ABSTRACT
INTRODUCTION: Unilateral sinus disease (USD), and especially unilateral maxillary sinusitis (UMS), is an increasingly common finding in the ear, nose, and throat and maxillofacial practice. The aim of this retrospective study was to describe the clinical features of a series of patients affected by USD and, in particular, UMS due to sinonasal anatomic anomalies and of odontogenic origin. MATERIALS AND METHODS: A total of 292 patients affected by UMS were reviewed. Medical charts, radiological images, and surgical notes were all reviewed, particularly including data on UMS due to sinonasal anatomic anomalies and on UMS of odontogenic origin. RESULTS: A total of 66 patients have been excluded due to a diagnosis of malignant disease or other benign-defined etiology. Forty-eight patients (21.2%) affected by UMS due to sinonasal anatomic anomalies, whereas 178 (78.8%) patients affected by an odontogenic sinusitis. All patients were surgically treated by functional endoscopic sinus surgery, often in combination with a maxillofacial approach. DISCUSSION: UMS of odontogenic origin represented the greater group of USD. Computed tomography scans are always recommended to define UMS etiology (in particular excluding a malignant origin) and also to plan the most adequate surgical treatment.