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22 results on '"Cristian Naudy"'

5. Endonasal anatomy of the olfactory neural network: Surgical implications

Author

Diego Servian, Bradley A. Otto, Matias Gomez Galarce, Cristian Naudy, Lucas Lima, Juan C. Yanez-Siller, Ricardo L. Carrau, Alaa S. Montaser, and Daniel M. Prevedello

Subjects
Nasal cavity, Olfactory system, Olfactory Nerve, business.industry, Endoscopy, Cribriform plate, Olfaction, Anatomy, 03 medical and health sciences, 0302 clinical medicine, medicine.anatomical_structure, Otorhinolaryngology, Olfactory nerve, Anterior cranial fossa, Cadaver, otorhinolaryngologic diseases, Humans, Medicine, Nasal Cavity, Nerve Net, 030223 otorhinolaryngology, business, Olfactory epithelium, 030217 neurology & neurosurgery, Nose
Abstract

OBJECTIVES/HYPOTHESIS Define the anatomic distribution of the olfactory filaments within specific mucosal regions of the nasal cavity. STUDY DESIGN Cadaveric study. METHODS Seventeen cadaveric specimens (34 sides) were dissected to study the anatomical distribution and density of olfactory fila within different regions of the nasal cavity. Olfactory fila were dissected retrogradely to their point of entry into the anterior cranial fossa through the cribriform plate. Anatomic relationships among various components of the olfactory system and their corresponding arterial supply were determined subjectively. RESULTS The highest density of olfactory fila was found at the mucosa of the ethmoid roof and superior turbinates. Olfactory fila were found at regions not previously considered to be part of the olfactory system: lateral wall of the nose, ethmoidal bullae, and between the os sphenoidale and arc of the posterior choana. Furthermore, at the septum, 20% of the olfactory fila crossed contralaterally before exiting the nose. The anterior ethmoidal arteries were the primary blood supply to the olfactory epithelium. CONCLUSIONS This study suggests that olfactory filaments extend beyond previously established boundaries. These findings may have clinical implications regarding oncologic resections and could serve as the foundation for the development of techniques that better preserve olfactory function. LEVEL OF EVIDENCE NA Laryngoscope, 2473-2477, 2018.

Published
2018
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6. Endoscopic Approach to Petrous Apex: Clinical Series

Author

Ricardo L. Carrau, G Matias Gomez, Katherine Walker, Bradley A. Otto, Cristian Naudy, Juan C. Yanez-Siller, Daniel M. Prevedello, Alaa S. Montaser, and Homero Sariego

Subjects
Series (mathematics), business.industry, Petrous Apex, Medicine, Neurology (clinical), Anatomy, business
Published
2018
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11. Acute Deafness: A Rare Complication of Shunting

Author

Jorge Mura, Rafael Martinez-Perez, Cristian Naudy, Natalia Rayo, Marco Ramirez, and Agustin Montivero

Subjects
Adult, Male, Reoperation, medicine.medical_specialty, Hearing loss, Schwannoma, Deafness, Ventriculoperitoneal Shunt, Neurosurgical Procedures, 03 medical and health sciences, 0302 clinical medicine, Postoperative Complications, otorhinolaryngologic diseases, Medicine, Humans, business.industry, Emergency department, Audiogram, Neuroma, Acoustic, medicine.disease, Hydrocephalus, Shunt (medical), Surgery, Shunting, 030220 oncology & carcinogenesis, Acute Disease, Neurology (clinical), medicine.symptom, business, Complication, 030217 neurology & neurosurgery
Abstract

Background Mild hearing loss following shunting has been described; however, severe auditory impairment associated with ventriculoperitoneal (VP) shunt is an uncommon, rarely reported phenomenon. Treatment options and pathophysiologic considerations are discussed in this case report. Case Description A 27-year-old man who was treated for an eighth cranial nerve schwannoma with complete resection and a VP shunt 10 years previously presented to the emergency department with acute severe hearing loss and headache. Imaging showed diminished size of the ventricles and dural contrast enhancement. The previous shunt was replaced with a programmable antisiphoning VP shunt. The patient's hearing and headache improved 48 hours later, as demonstrated in serial audiograms. Conclusions Hearing loss is an underestimated complication of shunting that in some cases may progress to severe impairment and deafness. Patients with a VP shunt who experience hearing loss should undergo further evaluation and possibly adjustment of shunt settings.

Published
2017

13. Endoscopic Endonasal Cranial Base Surgery Simulation Using an Artificial Cranial Base Model Created by Selective Laser Sintering

Author

Leo F. S. Ditzel Filho, Ricardo L. Carrau, Bradley A. Otto, Kenichi Oyama, Facundo Van, Daniel M. Prevedello, Ali O. Jamshidi, Mateo Zoli, Daniel G. de Souza, Jun Muto, Cristian Naudy, and Edward E. Kerr

Subjects
Selective laser sintering, medicine.medical_specialty, law, business.industry, Medicine, Neurology (clinical), Cranial base surgery, Base (exponentiation), business, law.invention, Surgery
Published
2014
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18. Olfaction Preservation in Olfactory Grove Meningiomas Operated with Endonasal Endoscopical Technique. A Proposal of a New Surgical Corridor Trough a Cadaveric Study

Author

Bradley A. Otto, Ricardo L. Carrau, Daniel M. Prevedello, Jun Muto, Matteo Zoli, Léo Fernando da Silva Ditzel, Nicolas Gil, Kenichi Oyama, and Cristian Naudy

Subjects
medicine.medical_specialty, business.industry, medicine, Neurology (clinical), Anatomy, Olfaction, Trough (economics), Cadaveric spasm, business, Surgery
Published
2014
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19. The Ventral Endoscopic Anatomy of the Intracavernous Branches of the Internal Carotid Artery and Its Surgical Correlations

Author

Daniel M. Prevedello, Matteo Zoli, Roger Robert, Ricardo L. Carrau, Solari Domenico, Cristian Naudy Martinez, Leo F. S. Ditzel Filho, Bradley A. Otto, Nicolas Gil Guevara, and Conti Michele

Subjects
business.industry, medicine.artery, medicine, Endoscopic anatomy, Neurology (clinical), Anatomy, Internal carotid artery, business
Published
2014
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20. Comparison between the Classic Endonasal Endoscopical Transcribriform Approach for the Olfactory Grove Meningiomas vs. a Pericribiform 'Accordion' Technique Using a Tumor Model in Cadaver Specimens

Author

Léo Fernando da Silva Ditzel, Edward E. Kerr, Cristian Naudy, Nicolas Gil, Jun Muto, Kenichi Oyama, Facundo M. Van Isseldyk, Daniel M. Prevedello, Bradley A. Otto, Ricardo L. Carrau, and Matteo Zoli

Subjects
medicine.medical_specialty, Cadaver, business.industry, medicine, Neurology (clinical), Anatomy, business, Accordion, Surgery
Published
2014
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21. Comparison Anterior Transpetrosal Approach with Endonasal Endoscopic Approach to the Petrosal Apex Lesion

Author

Ditzel Fiho, Bradley A. Otto, Facundo Van, Ali O. Jamshidi, Ricardo L. Carrau, Daniel M. Prevedello, Matteo Zoli, Jun Muto, Edward E. Kerr, Kenichi Oyama, Daniel GoncalvesdeSouza, and Cristian Naudy

Subjects
Lesion, business.industry, medicine, Neurology (clinical), Anatomy, medicine.symptom, business, Transpetrosal approach, Apex (geometry)
Published
2014
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22. Retrosigmoid approach for resection of petrous apex meningioma

Author

Girma Makonnen, Daniel G. de Souza, Leo F. S. Ditzel Filho, Daniel M. Prevedello, Matteo Zoli, Jun Muto, Cristian Naudy, de Souza, Daniel G., Ditzel Filho, Leo F. S, Makonnen, Girma, Zoli, Matteo, Naudy, Cristian, Muto, Jun, and Prevedello, Daniel M.

Subjects
medicine.medical_specialty, Petrous Apex Meningioma, Cerebellopontine Angle, Neurosurgical Procedure, Neurosurgical Procedures, Meningioma, Trigeminal neuralgia, Vertigo, Meningeal Neoplasms, medicine, Humans, Meningeal Neoplasm, biology, business.industry, Petrous Apex, Medicine (all), Cranial nerves, General Medicine, Middle Aged, medicine.disease, biology.organism_classification, Cerebellopontine angle, Magnetic Resonance Imaging, Surgery, Dissection, Treatment Outcome, Female, Neurology (clinical), business, Brain Stem, Human
Abstract

We present the case of a 50-year-old female with a 1-year history of right-side facial numbness, as well as an electric shock-like sensation on the right-side of the face and tongue. She was previously diagnosed with vertigo and trigeminal neuralgia. MRI was obtained showing a large right cerebellopontine angle mass. A retrosigmoid approach was performed and total removal was achieved after dissection of tumor from brainstem and cranial nerves IV, V, VI, VII and VIII. Pathology confirmed the diagnosis of a meningioma (WHO Grade I). The patient was discharged neurologically intact on the third postoperative day free of complications.The video can be found here: http://youtu.be/-tR0FtMiUDg.

Published
2014
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