aggressive malignancy arising from the nasal cavity and paranasal sinuses. Sinonasal undifferentiated carcinoma was first reported in 1986 by Frierson et al, and since then less than 100 cases have been reported in the literature.1 One previous pediatric case has been described in a 12-year-old boy in India.2 Sinonasal undifferentiated carcinoma is histologically classified as part of a spectru...

Our nose, paranasal sinuses, as well as the throat (pharynx) are part of the upper respiratory tract, which consists of two parts. Anatomically, the external and internal parts of the nose can be illustrated. The first consists of nasal bones and nasal cartilages and the internal nose is formed by the nasal cavity and the nasal concha also known as turbinates (choanae), are separated by the nas...

Serious infection in the paranasal sinuses may present with symptoms suggestive of neurological disease and thus lead to delay in the diagnosis and subsequent treatment. We present three such cases in whom the initial diagnoses had been acute optic neuritis, a posterior communicating aneurysm and an intracranial space occupying lesion. The fourth patient had meningitis but the paranasal sinuses...

Sarcomatoid carcinoma of nasal cavity and paranasal sinuses is an extremely rare malignant neoplasm. We report a case of sarcomatoid carcinoma arising in the left-side nasal cavity and paranasal sinuses in a 65-year-old man who was hospitalized for left-side nasal epistaxis, odor sensation. Histopathologic examination revealed the tumor was composed of pleomorphic spindle and round cells with f...

The characteristics of the paranasal sinuses (maxillary, frontal, sphenoid and ethmoid sinuses) are information great relevance to Forensic Sciences, as their images can be used for human identification purposes. Due particularities, provide valuable identification, reducing risk errors during investigation by experts. Such structures visualized from several imaging exams. This study evaluates ...

The aims of this study are to determine the intra-observer and inter-observer agreement between the two radiologists when reporting the Waters view and 3 views series of the paranasal sinus radiographs. To also determine whether a single Waters view is adequate for diagnostic purpose of sinusitis. 90 sets of paranasal sinuses radiographs were reported by two radiologists independently. The resu...

A paranasal sinus mucocele is an epithelial-lined, mucus-containing sac that completely fills the and forms expandable cystic structure. It most commonly affects frontal ethmoidal sinuses, rarely maxillary sphenoid sinuses. Orbital displacement or external disfigurement resulting from expansion of ethmoid sinuses common; however, facial asymmetry caused by bone remodeling rare. We describe a ca...

The bovine paranasal sinuses are a group of complex cavernous air-filled spaces, lined by respiratory epithelium, the exact function of which is unclear. While lesions affecting these sinuses are occasionally reported in cattle, their microbial flora has not been defined. Furthermore, given that the various bacterial and viral pathogens causing bovine respiratory disease (BRD) persist within he...