Pterygopalatine nerve

Granulomatosis with polyangiitis is a rare autoimmune disease that affects small to medium-sized blood vessels throughout the body. Here, we present a case of an infratemporal mass that was the result of granulomatosis with polyangiitis. A 51-year-old male presented to the emergency department due to right cheek and facial pain that he had been experiencing for 2 to 3 months. An MRI revealed a mass within the right infratemporal and pterygopalatine fossae extending into the inferior right orbital fissure along the maxillary division of the trigeminal nerve (V2) and the vidian nerve causing concern for malignancy...

BACKGROUND The conflict in Ukraine during the past year has resulted in increased deaths and injuries to soldiers and civilians from military weapons and large and small caliber firearms. Unlike clinicians in some Western countries, until recently, clinicians working in Ukraine hospitals had little experience managing patients with gunshot wounds. CASE REPORT A 16-year-old boy was admitted as an emergency following a gunshot wound to the back of the neck from a Makarov pistol. The gun was reported to have been fired at a distance of more than 15 cm...

BACKGROUND: Injections of local anesthetics into pterygopalatine fossa gained popularity for treating acute and chronic facial pain and headaches. Injury of maxillary artery during pterygopalatine fossa injection can result in pseudoaneurysm formation or acute bleeding. We aimed to identify the optimal approach into pterygopalatine fossa by comparing feasibility and safety of suprazygomatic and two infrazygomatic approaches. METHODS: We analyzed 100 diagnostic CT angiographies of cerebral arteries using 3D virtual reality...

Objective: To examine the feasibility and surgical approach of removing type D trigeminal schwannoma through nasal cavity and nasal sinus under endoscope. Methods: Eleven patients with trigeminal schwannoma who were treated in the Department of Otorhinolaryngology, Qilu Hospital of Shandong University from December 2014 to August 2021 were analyzed retrospectively in this study. There were 7 males and 4 females, aged (47.5±13.5) years (range: 12 to 64 years). The neoplasm involved the pterygopalatine fossa, infratemporal fossa, ethmoidal sinus, sphenoid sinus, cavernous sinus, and middle cranial fossa...

Introduction : Endoscopic Denker's approach involves complete exposure of the anterior, inferior and lateral walls of the maxillary sinus providing access to both infratemporal and pterygopalatine fossa. Open approaches to maxillary sinus may lead to a high chance of cranial nerve dysfunction, trismus and wound healing issues. Surgical methods differ based on pathology, exposure, visualization and extent of clearance of the pathology. Method : The technique and surgical steps of Endoscopic Reverse Denker's approach are presented...

Schwannomas of the sinonasal compartment are rare benign neoplasms of peripheral nerve sheath origin and constitute ~ 4% of all head and neck schwannomas. The presentation may simulate a range of benign and intermediate grade pathologies. Management involves surgical excision via open or endoscopic approach. To describe the clinico-epidemiological characteristics and surgical outcomes in sinonasal region schwannoma patients operated at our institute. The study is a descriptive case series of patients with sinonasal region schwannomas treated at our institution...

Trigeminal neuralgia is a chronic pain condition associated with sharp, shock-like pain in one or more divisions of the trigeminal nerve. For patients who do not respond well to pharmacotherapy, there is growing evidence that Botulinum toxin type A injections into the trigeminal ganglion provide pain relief for several weeks up to several months at a time. One option is to administer injections into the trigeminal ganglion in Meckel's cave by inserting a needle through the Pterygopalatine Fossa using fluoroscopy to guide and confirm the proper needle placement...

The surgical redirection of efferent neural input to a denervated muscle via a nerve transfer can reestablish neuromuscular control after nerve injuries. The role of autonomic nerve fibers during the process of muscular reinnervation remains largely unknown. Here, we investigated the neurobiological mechanisms behind the spontaneous functional recovery of denervated facial muscles in male rodents. Recovered facial muscles demonstrated an abundance of cholinergic axonal endings establishing functional neuromuscular junctions...

We describe presenting clinical and imaging manifestations of SARS-CoV-19-associated rhino-oculo-cerebral mucormycosis (ROCM) in a hospital setting during the second wave of SARS-CoV-19 pandemic in India. Data on the presenting manifestations was collected from March 01 to May 31, 2021. Associations between clinical and imaging findings were explored, specifically: (1) the presence or absence of orbital pain and infiltration of superior orbital fissure on imaging; (2) the presence of unilateral facial nerve palsy and pterygopalatine fossa infiltration and geniculate ganglion signal on contrast magnetic resonance imaging and (3) vision loss and optic nerve findings on imaging...

Introduction  Understanding the anatomic features of the zygomatic nerve is critical for performing the endoscopic transmaxillary approach properly. Injury to the zygomatic nerve can result in facial numbness and corneal problems. Objective  To evaluate the surgical anatomy of the zygomatic nerve and its segments from an endoscopic endonasal perspective for clinical implications of performing the endoscopic transmaxillary approach. Methods  The origin, course, length, and segments of the zygomatic nerve were studied in four specimens from an endonasal perspective...

Objectives  The vidian nerve provides parasympathetic innervation to the nasal cavity and the lacrimal gland. Previous anatomic studies have primarily focused on preservation or severance of the vidian nerve proximal to the pterygopalatine ganglion (PPG). This study aimed to assess its neural fibers within the pterygopalatine fossa after synapsing at the PPG, and to explore potential clinical implications for endoscopic endonasal skull base surgery. Methods  An endonasal transpterygoid approach was performed on eight cadaveric specimens (16 sides)...

Background: Cranial nerve ganglia, which are prone to viral infections and tumors, are located deep in the head, so their detailed anatomy is difficult to understand using conventional cadaver dissection. For locating the small ganglia in medical images, their sectional anatomy should be learned by medical students and doctors. The purpose of this study is to elucidate cranial ganglia anatomy using sectioned images and three-dimensional (3D) models of a cadaver. Methods: One thousand two hundred and forty-six sectioned images of a male cadaver were examined to identify the cranial nerve ganglia...

INTRODUCTION: Trigeminal autonomic cephalalgia (TAC) is a type of one-sided cerebral painful headache, with attacks regularly accompanied by autonomic responses, such as tearing, runny nose, panic, nausea and vomiting on the affected side. Currently, the most common treatment strategies are drugs, nerve grafts and surgery. Clinical understanding of TACs is limited. Here, we report the case of thermocoagulation treatment of the pterygopalatine ganglion in an uncommon TAC under local anesthesia...

Background: The advance of endoscopic surgery has enabled selective section of the postganglionic nerve branches from pterygopalatine ganglion (PPG) as a modification of the vidian neurectomy. Recent microanatomic studies have suggested that the nasal mucosa is also innervated by multiple efferent rami associated with the sphenopalatine artery (SPA) in the procedure "posterior nasal neurectomy." This anatomic cadaveric study aims to identify all postganglionic nerve fibers in the lateral nasal wall which should inform future surgical procedures aimed at interrupting these nerve fibers...

OBJECTIVE: Pain management strategies following palatoplasty vary substantially. Despite efforts to reduce narcotic utilization, specific analgesic regimens are typically guided by surgeon preference. Our aim was to define analgesic variables that affect postoperative narcotic use and time to resumption of oral intake. DESIGN: This is a retrospective review from 2015 to 2018. PATIENTS: Nonsyndromic patients undergoing primary palate repair...

The endoscopic transnasal maxillary sinus approach is usually performed in resecting tumors located in the pterygopalatine fossa and infratemporal fossa, but is rarely used in the resection of lesions in the middle cranial fossa. Because of the complicated anatomical structure of the middle cranial fossa, trigeminal schwannomas (TSs) located in this region are usually dissected through conventional craniotomy surgical approaches; however, the endoscopic transnasal maxillary sinus approach can be used in resection of middle cranial fossa TSs...

OBJECTIVES: Large-scale procedural safety data on pterygopalatine fossa nerve blocks (PPFBs) performed via a suprazygomatic, ultrasound-guided approach are lacking, leading to hesitancy surrounding this technique. The aim of this study was to characterize the safety of PPFB. METHODS: This retrospective chart review examined the records of adults who received an ultrasound-guided PPFB between January 1, 2016, and August 30, 2020, at the University of Florida. Indications included surgical procedures and nonsurgical pain...

AIM: To describe a new, minimally invasive, and safe access to foramen rotundum via the endoscopic endonasal trans-sinusoidal route for trigeminal nerve blockage. MATERIAL AND METHODS: We studied 5 fresh cadavers bilaterally, and 10 pterygopalatine fossae and maxillary nerves using the endoscopic endonasal trans-sinusoidal trans-pterygopalatine approach. RESULTS: The proposed approach enabled the maxillary nerve to be visualized after revealing the foramen rotundum with the help of some craniometric measurements...

BACKGROUND: Ultrasound guided nerve blocks have become a popular tool in the armamentarium for pain physicians because of its advantages over fluoroscopy by offering portable, radiation-free and real-time imaging. But ultrasound guided procedures require training and practice to gain the expertise. There is a scarcity of review articles describing ultrasound guided injections techniques for nerve blocks of the head and neck. OBJECTIVE: To elucidate the anatomy, sonoanatomy, indications, techniques, side effects and complications for the most frequently utilized nerve blocks of the head and neck in chronic pain management...

BACKGROUND: The current classification system of invasive fungal sinusitis (IFS) includes acute (aIFS) and chronic (cIFS) phenotypes. Both phenotypes display histopathologic evidence of tissue necrosis, but differ by presence of angioinvasion, extent of necrosis, and disease progression. aIFS is defined by a rapid onset of symptoms, while cIFS slowly progresses over ≥12 weeks. However, a subset of IFS patients do not fit into the clinical presentation and histopathologic characteristics of either aIFS or cIFS...