Sergio Hassid

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BACKGROUND Diverticulotomy is a standard treatment for Zenker's diverticulum (ZD). This technique was adapted to flexible endoscopy. OBJECTIVE We report our long-term results of ZD treatment by using flexible endoscopy assisted by a soft diverticuloscope. DESIGN Follow-up study. SETTING Academic hospital. Tertiary-care referral center. PATIENTS A(More)
BACKGROUND The aim of this study was to investigate whether an increase in malignancy level is accompanied by significant modifications of the expression of galectin-1, galectin-3, and Thomsen-Friedenreich antigen (T antigen) as well as the expression of binding sites for these three markers in head and neck squamous cell carcinomas (HNSCCs). METHODS(More)
OBJECTIVE To evaluate the possibility that infants sleeping in the prone position have higher arousal thresholds to auditory challenges than when sleeping in the supine position. STUDY DESIGN Polygraphic recordings were performed for 1 night in 25 healthy infants with a median age of 9 weeks. The infants were exposed to white noises of increasing(More)
Hamartoma is a rare, non-neoplastic tumor characterized by an abnormal mixture of tissues, which are indigenous to the region. They are rare in the nasal cavity. We report a 79-year-old woman with an adenomatoid hamartoma in the left nasal cavity associated with nasal polyposis. This association supports the hypothesis that inflammation is one of the(More)
Extracellular nucleotides regulate ion transport and mucociliary clearance in human airway epithelial cells (HAECs) via the activation of P2 receptors, especially P2Y(2). Therefore, P2Y(2) receptor agonists represent potential pharmacotherapeutic agents to treat cystic fibrosis (CF). Nucleotides also modulate inflammatory properties of immune cells like(More)
This paper describes the real-time MRI technique and its use for the study of speech production. The two major problems, (i) the simultaneous recording of the MR images and the speech signal and (ii) the synchronisation of the images and of the speech signal, are addressed. Measurement accuracy on real-time images is evaluated by comparison with similar(More)
BACKGROUND Histopathologic grading and clinical staging cannot provide a precise prognosis of oral cavity cancer patients. The use of glycohistochemical markers may improve the level of prognostic accuracy of such conventional classification systems. METHODS Computer-assisted microscopy was employed in a series of 40 oral cavity cancers to determine(More)
BACKGROUND Recently developed treatments for Zenker's diverticulum include the use of a flexible endoscope, which is minimally invasive. A new endoscopic approach is described that uses a soft diverticuloscope to provide perfect exposure of the operative site and stabilizes the endoscope. METHODS A total of 30 patients (15 men, 15 women; median age, 78(More)
Draf in 1991. The procedure--which is also known as the modified endoscopic Lothrop procedure--aims to create the largest possible anteroposterior and lateral to lateral opening between both frontal sinuses and the nasal cavities. This requires the resection of the medial floor of both frontal sinuses, the intersinus septum and the superior nasal septum.(More)
PURPOSE To analyze the relationship between hearing preservation after gamma knife radiosurgery (GKR) for vestibular schwannoma (VS) and some volumetric and dosimetric parameters of the intracanalicular components of VS. METHODS AND MATERIALS This study included 82 patients with a VS treated by GKR; all patients had no NF2 disease, a Gardner-Robertson(More)