Three-dimensional images contribute to the diagnosis of mucous retention cyst in maxillary sinus

Abstract

Objective: To evaluate the detection of mucous retention cyst of maxillary sinus (MRCMS) using panoramic radiography and cone beam computed tomography (CBCT). Study Design: A digital database with 6,000 panoramic radiographs was reviewed for MRCMS. Suggestive images of MRCMS were detected on 185 radiographs, and patients were located and invited to return for follow-up. Thirty patients returned, and control panoramic radiographs were obtained 6 to 46 months after the initial radiograph. When MRCMS was found on control radiographs, CBCT scans were obtained. Cysts were measured and compared on radiographs and scans. The Wilcoxon, Spearman and Kolmorogov-Smirnov tests were used for statistical analysis. The level of significance was set at 5%. Results: There were statistically significant differences between the two methods (p<0.05): 23 MRCMS detected on panoramic radiographs were confirmed by CBCT, but 5 MRCMS detected on CBCT images had not been identified by panoramic radiography. Eight MRCMS detected on control radiographs were not confirmed by CBCT. MRCMS size differences from initial to control panoramic radiographs and CBCT scans were not statistically significant (p= 0.617 and p= 0.626). The correlation between time and MRCMS size differences was not significant (r = -0.16, p = 0.381). Conclusion: CBCT scanning detect MRCMS more accurately than panoramic radiography. Key words:Mucous cyst, maxillary sinus, panoramic radiograph, cone beam computed tomography.

Evaluation of the frequency of mucous retention cysts in the maxillary sinus in a Turkish population using cone-beam computed tomography

“…17 Radiological imaging detection along with clinical examination is mandatory to define the characteristics, behavior, therapeutic protocol of MRCs and differential diagnose it from other pathologies, such as mucocele, polyp, sinusitis, neoplasm, and odontogenic cyst. 9,18 CBCT is a convenient tool for diagnosis and treatment planning related to MS diseases. 19 It is superior to panoramic imaging and other two-dimensional (2D) conventional methods for the evaluation of maxillo-facial anatomical structures.…”

“…8 Disappearance or spontaneous regression of MRCs is observed in 16%-41% of cases; hence, patients with MRCs should undergo long-term follow-up with no specific treatment, other than those that provide symptomatic relief, if necessary. 9 Radiographically, MRCs appear as well-defined, homogeneous, dome-shaped, radiopaque lesions (no cortical lining), which vary in size and extend through the lumen of the MS. 10 The MRCs commonly emanate from the floor of the sinus and are unilaterally or bilaterally located. 9 Waters' view (occipitomental radiograph) is considered as the ideal conventional imaging method for the evaluation of the MS.…”

“…9 Radiographically, MRCs appear as well-defined, homogeneous, dome-shaped, radiopaque lesions (no cortical lining), which vary in size and extend through the lumen of the MS. 10 The MRCs commonly emanate from the floor of the sinus and are unilaterally or bilaterally located. 9 Waters' view (occipitomental radiograph) is considered as the ideal conventional imaging method for the evaluation of the MS. However, the most inferior and posterior aspects of the sinus are not clearly visible due to the posterior teeth and the alveolar process.…”

“…The high-resolution CBCT images are extremely effective for detailed examinations of the maxillofacial region that are not possible with panoramic radiographs. 13 CBCT is an important tool for the evaluation and planning of treatment based on alterations in the MS. 9,14 The frequency of MRCs varies significantly according to geographical and climatic specificities and differences. 15 In the literature, the prevalence rates of MRCs in various populations significantly vary (1.4%-35.6%) with the different imaging methods used.…”

Clinical and Radiological Assessment and Planning in Sinus Floor Elevation

“…Clinical and radiographic examinations are essential to defi ne alternative treatments and to rule out other pathologies, such as mucocele, polyps, and sinusitis (Donizeth-Rodrigues et al 2013 ).…”