A 46-year-old Chinese male with history of nasopharyngeal carcinoma (NPC), treated by radiotherapy 7 years ago, was referred to our clinic complaining of progressive blurred vision and limited right ...
Sinuses are air-filled sacs (empty spaces) on either side of the nasal cavity that filter and clean the air breathed through the nose and lighten the bones of the skull. There are four paired sinuses ...
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