Anatomic variations of surgical importance in ethmoid labyrinth and sphenoid sinus. A study of radiological anatomy

Is There any Relationship Between Nasal Septal Deviation and Concha Bullosa

“…In the literature, the incidence of CB is reported as 21 to 29% of chronic sinusitis patients (13)(14)(15). However, in the some studies, this incidence was found as 53.6% to 55% of patients with paranasal sinus disease (8,16).…”

Complex Concha Bullosa

“…The most common anatomical variation in the region of osteomeatal complex is concha bullosa. It's prevalence change from 13.2% to 72.2% in different articles [1][2][3][4][5][6][7] and between 33.8% and 72.6% in symptomatic cases respectively [4].…”

CBCT Imaging of Paranasal Sinuses and Variations

“…In case of extensive pneumatization as a continuation of the ethmomaxillary plate, a thin-walled separating partition between the sphenoid and maxillary sinus is called sphenomaxillary plate (SMP) (Figure 9) [25,45,46]. It is important to identify this anatomic variation which may be mistaken for posterior ethmoid cells during transantral ethmoidectomy and increases the risk of inadvertent entry to the sphenoid sinus [45].…”

“…It is important to identify this anatomic variation which may be mistaken for posterior ethmoid cells during transantral ethmoidectomy and increases the risk of inadvertent entry to the sphenoid sinus [45]. Reported incidence of the SMP was 11 [45], 14 [46], and 15% [19]. …”