A5013250253- Head and Neck Surgical Oncology
- Sinusitis and nasal conditions
- Nasal Surgery and Airway Studies
- Meningioma and schwannoma management
- Pituitary Gland Disorders and Treatments
- Olfactory and Sensory Function Studies
- Facial Trauma and Fracture Management
- Cerebrospinal fluid and hydrocephalus
- Peripheral Nerve Disorders
- Adrenal and Paraganglionic Tumors
- Congenital Ear and Nasal Anomalies
- Neurosurgical Procedures and Complications
- Allergic Rhinitis and Sensitization
- Reconstructive Facial Surgery Techniques
- Oral and Maxillofacial Pathology
- Craniofacial Disorders and Treatments
- Nasolacrimal Duct Obstruction Treatments
- Advanced Chemical Sensor Technologies
- Bone Tumor Diagnosis and Treatments
- Surgical Simulation and Training
- Facial Rejuvenation and Surgery Techniques
- Cross-Border Cooperation and Integration
- Underwater Acoustics Research
- Neurofibromatosis and Schwannoma Cases
- Vascular Malformations Diagnosis and Treatment
Klinik Hirslanden
2014-2024
Universidade do Porto
2022
University of Beira Interior
2022
Hirslanden Private Hospital Group
2022
Centro Hospitalar do Porto
2022
Weatherford College
2021
Center for Pediatric Endocrinology Zurich
2021
University Hospital of Zurich
1998-2003
Medical University of Vienna
1998-1999
University of Zurich
1989-1999
<b>BACKGROUND AND PURPOSE:</b> Defects at the skull base leading to spontaneous CSF rhinorrhea are rare lesions. The purpose of our study was correlate CT and MR findings regarding location content leaks in 27 patients with endoscopic sinus surgery observations. <b>MATERIALS METHODS:</b> Imaging studies intermittent (CT every patient including 10 examinations intrathecal contrast, plain 2 patients, 15 patients) were analyzed retrospectively blinded intraoperative findings. <b>RESULTS:</b>...
This study was performed to determine the variations in branching pattern of sphenopalatine artery medial crista ethmoidalis. Seventy-seven cadaver head sides that had been sectioned sagittally midline with their septum removed were used after injecting pink latex highlight arterial vessels.The mucosa from middle meatus level basal lamella until and its branches seen then examined under microscope identify position branches.The identified 75 specimens. Of these specimens, 73 (97%) 2 or more...
Clival chordomas confront the surgeon with task of resecting an aggressively invasive and destructive tumor in a critical surrounding. For many, mainly smaller, chordomas, transnasal transclival approach is feasible safe surgical access. Larger tumors especially those extensive intradural, retrochiasmal, and/or deep cervical expansion are mostly approached by open craniotomy. Staged procedures also commonly used case expansive growth. We present first single-session combined transcranial to...
Background: The distance between the anterior wall of maxillary sinus and nasolacrimal duct shows a large individual variation. Methodology: To evaluate feasibility accessing through prelacrimal window access (PLWA), series 100 paranasal CT scans from adult patients was analysed retrospectively. border lacrimal (= window) were measured in 200 sides. Results: A more 7 mm found 12.5% sinuses would enable straight forward PLWA. smaller than 7mm larger 3mm present 56.5% sinuses, make surgical...
Assessment of the long-term results surgery for temporal bone paragangliomas with special consideration patient's ability to cope functional deficits.Retrospective review 36 patients who had undergone resection a paraganglioma 10 15 years previously. patients' subjective view outcome and quality life by questionnaire.Clinical records were reviewed regarding size tumor, technique surgery, supportive therapy, tumor recurrence. Patients sent 50-item questionnaire evaluating their preoperative...
The distance between the anterior wall of maxillary sinus and nasolacrimal duct shows a large individual variation.To evaluate feasibility accessing through prelacrimal window access (PLWA), series 100 paranasal CT scans from adult patients was analysed retrospectively. border lacrimal (= window) were measured in 200 sides.A more 7 mm found 12.5% sinuses would enable straight forward PLWA. A smaller than 7mm larger 3mm present 56.5% sinuses, make surgical demanding. In 31.5% or equal to...
To provide an objective method to measure the extent of nasal tip projection and nasolabial angle.We retrospectively studied preoperative postoperative images using a novel approach. The constant position cornea in lateral views diameter iris frontal were used standardize compare digitalized patients before after surgery. We tested this assessment technique digitized slides with saddle nose deformities measured changes their angle. included 63 who had undergone open rhinoplasty I-beam by...
The aim of the study was to determine incidence olfactory disorders before and following nasal paranasal sinus surgery. It a prospective observational study. Over 6-month period, all patients who had been listed for surgery underwent preoperative postoperative evaluation their sense smell. A questionnaire 'Smell Diskettes Test' were used assess olfaction. One hundred eighty-four studied. Preoperatively, 19 (10.3%) an impaired smell (8.1% septoplasty, 6.1% rhinoplasty 17.1% endoscopic...
Background The orthodox endoscopic sinus surgical technique is “one-handed,” which means that the surgeon holds endoscope in one hand and uses free for other instruments or suction. This has its limitations. When there a lot of bleeding when tension needs to be kept on tissue so it can cut cleanly, this best done using both hands. “bimanual” was described >10 years ago, although offers several advantages, rarely used. main reason requirement two trained endoscopists. In prospective...
Loss of olfactory function is one the main symptoms in patients with chronic rhinosinusitis. This prospective, non-randomized interventional study reports five years results olfaction rhinosinusitis who underwent endoscopic sinus surgery conjunction topical medical treatment. Forty-five were evaluated preoperatively, after three months and 34 (76%) them years. Olfactory was assessed by a subjective visual analogue scale, screening test Smell Diskettes measuring N-Butanol threshold. Patient`s...
Hintergrund: Die Prüfung des Geruchssinnes gewinnt zunehmend an klinischer Bedeutung. Basierend auf Riechdisketten, einer neuartigen Applikationsart von Riechstoffen, wurde ein Screeningtest entwickelt und validiert. Material Methode: Grundlage Tests waren 8 verschiedene Riechstoffe, welche mit wiederverwendbaren Disketten appliziert wurden. Der Test konzipiert als triple forced multiple choice test, so dass man Resultat Score 0-8 richtigen Antworten erhielt. Um den zu validieren, dieser bei...
Background: A new procedure, pyriform turbinoplasty, is described and nasal airflow measured before after this procedure in a virtual model. Methodology:Pyriform turbinoplasty the submucosal reduction of bone frontal process maxilla lacrimal bone.It opens part lateral margin valve area with minimal damage to mucosa.The resection can be extended by "nasal wall lateralization" when that joins uncinate behind duct as well base inferior turbinate edge at rim aperture are removed.Nasal was...
The aim of this multicentre study was to systematically analyse the strengths and weaknesses in surgical training for endoscopic sinus surgery (ESS) identify measures that may improve training.Using a structured questionnaire, 133 participants ESS courses seven centres Germany, Switzerland Australia were asked about their experiences during dissection how they perceived course could be improved.Gaining confidence handling instruments endoscopes only problem with little experience ESS....
The endoscopic technique in transnasal skull base surgery offers optimal visualization and free manipulation the surgical field. However, it may cause approach-related sinonasal injury, influencing patients' quality of life (QOL). To minimize rhinological morbidity without restrictions tumor resection, we introduced unilateral transethmoidal-paraseptal approach. In this article, analyzed long-term results outcome technique.Retrospective analysis medical records.Forty-two consecutive patients...
The knowledge of sinonasal vasculature is inevitable in transnasal neurosurgery. We performed an anatomical study on the sphenopalatine artery from perspective skull base procedures.To analyse landmarks artery, arterial corrosion casts (26 head halves) underwent endoscopic phantom surgery. Furthermore, we microsurgical dissection formaldehyde-fixated cadavers with perfusion (14 as well studied Cone Beam CT-scans anonymised patients and (115 sides).In our cadaveric material, foramen located...
Abstract Purpose The current standard endoscopic technique is a high resolution visualisation up to Full HD and even 4 K. A recent development are 3D endoscopes providing 3-dimensional picture, which supposedly gives additional information of depth, anatomical details orientation in the surgical field. Since 3D-endoscopic new, little scientific evidence known whether new provides advantages for surgeon compared 2D-endoscopic FESS. This study compares with commercially available technique....