Model for Nonrelativistic Topological Multiferroic Matter.

We provide a model capable of accounting for the multiferroicity in certain materials. The model's base is on free electrons and spin moments coupled within nonrelativistic quantum mechanics. The synergistic interplay between the magnetic and electric degrees of freedom that turns into the multiferroic phenomena occurs at a profound quantum mechanical level, conjured by Berry's phases and the quantum theory of polarization.

Evaluation of lung function in patients submitted to total laryngectomy.

Introduction: The post-laryngectomy state is characterized by several alterations in lung function. A reliable estimation of lung function can be very useful in laryngectomees to prevent postoperative complications and to evaluate the results of the treatment.

Objective: Characterize the presence of respiratory functional disorders and the functional pattern of laryngectomees through the use of an extratracheal device.

Validation of methodology for assessment of pulmonary function in patients who undergo total laryngectomy.

Background: In patients submitted to laryngectomy, pulmonary complications may lead to death. A simple method with a standardized extratracheal device for the pulmonary assessment of laryngectomized patients would be very useful. The purpose of this study was to validate the methodology for pulmonary assessment in these patients through the application of an adhesive extratracheal device.

Submandibular gland excision.

Objective: to analyze the value of fine needle aspiration and the rates of postoperative complications in patients undergoing resection of the submandibular gland.

Methods: we analyzed the records of patients treated with resection of the gland from January 1995 to December 2008. The data collected included age, gender, findings on clinical history, surgical procedure, results of fine needle aspiration (FNA), pathological diagnosis and complications.

Efficacy of stapler pharyngeal closure after total laryngectomy: A systematic review.

Background: Some primary studies compare manual and mechanical pharyngeal closures after total laryngectomy. The purpose of this study was to evaluate the advantages of the mechanical suture in pharyngeal closure.

Methods: The literature survey included research in MEDLINE, EMBASE, and LILACS.

[Pharyngocutaneous fistula following total laryngectomy].

Unlabelled: Pharyngocutaneous fistula (PCF) is the most common complication after total laryngectomy.

Objectives: To establish the incidence of this complication and to analyze the predisposing factors.

Method: This is a cross-sectional study of a historical cohort including 94 patients who underwent total laryngectomy.

Videolaryngostroboscopy and voice evaluation in patients with rheumatoid arthritis.

Unlabelled: Arthritis may affect the larynx and produce symptoms such as hoarseness and vocal fatigue.

Objective: This paper aimed to evaluate the laryngeal manifestations of rheumatoid arthritis.

Methods: This is prospective study assessed 27 patients with rheumatoid arthritis with the aid of videolaryngostroboscopy, auditory-perceptual analysis of the speech using the GIRBAS scale, acoustic analysis and the Voice Handicap Index questionnaire.

[Neck dissection complications].

Because of the proximity of vital structures, certain complications are inherent to neck dissection (ND) for the treatment of patients with squamous cell carcinoma of the upper aerodigestive tract. To establish the incidence of complications of ND. A cross-sectional retrospective study of patient registries.

Structures constituting the sound source after the treatment of early glottic cancer.

Introduction: We indicate the exclusive radiation therapy as initial approach for T1a glottic tumors, and the frontolateral laryngectomy for the tumors staged as T1b and selected T2 glottic tumors. The videolaryngostroboscopy is a useful tool to analyze the laryngeal structural changes and compensatory motion after the therapeutic approach.

Objectives: To evaluate the endolaryngeal structures of patients who participate in the vibratory sound source after the early glottic cancer treatment through the videolaryngostroboscopy.

[Risk factors for distant metastasis in head and neck cancer].

Objective: To identify risk factors for the development of distant metastasis (MD) among patients with head and neck squamous cell carcinoma (SCC) surgically treated.

Methods: A retrospective study of 253 patients from January, 1997 to December, 2002 was performed. Out of them, 10 patients presented DM during the follow up.

[Prognostic factors and comorbidity impact upon the frontolateral laryngectomy].

Objective: To evaluate the survival rates, comorbidity impact, complications, and treatment failure facts.

Methods: 38 patients clinically staged as T1b / T2N0M0 glottic tumors were analyzed. They underwent frontolateral laryngectomy with reconstruction, from January, 1995 to December, 2006.

Comorbidity measurement in patients with laryngeal squamous cell carcinoma.

Introduction: The evaluation of a cancer patient can be affected by many factors. Cancer patients often have other diseases or medical conditions in addition to their cancer. These conditions are referred to as comorbidities.

[Ophthalmoplegic migraine: MRI findings. Case report].

Ophthalmoplegic migraine is a rare syndrome in which headache is associated with ophthalmoplegia and third, fourth or sixth cranial nerves palsy. It occurs most frequently in childhood and teenagers. At magnetic resonance imaging (MRI) with gadolinium (GD-DTPA) it may be observed a transitory enhancement of the affected nerve.

[Hallervorden Spatz syndrome: magnetic resonance findings. Case report].

Hallervorden-Spatz syndrome is a neurodegenerative disease, autosomic recessive with two clinical features: early and late onset. Psychiatric, pyramidal and extrapyramidal signs are present in the late subtype. We report the case of a 41-old woman with extrapyramidal signs.