Ann Otol Rhinol Laryngol
January 1989
First branchial cleft cysts develop as a result of incomplete fusion of the cleft between the first and second branchial arches and give rise to two distinct anomalies, termed type I and type II anomalies. Type I anomalies are purely ectodermal while type II anomalies exhibit ectodermal and mesodermal elements. The type II anomaly incorporates some portion of the first and second arch as well as the cleft.
View Article and Find Full Text PDFUltrasound has been utilized for diagnostic purposes for the past ten years. It was originally utilized mainly in ophthalmology and obstetrics and gynecology, although recently it has proven invaluable in diagnosis of cardiac and abdominal diseases. While there have been some reports on its use in thyroid and parotid diseases, there are few reports on its general use in the diagnosis of head and neck diseases.
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