antrochoanal polyp

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Antrochoanal Polyp
5

Antrochoanal Polyp

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This antrochoanal polyp originated from within the left maxillary sinus. Note the stalk of the polyp as it enters the nasal cavity via an accessory maxillary sinus ostium located in the anterior nasal...

Left Antrochoanal Polyp 2
5

Left Antrochoanal Polyp 2

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The left choana is totally occluded by this large antrochoanal polyp which originated from the left maxillary sinus..

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