Nasal reflexes elicited by mechanical or electrical stimulation of nasal afferents were studied in anesthetized guinea pigs. Probing the nasal cavity of one side evoked a greater activation of the contralateral than the ipsilateral nasal muscles and, occasionally, sneezing. Similarly, electrical stimulation of the ethmoidal nerve often caused sneezing, with a greater activation of the nasal mus...

Corpuscular nerve endings in the nasal respiratory mucosa of the dog were investigated by immunohistochemical staining specific for protein gene product 9.5 by light and electron microscopy. In the nasal respiratory mucosa, complex corpuscular endings, which displayed bulbous, laminar and varicose expansions, were distributed on the dorsal elevated part of the nasal septum and on the dorsal nas...

Aspergillus fumigatus is a ubiquitous soil saphrophyte, and a cause of chronic rhinitis in dogs. Infection of the nasal cavity may develop following inhalation of a large number of fungal spores. The disease spreads throughout the nasal cavity and often extends into the frontal sinuses. Rarely, infection disseminates throughout the body. Sinonasal aspergillosis most often affects young to middl...

The local extension of olfactory groove meningioma into the paranasal sinuses and nasal cavity eroding underlying bone in young patients is considered as an unusual and extremely rare event. We report the case of a 25-year-old female of primary growth of olfactory groove meningioma extension to left ethmoidal sinus and nasal cavity, presented with sudden onset of seizure after delivering a baby...

Objectives. To investigate hemangiomas in the differential diagnosis of the nasal cavity neoplasms, even though it is an extremely rare mesenchymal tumor of the nasal cavity, and the world literature was reviewed. Case Report. A 57-year-old woman applied to our department with a 5-year history of left-sided nasal obstruction without history of epistaxis, nasal packaging, or facial trauma. Anter...

Introduction/Background The paranasal sinuses consist of the maxillary, ethmoid, sphenoid, and frontal sinuses. They communicate with the nasal cavity in the midline and all structures together form a group of air-filled cavities where cancers can arise, grow, and spread without encountering significant barriers to local extension. Cancers of the paranasal sinuses and nasal cavity are rare mali...

The sense of smell is largely dependent on the airflow and odorant transport in the nasal cavity, which in turn depends on the anatomical structure of the nose. In order to evaluate the effect of airway dimension on rat nasal airflow patterns and odorant deposition patterns, we constructed two 3-dimensional, anatomically accurate models of the left nasal cavity of a Sprague-Dawley rat: one was ...

Papillary thyroid carcinoma (PTC) is one of the most commonly diagnosed types of differentiated carcinoma of the thyroid. It is stated that lung is the most common site of metastasis followed by bone. The incidence of paranasal sinus (PNS) metastasis is fairly uncommon in case of thyroid carcinoma. To the best of our knowledge, no case of metastatic PTC to nasal cavity has been reported. In thi...