branchial sinus


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Related to branchial sinus: branchial fistula

branchial sinus

an abnormal cavity or space that opens externally on the inferior third of the neck, anterior to the sternocleidomastoid muscle; it usually results from failure of the second pharyngeal groove and cervical sinus to obliterate.
References in periodicals archive ?
This might have been attributable to a metaplastic change in the normal columnar epithelial lining of the branchial sinus secondary to recurrent inflammation.
The second branchial cleft fistula was completely excised on both sides, and the first branchial sinus responded well to conservative treatment.