A four-month-old, male, intact French Bulldog was presented with bilateral purulent nasal discharge and difficulties in breathing. congenital pyriform aperture stenosis closure of both cavities diagnosed. The surgically opened through a midline approach, covered metallic stent (CMS) inserted each cavity to prevent the newly constructed airway from obstructing. Seven weeks after implantation, le...

UNLABELLED Lymph node metastases (LNM) are common in hypophariyngeal carcinomas; the neck dissection is an important therapeutic approach. AIM to analyze the incidence and distribution of LNM and failures in treating the contralateral neck. METHODS a retrospective study of 174 patients with hypopharyngeal cancer treated from 1978 to 2003. The distribution of LNM and regional recurrences wer...

Bilateral lesions were made in three groups of rats, selectively destroying the corticomedial amygdala, the pyriform cortex, or the dorsal stria terminalis. During Phase 1 of the experiment, the behavior of each rat was observed in an open-field apparatus for 4 consecutive days for 5 min per day. This phase permitted an evaluation of exploration that occurs when a rat is forced into contact wit...

The original description of Myxobolus longisporus Nie et Li, 1992, the species infecting gills of Cyprinus carpio haematopterus L., is supplemented with new data on the spore morphology and pathogenicity. Spores are elongate pyriform with pointed anterior end, 15.7 (15.5-16.5) microm long, 6.7 (6-8) microm wide and 5.5 microm thick. Sutural ridge is straight and narrow. Mucus envelope is lackin...

Glutamic acid decarboxylase (GAD), the synthesizing enzyme for the neurotransmitter GABA, has been localized in goldfish retina using a new antiserum. We observed at least six types of GAD-immunoreactive amacrine cells, one of which was large and pyriform (Ab type). In addition, immunoreactive synaptic terminals were located throughout the inner plexiform layer (IPL). Amacrine cells that were G...

A myxosporean parasite in the gill lamellae of the freshwater teleost fish, Sciades herzbergii (Ariidae) (Block, 1794), from the Poti River (Northeast of Brazil) was described by light and electron microscopy studies. Polysporic histozoic cyst-like plasmodia containing several life-cycle stages, including mature spores, were observed. The spores were pyriform and uninucleate, measuring 9.15 +/-...

BACKGROUND AND STUDY AIMS Multiple squamous cell carcinomas (SCCs) frequently arise in the upper aerodigestive tract, referred to as the field cancerization phenomenon. The aim of this study was to elucidate the detailed clinical features of second primary head and neck (H&N) SCCs arising in patients with esophageal SCC. PATIENTS AND METHODS A total of 818 patients underwent endoscopic resect...

squamous cell carcinoma comprises 95% of laryngeal carcinomas. it is usually detected by laryngoscopic evaluation. imaging plays an important role in the evaluation of submucosal extension and staging of this malignancy. supraglottic, glottic and sublottic regions are separately evaluated. in supraglottic region extension of the mass to preepilottic and paraglottic spaces and cartilges invasion...