Congenital absence of one tonsil without any other congenital abnormality: a rare presentation

Congenital absence of one tonsil alone is a rare clinical presentation. Ramsay stated that the tonsil develops at the site of the second pharyngeal pouch because it is a neutral, least disturbed, favorable site in the region of a marked shift in growth1. So disturbance in the region of second pharyngeal pouch due to marked shift in growth during development of face and neck structures may be responsible for congenital absence of tonsil.

 

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