METHODS: The deep pyriform space was dissected in 12 hemifacial fresh cadaver dissections. Specimens were divided into 3 separate groups. For group 1, dimensions were measured and plaster molds were fashioned to evaluate shape and contour. For group 2, the space was percutaneously injected with dyed hyaluronic acid to examine proximity relationships to adjacent structures. For group 3, the spac...

Acrokeratosis paraneoplastica of Bazex is a rare but important paraneoplastic dermatosis, usually manifesting as psoriasiform rashes over the acral sites. It often precedes diagnosis of the associated malignancy, usually that of upper aerodigestive tract squamous cell carcinoma. We present the case of a patient with a newly diagnosed pyriform sinus tumour and associated acrokeratosis paraneopla...

Background: Analysis of sperm morphology defects (amorphous heads, abnormal acrosome, etc.) is useful for estimating the efficiency spermiogenesis and maturation. An advanced paternal age (more than 40 years) associated with decreasing count reduced motility; however, there little information on effect aging relating to morphological defects. Moreover, searching stable combinations certain in s...

To date, the monospecific Dendrorchis is represented by D. neivai, reported from Brazil and parasitizing Brycon lundi. Dendrorchis retrobiloba n. sp. is described from the swim bladder of Astyanax fasciatus from Cañada del Dragón stream in Montevideo, southern Uruguay (34 degrees 47'S, 56 degrees 14'W), and the emended diagnosis of Dendrorchis is given. The diagnosis of Dendrorchis has been mod...

Promormyromasts were found in the epidermis of the head of the larvae of five species of mormyrids bred in captivity. The promormyromast is a larval electroreceptor belonging to the specific lateral line system. In 12-day-old larvae this electroreceptor is characterized by a single sensory cell and two types of accessory cells. One type of accessory cell has dark cytoplasm, few microtubules, an...

BACKGROUND Conventional endotracheal intubation requires laryngoscopy for a direct view of the glottis. However, laryngoscopy is associated with many potential complications. The aim of the present study was to compare the efficacy and safety of pyriform sinus localization-assisted blind orotracheal intubation with those of conventional laryngoscopic orotracheal intubation. MATERIAL AND METHO...