The objective of this study was (a) to investigate the accordance of self-reported and objectively assessed olfactory functioning and (b) to compare performance on cognitive tests of individuals unaware of their olfactory dysfunction with individuals aware of their olfactory status. Two hundred forty participants, constituting two age groups, were evaluated with the Scandinavian Odor Identifica...

OBJECTIVES Patients with smell loss after craniocerebral trauma are known to have some brain abnormalities, but there was no study to analyze the findings according to the time interval between injury and evaluation. We aimed to identify whether the time interval may influence on the findings in the brain. METHODS Medical records of 19 patients with posttraumatic olfactory dysfunction were re...

BACKGROUND All nasal bone fractures have the potential for worsening of olfactory function. However, few studies have studied the olfactory outcomes following reduction of nasal bone fractures. This study evaluates posttraumatic olfactory dysfunction in patients with nasal bone fracture before and after closed reduction. METHODS A prospective study was conducted for all patients presenting wi...

The olfactory sensory network is a unique brain system. Among human sensory systems, only olfaction has a direct connection to the brain and no thalamic relay. In terms of tissue and cellular repair, the olfactory system is unusual, along with the hippocampal dentate gyrus, as an example of central nervous tissue in which neurogenesis persists. Additionally, olfaction has been shown to have an ...

OBJECTIVES/HYPOTHESIS Associations between olfactory function to quality-of-life (QOL) and disease severity in patients with rhinosinusitis is poorly understood. We sought to evaluate and compare olfactory function between subgroups of patients with rhinosinusitis using the Brief Smell Identification Test (B-SIT). STUDY DESIGN Cross-sectional evaluation of a multicenter cohort. METHODS Pati...

BACKGROUND Olfactory dysfunction is a common complaint worldwide. The workup typically includes a detailed history and physical examination, chemosensory tests, and imaging studies. Olfactory dysfunction may be broadly divided into two categories: conductive and sensorineural. Examples of conductive etiologies include sinonasal inflammatory disease or obstructive sinonasal masses, whereas senso...