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Pterygopalatine

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https://www.readbyqxmd.com/read/29090368/changes-in-the-midpalatal-and-pterygopalatine-sutures-induced-by-micro-implant-supported-skeletal-expander-analyzed-with-a-novel-3d-method-based-on-cbct-imaging
#1
Daniele Cantarella, Ramon Dominguez-Mompell, Sanjay M Mallya, Christoph Moschik, Hsin Chuan Pan, Joseph Miller, Won Moon
BACKGROUND: Mini-implant-assisted rapid palatal expansion (MARPE) appliances have been developed with the aim to enhance the orthopedic effect induced by rapid maxillary expansion (RME). Maxillary Skeletal Expander (MSE) is a particular type of MARPE appliance characterized by the presence of four mini-implants positioned in the posterior part of the palate with bi-cortical engagement. The aim of the present study is to evaluate the MSE effects on the midpalatal and pterygopalatine sutures in late adolescents, using high-resolution CBCT...
November 1, 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/29069259/endoscopic-endonasal-approach-for-mass-resection-of-the-pterygopalatine-fossa
#2
Jan Plzák, Vít Kratochvil, Adam Kešner, Pavol Šurda, Aleš Vlasák, Eduard Zvěřina
OBJECTIVES: Access to the pterygopalatine fossa is very difficult due to its complex anatomy. Therefore, an open approach is traditionally used, but morbidity is unavoidable. To overcome this problem, an endoscopic endonasal approach was developed as a minimally invasive procedure. The surgical aim of the present study was to evaluate the utility of the endoscopic endonasal approach for the management of both benign and malignant tumors of the pterygopalatine fossa. METHOD: We report our experience with the endoscopic endonasal approach for the management of both benign and malignant tumors and summarize recent recommendations...
October 2017: Clinics
https://www.readbyqxmd.com/read/29026931/imaging-patterns-of-rhino-orbital-cerebral-mucormycosis-in-immunocompromised-patients-when-to-suspect-complicated-mucormycosis
#3
Peter Raab, Ludwig Sedlacek, Stefanie Buchholz, Stefan Stolle, H Lanfermann
PURPOSE: The aim of this study was to describe radiological imaging findings of a complicated sinusitis, which should raise the suspicion of rhino-orbital-cerebral mucormycosis as being the underlying cause. METHODS: In this retrospective analysis, we describe the cases and imaging findings of 8 patients with proven mucormycosis. These patients presented mostly with new facial or orbital swelling and were referred for imaging to our institution. Magnetic resonance imaging and computed tomography images were classified as abnormal or normal with respect to orbital, paranasal and cerebral signal results...
October 12, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28889233/adenoid-cystic-carcinoma-of-the-cavernous-sinus-otolaryngological-sequelae-of-therapy-case-report
#4
Edyta Dzięciołowska-Baran, Aleksandra Gawlikowska-Sroka
A 60-year-old woman, otherwise in a good health condition, was first admitted to the hospital with a year-long tingling sensations of the right half of the face, which gradually turned into severe neuralgia corresponding to maxillary (V2) and mandibular (V3) branches of the right trigeminal nerve. MRI scans of the head revealed an unusual hyperplastic or inflammatory changes along the brain base, cavernous sinus extending toward the pterygopalatine fossa, and lateral pterygoid on the right side. Meningioma was suspected and neuralgia was treated conservatively...
September 10, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28868197/combined-simultaneous-transcranial-and-endoscopic-endonasal-resection-of-sphenoorbital-meningioma-extending-into-the-sphenoid-sinus-pterygopalatine-fossa-and-infratemporal-fossa
#5
Masahide Matsuda, Hiroyoshi Akutsu, Shuho Tanaka, Akira Matsumura
BACKGROUND: Sphenoorbital meningiomas are surgically challenging because of their nature to extend to adjacent structures. Here, we describe a case of recurrent sphenoorbital meningioma extending into the sphenoid sinus, pterygopalatine fossa, and infratemporal fossa, which was resected using combined simultaneous transcranial and endoscopic endonasal approaches. CASE DESCRIPTION: A 62-year-old man who had 15 years earlier undergone partial resection of a left sphenoorbital meningioma presented with a 1-year history of progressive proptosis of the left eye...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28863111/the-endoscopic-prelacrimal-recess-approach-to-the-pterygopalatine-fossa-and-infratemporal-fossa
#6
Li Gao, Lei Zhou, Zhengshou Dai, Xinsheng Huang
PURPOSE: The authors studied the anatomic importance of the endoscopic prelacrimal recess approach (PLRA) to the pterygopalatine fossa (PPF) and infratemporal fossa (ITF). METHODS: Ten adult heads (20 sides) from cadavers fixed in formalin were dissected using the PLRA. Anatomic dissections were detailed and several crucial landmarks measured. RESULTS: Identification of the infraorbital neurovascular bundle is the crucial step for the detection of other branches of the maxillary artery...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28856438/3d-printing-the-pterygopalatine-fossa-a-negative-space-model-of-a-complex-structure
#7
Ross Bannon, Shivani Parihar, Yiannis Skarparis, Ourania Varsou, Enis Cezayirli
PURPOSE: The pterygopalatine fossa is one of the most complex anatomical regions to understand. It is poorly visualized in cadaveric dissection and most textbooks rely on schematic depictions. We describe our approach to creating a low-cost, 3D model of the pterygopalatine fossa, including its associated canals and foramina, using an affordable "desktop" 3D printer. METHODS: We used open source software to create a volume render of the pterygopalatine fossa from axial slices of a head computerised tomography scan...
August 30, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28838109/endoscopic-endonasal-interdural-middle-fossa-approach-to-the-maxillary-nerve-anatomic-considerations-and-surgical-relevance
#8
Kumar Abhinav, David Panczykowski, Wei-Hsin Wang, Carl H Synderman, Paul A Gardner, Eric W Wang, Juan C Fernandez-Miranda
BACKGROUND: The maxillary nerve (V2) can be approached via the open middle fossa approach. OBJECTIVE: To delineate the anatomy of V2 and its specific segments with respect to the endonasal landmarks. We present the endoscopic endonasal interdural middle fossa approach to V2 and its potential application for the treatment of perineural spread in sinonasal/skull base tumors. METHODS: Five human head silicon-injected specimens underwent bilateral endoscopic endonasal transpterygoid approaches...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28836847/evaluation-of-a-modified-infraorbital-approach-for-a-maxillary-nerve-block-for-rhinoscopy-with-nasal-biopsy-of-dogs
#9
Kristen M Fizzano, Andrew K Claude, Lan-Hsin Kuo, Jeffrey B Eells, Simone B Hinz, Brittany E Thames, Matthew K Ross, Robert L Linford, Robert W Wills, Alicia K Olivier, Todd M Archer
OBJECTIVE To determine whether a maxillary nerve block via a modified infraorbital approach, applied before rhinoscopy and nasal biopsy of dogs, would decrease procedural nociception, minimize cardiorespiratory anesthetic effects, and improve recovery quality. ANIMALS 8 healthy adult hound-type dogs PROCEDURES In a crossover study, dogs received 0.5% bupivacaine (0.1 mL/kg) or an equivalent volume of saline (0.9% NaCl) solution as a maxillary nerve block via a modified infraorbital approach. A 5-cm, 20-gauge over-the-needle catheter was placed retrograde within each infraorbital canal, and bupivacaine or saline solution was administered into each pterygopalatine region...
September 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28749840/computed-tomography-research-relative-anatomy-of-caldwell-luc-approach-in-pterygopalatine-fossa-surgery
#10
Mei Chen Liu, Xiao Rui Yin, Yi Shui Zhang, Wen Yang, Han Wen Zhang, Hao Bo Duan, Jian Ming Liu, Kai Liang Cheng, You Qiong Li
With the development of endoscopic technique, Caldwell-Luc approach has more wide applications and becomes a common method of pterygopalatine fossa (PPF) surgery. Few data can be used in this approach to avoid injuring the vessels and nerves within this area. In this study, the authors used computed tomography to get the coordinates of inferior orbital fissure, foramen rotundum, sphenopalatine foramen, internal opening of pterygoid canal, the strangulation of PPF, and the greater palatine foramen with canine fossa as the origin...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28685074/use-of-the-bioactive-resorbable-plate-system-for-zygoma-and-zygomatic-arch-replacement-and-fixation-with-modified-crockett-s-method-for-maxillectomy-a-technical-note
#11
Shintaro Sukegawa, Takahiro Kanno, Akane Shibata, Kenichi Matsumoto, Yuka Sukegawa-Takahashi, Kyousuke Sakaida, Yoshihiko Furuki
As a surgical approach targeting the pterygopalatine fossa following maxillary cancer due to tumor invasion, Crockett's method is conventional and useful. However, if the tumor is confined to the area between the maxilla and pterygopalatine fossa, it is not necessary to include the zygomatico-orbital in the access osteotomy, and the orbital floor may be preserved. Depending on the range of tumor invasion, the current study reports a more minimally invasive, modified Crockett's surgery that may be considered, which includes resection with modified osteotomy lines and repositioning with fixation of the zygoma and zygomatic arch following maxillary cancer ablation...
July 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28632604/reassessing-the-anatomic-origin-of-the-juvenile-nasopharyngeal-angiofibroma
#12
Colin D McKnight, Hemant A Parmar, Kuanwong Watcharotone, Suresh K Mukherji
OBJECTIVE: A modern imaging review is necessary to further define the anatomic origin of the juvenile nasopharyngeal angiofibroma. METHODS: After institutional review board approval, a search from January 1998 to January 2013 yielded 33 male patients (aged 10-23 years) with pathologically proven juvenile nasopharyngeal angiofibroma lesions, as well as pretreatment computed tomography/magnetic resonance imaging. Juvenile nasopharyngeal angiofibroma involvement was assessed in the following regions: sphenopalatine foramen, pterygopalatine fossa, vidian canal, nasopharynx, nasal cavity, sphenoid sinus, choana, pterygomaxillary fissure/masticator space, orbit, and sphenoid bone...
July 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28576607/extensiometric-analysis-of-strain-in-craniofacial-bones-during-implant-supported-palatal-expansion
#13
Carlos Nelson Elias, Daniel Jogaib Fernandes, Denis Souza Zanivan, Yuri Resende Fonseca
Palatal expansion has several orthodontic and orthopedic applications, such as increasing maxillary transverse dimensions and correcting maxillary atresia, oral breathing, and skeletal cross-bites. Little is known about the strain to which craniofacial bones are submitted when a palatal expander is loaded. The objectives of the present work were to propose a new palatal bone-borne titanium device (expansion screw), to determine patterns of strain distribution in craniofacial bones during palatal expansion and to show the clinical results of a new palatal expander supported by implants...
December 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28571176/juvenile-nasopharyngeal-angiofibroma-a-case-report
#14
Soubhagini Acharya, Choubarga Naik, Siddharth Panditray, Subha Soumya Dany
Juvenile nasopharyngeal angiofibroma is tumour almost exclusively seen in adolescent males, constituting less than 1% of all neoplasms in head and neck. They are benign and locally spreading and are highly vascular in nature and thus prove to be a surgical challenge because of its complex anatomical location. Here, we present a case report of a 18-year-old male presenting with a mass in his left nasal cavity, with recurrent epistaxis and nasal obstruction. Computed tomography imaging revealed a non-encapsulated lobulated heterogeneous mass lesion in the naso-pharynx and left posterior choana of the nasal cavity, extending to pterygopalatine and infratemporal fossa, masseter space of left side...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28556192/microsurgical-anatomy-of-the-maxillary-artery-for-extracranial-intracranial-bypass-in-the-pterygopalatine-segment-of-the-maxillary-artery
#15
O Akiyama, A Güngör, E H Middlebrooks, A Kondo, H Arai
The extracranial-intracranial (EC-IC) bypass using the maxillary artery (MA) has been successfully completed using a radial artery graft but the complicated anatomy and narrow exposure make it difficult. The purpose of this article is to define the microsurgical exposure of the MA through the middle fossa and describe the branches, diameter, and length of the MA available for the EC-IC bypass in the sphenopalatine fossa and anterior part of the infratemporal fossa. 5 cadaveric specimens were dissected bilaterally (10 MA dissections) to define the microsurgical anatomy of the MA through an intracranial approach...
May 27, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28535658/-value-of-the-endoscopic-diagnosis-on-the-lesions-of-the-skull-base-in-postradiotherapeutic-patients-with-nasopharyngeal-carcinoma
#16
J Y Lyu, F Y Liang, P Han, X M Huang
Objective: To evaluate the diagnostic value of the endoscopic biopsy operation to the lesions of the skull base in the patients with nasopharyngealcarcinoma after radiotherapy. Methods: From February 2006 to February 2010, 84 patients with nasopharyngeal carcinoma suffered from the lesions of the skull base after radiotherapy were included in this study. The relationship between the pathologic results of endoscopic biopsies from the skull base and the imaging results by Magnetic Resonance Imaging(MRI) was compared and discussed...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28521351/the-endoscopic-endonasal-transmaxillary-approach-to-meckel-s-cave-through-the-inferior-orbital-fissure
#17
Xin Zhang, Halima Tabani, Ivan El-Sayed, Matthew Russell, Xuequan Feng, Arnau Benet
BACKGROUND: Surgical access to Meckel's Cave (MC) is challenging due to its deep location and surrounding important neurovascular structures. Currently existing endoscopic endonasal (EE) approaches require dissecting near the internal carotid artery (ICA) or require transposition of the pterygopalatine neurovascular bundle. OBJECTIVE: To describe a novel approach to access the anterolateral aspect of the MC using a minimally invasive EE route. METHODS: The EE transmaxillary transinferior orbital fissure approach was simulated in 10 specimens...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28487042/recurrent-plexiform-schwannoma-involving-the-carotid-canal
#18
Kei Ijichi, Masahiro Muto, Ayako Masaki, Shingo Murakami
Plexiform schwannoma (PS) is a rare variety of benign nerve sheath tumor characterized by a multinodular plexiform growth pattern. PS is usually confined to the head and neck or skin. The pre-operative diagnosis of PS is difficult, and this has lead to a common misdiagnosis as a schwannoma. In addition, studies have indicated that an incomplete resection of PS often results in tumor recurrence. Here we describe a rare case of PS presented in the parapharyngeal space. Our case involved a 36-year-old man with swelling of the pharynx, who presented with a soft cervical mass...
May 6, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28434957/amygdalohippocampectomy-via-the-lateral-extended-transsphenoidal-endoscopic-approach-through-the-pterygopalatine-fossa-an-anatomic-study
#19
Pavel Kalinin, Oleg Sharipov, Maxim Kutin, Dmitry Fomichev, Andreis Gavrjushin, Georgiy Polev, Yevgeny Shults, Klementina Avdeeva
BACKGROUND: The lateral extended transsphenoidal endoscopic approach (LETEA) is used to remove tumors located lateral to the cavernous segment of the internal carotid artery under direct visual control and provides access to Meckel cave, pterygopalatine fossa, medial part of the middle cranial fossa, and orbit. We describe an extended transsphenoidal approach to the amygdalohippocampectomy through the pterygopalatine fossa. METHODS: The LETEA to the middle cranial fossa through the pterygopalatine fossa was studied on 3 injected human cadavers at the Burdenko Neurosurgery Institute in Moscow, Russia...
July 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28416992/sphenopalatine-ganglion-block-for-relieving-postdural-puncture-headache-technique-and-mechanism-of-action-of-block-with-a-narrative-review-of-efficacy
#20
REVIEW
Abhijit S Nair, Basanth Kumar Rayani
The sphenopalatine ganglion (SPG) is a parasympathetic ganglion, located in the pterygopalatine fossa. The SPG block has been used for a long time for treating headaches of varying etiologies. For anesthesiologists, treating postdural puncture headaches (PDPH) has always been challenging. The epidural block patch (EBP) was the only option until researchers explored the role of the SPG block as a relatively simple and effective way to treat PDPH. Also, since the existing evidence proving the efficacy of the SPG block in PDPH is scarce, the block cannot be offered to all patients...
April 2017: Korean Journal of Pain
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