Bilateral maxillary sinus hypoplasia.

Sachin Khanduri,Sumit Agrawal,Saakshi Chhabra,Swati Goyal

doi:10.1155/2014/148940

Sachin Khanduri, Sumit Agrawal + Show 2 more

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https://doi.org/10.1155/2014/148940

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Abstract

Maxillary sinus hypoplasia (MSH) is an uncommon abnormality of paranasal sinuses noted in clinical practice. Computed tomography (CT) scan helps in diagnosing the anomaly along with any anatomical variation that may be associated with it. MSH is usually associated with other anomalies like uncinate process hypoplasia. Three types of MSH have been described. Type 1 MSH shows mild maxillary sinus hypoplasia, type 2 shows significant sinus hypoplasia with narrowed infundibular passage and hypoplastic or absent uncinate process, and type 3 is cleft like maxillary sinus hypoplasia with absent uncinate process. CT and endoscopic examination usually complement each other in diagnosing MSH.

Highlights

Maxillary sinus hypoplasia (MSH) is an uncommon abnormality that comes across in clinical practice
Patient was unresponsive to antibiotic treatment. After these Computed tomography (CT) paranasal sinuses were done on SIEMENS machine mode SOMATOM
Causes of maxillary sinus hypoplasia are trauma, infection, surgical procedure, irradiation, and congenital anomaly. Congenital anomaly such as Treacher Collins syndrome is associated with unilateral maxillary sinus hypoplasia

Summary

Introduction

MSH is an uncommon abnormality that comes across in clinical practice. It has been reported in 1.73% to 10.4% of patients with sinus symptoms [1]. It sometimes is asymptomatic and is diagnosed on radiological evaluation. Volume of maxillary sinus at birth is 6–8 mm. Volume of maxillary sinus at birth is 6–8 mm3 It increases by 2 mm per year in vertical and lateral dimension and 3 mm in anteroposterior dimension. At 10 years lower boundary of sinus is at the level of nasal cavity floor [2]. As permanent dentition occurs extension of sinus occurs 4-5 mm below the level of nasal cavity inferiorly [3]. Etiology of MSH includes both embryological and acquired causes like trauma or infection causing arrest of sinus pneumatisation [4] (Table 1)

Case Report

Discussion

Findings on imaging

Teaching Point

Conflict of Interests