Richard A. Lebowitz

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A total of 401 children with severe vesicoureteral reflux (97 with grade III and 304 with grade IV) was entered into the European branch of the International Reflux Study in Children. Of these patients 37 with grade III and 43 with grade IV reflux were allocated to medical treatment as a sideline group because the reflux grade III or IV had improved to(More)
BACKGROUND The relationship between nasal airway function and sleep-disordered breathing (SDB) remains unclear. Although correction of nasal obstruction can significantly improve nighttime breathing in some patients, nasal obstruction may not play a role in all cases of SDB. An effective method of stratifying these patients is needed. Acoustic rhinometry(More)
Mycotoxins are toxic secondary metabolites produced by a variety of fungi including Aspergillus, Alternaria, and Penicillium species. The presence of mycotoxins in sinonasal tissue and secretions and any possible link to chronic rhinosinusitis (CRS) or other diseases of the head and neck have not been reported. The authors performed an exploratory study to(More)
Osseointegrated dental implants are a widely used method of replacing lost or missing teeth. Resorption of the alveolar ridge of the edentulous posterior maxilla may necessitate augmentation before osseointegration to provide adequate bone for implant fixation. This can be accomplished through an intraoral approach to the maxillary sinus, with elevation of(More)
OBJECTIVE Establish the feasibility of a predictive validity study in sinus surgery simulation training and demonstrate the effectiveness of the Endoscopic Sinus Surgery Simulator (ES3) as a training device. STUDY DESIGN Prospective, multi-institutional controlled trial. SETTING Four tertiary academic centers with accredited otolaryngology-head and neck(More)
Endoscopic surgical approaches for chronic frontal sinusitis require the reestablishment of adequate frontal sinus ventilation and drainage for relief of symptoms. After the resection of anterior ethmoid mucosal disease and cellular structure, the anterior to posterior depth of the nasofrontal beak to the base of skull at the insertion of the ethmoidal(More)
BACKGROUND The body of knowledge regarding rhinosinusitis(RS) continues to expand, with rapid growth in number of publications, yet substantial variability in the quality of those presentations. In an effort to both consolidate and critically appraise this information, rhinologic experts from around the world have produced the International Consensus(More)
OBJECTIVES To establish discriminant validity of the endoscopic sinus surgery simulator (ES3) (Lockheed Martin, Akron, Ohio) between various health care provider experience levels and to define benchmarking criteria for skills assessment. DESIGN Prospective multi-institutional comparison study. SETTING University-based tertiary care institution. (More)
Chronic rhinosinusitis (CRS) is defined as a condition lasting for a period greater than 12 weeks, and manifested by an inflammatory response involving the mucous membranes of the nasal cavity and paranasal sinuses, fluids within these cavities, and/or the underlying bone. The mucosal changes that occur in CRS have been well described, and include edema,(More)