International journal of pediatric otorhinolaryngology
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Int. J. Pediatr. Otorhinolaryngol. · Mar 2005
Case ReportsThree-dimensional CT angiography imaging of vascular tumors of the head and neck.
To evaluate the utility of three-dimensional (3D) computerized tomography angiography (CTA) in head and neck vascular anomalies. ⋯ Three-dimensional CTA allows detailed description of vascular lesions of the head and neck and offers another effective means of imaging these complex lesions.
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Int. J. Pediatr. Otorhinolaryngol. · Mar 2005
The potential inflammatory role of arginase and iNOS in children with chronic adenotonsillar hypertrophy.
Nitric oxide (NO) induced tissue damage has been implicated in the pathogenesis of several diseases. Although recurrent/chronic tonsillitis and hypertrophy are still the most frequent surgical procedures carried out on children in order to cure these pathologies, etiopathogenetic mechanisms underlying these entities are still unknown. We aimed to investigate the potential inflammatory role of NO regulatory enzymes, arginase and inducible nitric oxide synthase (iNOS), in children with adenotonsillar hypertrophy. ⋯ The results of the present study supports that L-arginine:NO pathway may be key the participant in the pathogenesis of chronic adenotonsillar disease; arginase and iNOS activities are altered in children with adenotonsillar hypertrophy and this alteration improves after tonsillectomy.