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References 1. Lund V.J., Stammberger H., Fokkens W.J., Beale T., Bernal-Sprekelsen M., Eloy P., Georgalas C., et al. - European position paper on the anatomical terminology of the internal nose and paranasal sinuses. Rhinol Suppl., 2014; (24):1-34. 2. Som P.M., Park E.E., Naidich T.P., Lawson W. - Crista Galli. Pneumatization Is an Extension of the Adjacent Frontal Sinuses. AJNR Am J Neuroradiol., 2009;30(1):31-33. doi: 10.3174/ajnr.A1291. Epub 2008 Sep 3. 3. Hajiioannou J., Owens D., Whittet H.B. - Evaluation of anatomical variation of the crista galli using

., Saydam B., Karavus M. - The relationship between the sphenoid and the posterior ethmoid sinuses and the optic nerves in Turkish patients. Rhinology, 2004;42:30-34. 5. Terra E.R., Guedes F.R., Manzi F.R., Boscolo F.N. - Pneumatization of the sphenoid sinus. Dento Maxillo Facial Radiology, 2006;35:47-49. 6. Citardi M.J., Gallivan R.P., Batra P.S., Maurer C.R. Jr., Rohlfing T., Roh H.J., Lanza D.C. - Quantitative computer-aided computed tomography analysis of sphenoid sinus anatomical relationships. American Journal of Rhinology, 2004;18:173-178. 7. Tan H.K., Ong Y

References Agabalyan, N. A., Evans, D. J. R., Stanley, R. L. 2013. Investigating tendon mineralization in the avian hind limb: a model for tendon ageing, injury and disease. Journal of Anatomy, 223 , 262–277. Apostolaki, N. E., Rayfield, E. J., Barrett, P. M. 2015. Osteological and soft tissue evidence for pneumatization in the cervical column of the ostrich ( Struthio camelus ) and observations on the vertebral columns of nonvolant, semi-volant and semi-auatic birds. PLoS ONE , 10 (12): e0143834. Barreira, A. S., Lijtmaer, D. A., Tubaro, P. L. 2016. The

. Kazkayasi M, Karadeniz Y, Arikan OK. Anatomic variations of the sphenoid sinus on computed tomography. Rhinology. 2005;43(2):109-14. 9. Haetinger RG, Navarro JAC, Liberti EA. Basilar expansion of the human sphenoidal sinus: an integrated anatomical and computerized tomography study. Eur Radiol. 2006;16(9):2092-9. DOI: 10.1007/s00330-006-0208-3. 10. Idowu OE, Balogun BO, Okoli CA. Dimensions, septation, and pattern of pneumatization of the sphenoidal sinus. Folia Morphol. 2009;68(4):228-32. 11. Wang J, Bidari S, Inoue K, Yang H, Rhoton A. Extensions of the sphenoid sinus

Abstract

BACKGROUND. Signal void, or the absence of signal on MRI sequences, in the sinonasal region may be encountered in fungal rhinosinusitis cases with the aspect of a pseudo-pneumatized sinus, leading to diagnostic errors.

CASE REPORT. We present the case of a 75-year-old woman referred to our clinic for complete and persistent right-sided nasal obstruction. The patient was evaluated using sinus CT and contrast-enhanced head MRI. Opacification of the right maxillary, ethmoid and frontal sinuses as well as of the right nasal fossa were seen on CT, with maxillary sinus expansion and osseous erosion. The MRI showed T2 signal void in the maxillary sinus with extension to the nasal fossa, creating the appearance of a pseudo-pneumatized sinus, and hyperintense signal in the ipsilateral anterior ethmoid and frontal sinuses. The patient underwent endoscopic sinus surgery. The dual imaging evaluation of the patient aided the preoperative differential diagnosis and choosing the surgical approach.

terminology and nomenclature. Ann Otol Rhinol Laryngol Suppl.,, 1995;167:7-16. 8. Stamm A.C., Draf W. - Micro-endoscopic surgery of the paranasal sinuses and the skull base. Berlin, New York: Springer, 2000. 9. Kalavagunta S., Reddy K.T.V. - Extensive maxillary sinus pneumatization. Rhinology, 2003;41(2):113-117. 10. Măru N., Rusu M.C., Săndulescu M. - The conchal recess of the maxillary sinus: a 100 cases CB CT study. Revista Română de Anatomie funcţională şi clinică, macro- şi microscopică şi de Antropologie, 2013;XII:271-275. 11. Sedaghat A.R., Gray S.T., Chambers K

J., Starinsky R., Arensburg B., Kaffe I. - Morphologic characteristics of bony edentulous jaws. J Prosthodont., 2007;16:141-147. 9. Wehrbein H., Diedrich P. - Progressive pneumatization of the basal maxillary sinus after extraction and space closure. Fortschr Kieferorthop, 1992;53:77-83. 10. Sharan A., Madjar D. - Maxillary sinus pneumatization following extractions: a radiographic study. Int J Oral Maxillofac Implants, 2008;23:48-56. 11. Johanson L.Å. - On minimally invasive approaches to sinus lift procedures. Sweden. 2012. Available from: http

;25(6):397–400. DOI: 10.2500/ajra.2011.25.3671. 4. Wexler D, Braverman I, Amar M. Histology of the nasal septal swell body (septal turbinate). Otolaryngol Head Neck Surg. 2006;134(4):596–600. 5. Koo SK, Jung SH, Moon JS, Son H. A case of nasal swell body (septal turbinate) combined with pneumatization of perpendicular plate of the ethmoid bone. J Rhinol. 2016;23(1):70-3. DOI: 10.18787/jr.2016.23.1.70. 6. Elwany S, Salam SA, Soliman A, Medanni A, Talaat E. The septal body revisited. J Laryngol Otol. 2009;123(3):303–8. DOI: 10.1017/S0022215108003526. Epub 2008 Sep 17. 7. Yiğit O

- December 2020 HOW? The endoscopic surgery of the sphenoid sinus can be performed through 3 different technical ap- proaches. The transseptal approach is generally used in hypo- pneumatized sphenoid sinuses in order to reach the anterior sinus wall and it is usually indicated in the sellar region surgery. The transethmoidal approach of the sphenoid is per- formed when there is a complex rhinosinusal pathol- ogy. To the extent that there is a pansinus inflammatory process involved, the transethmoidal approach is indi- cated. We perform a complete ethmoidectomy in

(3):296-302. 4. Roozbahany N.A., Nasri S. - Nasal and paranasal sinus anatomical variations in patients with rhinogenic contact point headache. Auris Nasus Larynx, 2013;40(2):177-83. doi:10.1016/j.anl.2012.07.007. Epub 2012 Jul 31. 5. Bulescu I.A., Munteanu O., Sarbu A.E., Lupu G., Filipoiu F., Diaconescu B., Budu V. - Variability of pneumatization of ethmoid sinuses - concha bullosa - development, common misconceptions and relations to sinus pathology. Revista Romana de Anatomie functionala si clinica, macro- si microscopica si de Antropologie, 2014;8(1):63-66. 6. Aktas D