Rosal, "Tumors of the neck showing thymic or related branchial pouch
differentiation: a unifying concept," Human Pathology, vol.
develop into the middle ear, tonsils, thymus, and parathyroid glands.
[Laser coagulation in the endoscopic management of fourth branchial pouch
(2) Neonates with large branchial pouch
anomalies have presented with stridor.
The first branchial cleft becomes the external auditory meatus, and the first branchial pouch
gives rise to the middle ear and eustachian tube.
(14.) Ohri AK, Ohri SK, Singh ME Evidence for thyroid development from the fourth branchial pouch
. J Laryngol Otol 1994; 108:71-3.
The third branchial pouch
gives rise to the thymus and the inferior parathyroid glands, and these structures follow a common route during embryogenesis through part of the neck to their final location.
(2) Since then, others have reported similar processes that are believed to be anomalies originating from the fourth branchial pouch