Endoscopic and radiological assessment of maxillary sinus retention cyst

ABSTRACT

In this study, 30 cases with maxillary sinus cyst were evaluated clinically, radiologically and by maxillary sinus endoscopy. The majority of the cases [19 cases] were asymptomatic and discovered only during radiologic examination for other dental or ENT problems, associated rhinosinus infection account for the symptomatic cases [11 cases]. Paranasal sinus plain X-ray in different views, clearly showed the opacity of cyst as a dome-shaped homogenous density with convex upper border without bone destruction or displacement. Orthopantomogram view, in addition, accurately showed the cyst floor and its relation to the roots of the teeth. Sinuscopy, especially through the inferior meatal approach, directly visualize the cyst as regard its site, size, content and the condition of the surrounding mucosa. In addition, impairment of the sinus drainage by cyst can be accurately assessed and managed endoscopically