A patient with chronic unilateral maxillary sinusitis caused by a foreign body (dental amalgam) and mistaken diagnosis of extensive ethmoid neoplasm is presented. The imitation of tumour symptoms was due to a long presence of foreign body in the maxillary sinus and chronic inflammation of maxillary, ethmoid and sphenoid sinuses.

Radiation therapy has been recognized as a useful modality of treatment in head and neck malignant tumors. However, radiation over 10 Gy may predispose to secondary tumors. Radiation-induced osteosarcoma of the ethmoid sinus is unusual. These tumors may present long after radiation with epistaxis. Computed tomography, magnetic resonance imaging, and biopsy are the modalities of diagnosis. We re...

We herein report a young patient with cerebral venous thrombosis (CVT) with clinical and neuroradiological findings of the left maxillary and anterior ethmoid sinusitis. Serial brain MRIs showed cerebral venous infarct and thrombosis in the superior sagittal sinus (SSS). MR angiography demonstrated nonvisualization of SSS and bilateral transverse sinus. According to our knowledge, CVT associate...

nuses for chronic sinusitis is mainly performed to open the narrow bony points and to restore ventilation and internal drainage. Obstruction of the anterior ethmoid cells and the frontal recess by scar tissue or by a granulation polyp is a common cause of recurrent sinusitis after an ethmoid sinus operation (1). Mucocele formation, due to scarring in the frontal recess, may be also a cause of r...

Objective. The goal of the study was to determine the asymmetric distribution of the height of the ethmoid roof (fovea ethmoidalis). Method. We retrospectively reviewed 644 coronal sinus computer tomography (CT) scans. The height of the ethmoid roof was examined for possible lateral differences between the right and left sides. Results. In 221 CT scans (31%), there was an asymmetry between the ...

INTRODUCTION A pneumocele is an abnormal dilation of an air-containing sinus beyond the normal margins of bone, with associated bony thinning. A delayed ethmoid pneumocele after sinus surgery has not previously been reported. METHODS A case report of a patient with a delayed ethmoid pneumocele after sinus surgery. The diagnostic workup, operative approach, and postoperative results were evalu...

BACKGROUND Sinus mucosa abnormalities on image studies, which is the major diagnostic measure for sinusitis, were investigated in patients with nasopharyngeal carcinoma (NPC) after intensity-modulated radiotherapy (IMRT). METHODS A retrospective review of the MRIs for patients with NPC was conducted. Sinus mucosa abnormalities were staged by the Lund-Mackay system. RESULTS A total of 94 pat...

Ossifying fibroma (OF) is a benign fibro-osseous lesion which was first described by Menzel in 1872. It is commonly seen in the head and neck regions and represents an aggressive pattern when the midface and paranasal sinuses are involved. We report a 36 years old white woman with OF in the right ethmoid sinus. Computed Tomography (CT) scan images showed a hyperdense mass. Transnasal endoscopic...

BACKGROUND Ethmoid sinus osteomas are uncommon, benign, osteogenic tumors. The purpose of this retrospective study was to describe their usual clinical presentation and to discuss their surgical management. METHODS The medical records of 25 patients treated for ethmoid osteoma between March 2001 and December 2010 were retrospectively reviewed. RESULTS The average tumor size was 18.5 ± 14 mm...

Introduction: This study aimed to investigate the distribution of ethmoid roof variation and symmetry according to Keros classification.   Materials and Methods: This cross-sectional study assessed the paranasal CT scans of 600 patients over 18 years of age with no history of surgery, trauma, or localized fracture in the ethmoid, nose, and anterior skull...