International Frontal Sinus Anatomy Classification (IFAC): evaluation of frontoethmoidal cells prevalence in a Brazilian population.

Objectives: The aim of this study was to evaluate the prevalence of the frontal cell variants according to International Frontal Sinus Anatomy Classification (IFAC), in the population of a Brazilian tertiary hospital, and analyze the reliability of the classification between observers.

Methods: A cross-sectional study in the Hospital de Clínicas of the State University of Campinas, Brazil. One hundred and three Computed Tomography's (CTs) were evaluated by radiologists and otorhinolaryngologist to estimate the prevalence of frontoethmoidal cells according to the IFAC.

Topical tretinoin in chronic rhinosinusitis with nasal polyps: a randomized clinical trial.

Background: Chronic rhinosinusitis with nasal polyps (CRSwNP) is usually treated with corticosteroids, given their anti-inflammatory effects. Unlike the nasal administration, the oral and ocular use of tretinoin, an immunoregulatory drug, is well established. Therefore, tretinoin was thought to act on nasal polyps, and possible adverse and/or therapeutic effects were investigated.

Metastasis to Paranasal Sinuses from Carcinoma of Prostate: Report of a Case and Review of the Literature.

Metastasis from distant primary tumors is extremely rare in the paranasal sinuses with few hundred cases in the literature. Metastatic carcinoma of the prostate is even rarer, despite being one of the most common tumors, with only 24 cases published. In this article, we report a case of a 58-year-old male presenting with epistaxis and nasal obstruction as initial symptoms of a metastatic prostate carcinoma in the ethmoid cells and maxillary sinus.

Slowly progressive invasive rhino-orbito-cerebral aspergillosis: case report and literature review.

This is a report of a patient with aspergillosis infection, which was thought to be a tumoral lesion during its investigation. This is not a common disease in Western countries, and this report should increase our awareness for differential diagnosis of nasal masses. Early diagnosis is desired in order to increase the survival rates.

Correlation between acoustic rhinometry, computed rhinomanometry and cone-beam computed tomography in mouth breathers with transverse maxillary deficiency.

Introduction: To provide clinical information and diagnosis in mouth breathers with transverse maxillary deficiency with posterior crossbite, numerous exams can be performed; however, the correlation among these exams remains unclear.

Objective: To evaluate the correlation between acoustic rhinometry, computed rhinomanometry, and cone-beam computed tomography in mouth breathers with transverse maxillary deficiency.

Methods: A cross-sectional study was conducted in 30 mouth breathers with transverse maxillary deficiency (7-13 y.

Orbital Metastasis of Breast Cancer Mimicking Invasive Fungal Rhinosinusitis.

Introduction. A range of traumatic, vascular, inflammatory, infectious, and neoplastic processes can affect the orbit and its structures. In the area of otolaryngology, the rhino-orbital-cerebral involvement of invasive fungal rhinosinusitis can affect the orbit, which may look like initially a rhinosinusitis or even mimic malignancy.