Abstract:Introduction Agger nasi and haller cells are few of the common anatomical variants of Paranasal Sinuses (PNS) . They can cause obstruction of osteomeatal complex and frontal recess and can cause refractive sinusitis. Also these variants can lead to complications during procedures like Functional Endoscopic Sinus Surgery (FESS). Hence, complete knowledge about these variants and imaging features help in early diagnosis and also helps in avoiding complications during surgery. Materials and Method A retrospective… Show more
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