Anatomical variations of maxillary and ethmoid sinus in chronic rhinosinusitis

Karthika Rajeev, Ravishankara S., Chethana C. S., Supreetha B. Shenoy, Jyoti .


Background: The objectives of the study were to compare the anatomical variants of maxillary and ethmoid sinus in CT PNS and diagnostic nasal endoscopy, to determine the incidence of variations of maxillary and ethmoid sinus and to determine the association of anatomical variations with extent of the disease.

Methods: Patients with chronic rhinosinusitis attending the outpatient department of otorhinolaryngology, head and neck surgery (ENT-HNS) of KVG Medical College for a period of 12 months from December 2016 to November 2017. 100 consecutive patients with history of CRS subjected for nasal endoscopy and CT-PNS.  

Results: The majority of patients were females. Male to female ratio was 1:1.46. Headache and postnasal drip were the main symptoms (76%). Concha bullosa (42.4%) was most common anatomical variation, which was detected in 59(42.4%) patients on CT PNS and DNE. There was statistically significant correlation between right septal deviation and right maxillary sinusitis (p<0.01), left septal deviation and left maxillary sinusitis (p=0.001) and left deviation and left ethmoid sinusitis (p=0.017). We also found correlation between left Haller cells and left ethmoid sinusitis (p=0.003).

Conclusions: By using diagnostic nasal endoscopy and CT PNS, anatomic variations can be easily identified and aid as a guide map during functional endoscopic sinus surgeries. 


Anatomical variations, Computed tomography, Diagnostic nasal endoscopy

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