602 results match your criteria Skull Base Petrous Apex Tumors

[The Anterior Transpetrosal Approach].

No Shinkei Geka 2022 May;50(3):614-624

Department of Neurosurgery, Keio University School of Medicine.

The Anterior transpetrosal approach is a skull base surgical procedure that can provide a wide operative view of the petroclival and the prepontine region. This approach requires one to accurately understand the anatomy of the anterior part of the temporal bone and the histological structure of the dura mater. In addition, it is necessary to learn operative techniques for venous preservation, accurate hemostasis at each step, and prevention of cerebrospinal fluid leakage. Read More

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Skull Base Tumor Mimics.

Neuroimaging Clin N Am 2022 May;32(2):327-344

Department of Radiology, NYU Langone Health, 222 East 41st Street, 5th Floor Radiology, New York, NY 10017, USA. Electronic address:

Many different benign and malignant processes affect the central skull base and petrous apices. Clinical evaluation and tissue sampling are difficult because of its deep location, leaving imaging assessment the primary means for lesion evaluation. Skull base lesions demonstrate a variety of confusing appearances on imaging, creating diagnostic dilemmas. Read More

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[Endoscopic transnasal approach in surgical treatment of petrous temporal bone cholesteatoma extending towards the clivus. Three clinical observations and literature review].

Zh Vopr Neirokhir Im N N Burdenko 2022 ;86(2):97-102

Burdenko Neurosurgical Center, Moscow, Russia.

Petrous temporal bone Cholesteatoma is widely described in the literature and accounts for up to 9% of all neoplasms of this localization. These cholesteatomas rarely spread towards the clivus. Isolated clival cholesteatomas are described only as single cases. Read More

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Anterior Petrosal Approach to Petrous Apex Meningioma: Climbing the Rock-Two-Dimensional Operative Video.

World Neurosurg 2022 Jun 18;162:67. Epub 2022 Mar 18.

Department of Neurosurgery and Skull Base Surgery, Hospital Ernesto Dornelles, Porto Alegre, Brazil.

A 47-year-old woman was referred to the neurological surgery department after a self-limiting episode of dizziness and headache. Magnetic resonance imaging showed an extra-axial mass in the right petrous apex, suggesting a meningioma. We chose the anterior petrosal approach (APA) because meningioma is a benign tumor with brainstem compression, and our goal was total removal for potential cure of the disease. Read More

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Maximal Resection of Tumors Encasing the Internal Carotid Artery and Hindering Internal Carotid Artery Expansion Followed by Revascularization Surgery: A Series of Nine Cases at a Single Tertiary Center.

Front Surg 2022 17;9:808446. Epub 2022 Feb 17.

Department of Neurosurgery, SanBo Brain Hospital, Capital Medical University, Beijing, China.

Purpose: Cerebral reconstruction appears to play a diminished role in managing complex skull base tumors involving vital neurovascular structures.

Materials And Methods: Patients with recurrent or progressive middle cranial fossa tumors treated by radical resection followed by extracranial-to-intracranial (EC-IC) bypass from 2014 to 2019 were included. Balloon test occlusion (BTO) was performed preoperatively. Read More

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February 2022

The mini-combined transpetrosal approach: an anatomical study and comparison with the combined transpetrosal approach.

Acta Neurochir (Wien) 2022 04 1;164(4):1079-1093. Epub 2022 Mar 1.

Department of Neurosurgery, Lariboisière Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France.

Background: The combined transpetrosal approach (CTPA) is a versatile technique suitable for challenging skull base pathologies. Despite the advantages provided by a wide surgical exposure, the soft tissue trauma, complex and time-consuming bony work, and cosmetic issues make it far from patient expectations. In this study, the authors describe a less invasive modification of the CTPA, the mini-combined transpetrosal approach (mini-CTPA), and perform a quantitative comparison between these two approaches. Read More

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Prevalence of Petrooccipital Fissure Fusion: Osteological Study with Application to Approaches to the Skull Base and Imaging Interpretation.

World Neurosurg 2022 Jul 19;163:e53-e58. Epub 2022 Feb 19.

Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, USA; Department of Surgery, Tulane University School of Medicine, New Orleans, Louisiana, USA; Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, Louisiana, USA; Department of Anatomical Sciences, St. George's University, St. George's, Grenada, West Indies; University of Queensland, Brisbane, Australia.

Introduction: The petrooccipital fissure (POF) has relevance to skull base approaches, various tumors and craniosynostoses, and some cases of age-related hearing loss. However, the prevalence of fusion and classification of such is rarely found in the extant medical literature.

Methods: One-hundred and 10 dry human skulls (220 sides) were used for this study. Read More

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Three-Corridors Procedure to Operate in the Infralabyrinthine Cervico-Jugulo-Carotico-Tympanic Area.

ORL J Otorhinolaryngol Relat Spec 2022 3;84(2):147-152. Epub 2022 Feb 3.

Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, Istanbul Medipol University, Istanbul, Turkey.

Introduction: The aim of the study was to present the results of our experience in three-corridors procedures applied for the tumors and inflammatory lesions of the infralabyrinthine cervico-jugulo-carotico-tympanic area.

Methods: The lesions located in the infralabyrinthine cervico-jugulo-carotico-tympanic area were operated in 13 patients using the 3-corridors technique. The anatomical and functional integrity of the external and middle ears and the facial nerve (FN) could be preserved. Read More

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Intraoperative Magnetic Resonance Imaging Assisted Endoscopic Endonasal Resection of Clival Chordomas.

Front Oncol 2021 10;11:733088. Epub 2022 Jan 10.

Department of Neurosurgery, Gazi University Faculty of Medicine, Ankara, Turkey.

Background: Cranial base chordomas are typically indolent and usually appear as encapsulated tumors. They slowly grow by infiltrating the bone, along with the lines of least resistance. Due to its relationship with important neurovascular structures, skull base chordoma surgery is challenging. Read More

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January 2022

From Above and Below: The Microsurgical Anatomy of Endoscopic Endonasal and Transcranial Microsurgical Approaches to the Parasellar Region.

World Neurosurg 2022 Mar 11;159:e139-e160. Epub 2021 Dec 11.

Rosa Ella Burkhardt Brain Tumor Center, Department of Neurosurgery, Neurological Institute, Cleveland Clinic, Cleveland, Ohio, USA.

Introduction: The parasellar region is one of the most complex of the skull base. In this study, we review the anatomy and approaches to this region through a 360° perspective, correlating microsurgical and endoscopic anatomic nuances of this area.

Methods: An endoscopic endonasal approach (EEA) and microsurgical dissections were performed. Read More

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Retrospective analysis of massive epistaxis and pseudoaneurysms in nasopharyngeal carcinoma after radiotherapy.

Eur Arch Otorhinolaryngol 2022 Jun 8;279(6):2973-2980. Epub 2021 Oct 8.

Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Nanchang University, No.17 Yongwaizheng Street, Nanchang, 330006, Jiangxi, China.

Objective: Epistaxis after radiotherapy for nasopharyngeal carcinoma (NPC) is a common clinical critical illness, which often leads to death of patients. This article focuses on the relationship between massive epistaxis and pseudoaneurysm after radiotherapy in patients with NPC and discusses clinically relevant treatment strategies.

Methods: A review was performed in 21 patients with massive epistaxis after radiotherapy for NPC from January 2011 to December 2019, and all of the patients were examined by computed tomography angiography (CTA). Read More

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Microsurgical Resection of Trigeminal Schwannoma via Anterior Petrosal Approach: 2-Dimensional Operative Video.

World Neurosurg 2022 01 2;157:45. Epub 2021 Oct 2.

Departments of Neurosurgery, Mackenzie Evangelical University Hospital, Curitiba, PR, Brazil; Department of Neurosurgery, Federal University of Paraná, Curitiba, PR, Brazil. Electronic address:

Trigeminal schwannomas are complex lesions that may be related to many critical neurovascular structures. We present the case of a 59-year-old male presenting a history of left-sided trigeminal neuralgia. Preoperative imaging demonstrated a mass highly suggestive of a trigeminal schwannoma, and microsurgical resection was indicated considering the progressive symptomatology and important mass effect (Video 1). Read More

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January 2022

Combined Microscopic-Endoscopic Transmastoid Resection of a Petrous Meningioma: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 11;21(6):E528-E529

Department of Neurosurgery, Brigham and Women's Hospital, Harvard School of Medicine, Boston, Massachusetts, USA.

Petrous meningiomas are defined as tumors with a basal dural attachment on the posterior surface of the petrous bone.1 Their insertion can be anterior to the meatus (petrous apex meningiomas), or posterior to the meatus, with associated hyperostotic bony invasion either pre- or retro-meatal.2 These meningiomas are amenable to curative surgical removal and have better surgical outcomes than more medially located true petroclival meningiomas that originate medial to the fifth nerve. Read More

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November 2021

Comparative analysis of the combined petrosal and the pretemporal transcavernous anterior petrosal approach to the petroclival region.

J Neurosurg 2022 Mar 10;136(3):905-916. Epub 2021 Sep 10.

1Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, Arizona; and.

Objective: The combined petrosal (CP) approach has been traditionally used to resect petroclival meningioma (PCM). The pretemporal transcavernous anterior petrosal (PTAP) approach has emerged as an alternative. A quantitative comparison of both approaches has not been made. Read More

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The Minimally Invasive Posterolateral Transcavernous-Transtentorial Approach. Technical Nuances, Proof of Feasibility, and Surgical Outcomes Throughout a Case Series of Sphenopetroclival Meningiomas.

World Neurosurg 2021 11 31;155:e564-e575. Epub 2021 Aug 31.

Department of Cerebrovascular and Skull Base Pathologies, Instituto Nacional de Neurocirugía Dr Asenjo, Universidad de Chile, Santiago, Chile; Department of Neurological Sciences, Universidad de Chile, Santiago, Chile; Department of Neurosurgery, Clinica Las Condes, Santiago, Chile.

Objective: Sphenopetroclival (SPC) meningiomas are considered among the most complex skull-base neoplasms to approach surgically. We aim to determine whether some SPC meningiomas can be safely and effectively treated using a modified minimally invasive pterional posterolateral transcavernous-transtentorial approach (MIPLATTA).

Methods: Fourteen patients harboring SPC meningiomas were surgically treated through a MIPLATTA. Read More

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November 2021

Endoscopic endonasal and transorbital approaches to petrous apex lesions.

J Neurosurg 2022 Feb 20;136(2):431-440. Epub 2021 Aug 20.

Departments of1Neurosurgery.

Objective: The petrous apex (PA) is one of the most challenging areas in skull base surgery because it is surrounded by numerous critical neurovascular structures. The authors analyzed the clinical outcomes of patients who underwent endoscopic endonasal approach (EEA) and transorbital approach (TOA) procedures for lesions involving PA to determine the perspectives and proper applications of these two approaches.

Methods: The authors included patients younger than 80 years with lesions involving PA who were treated between May 2015 and December 2019 and had regular follow-up MR images available for analysis. Read More

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February 2022

Anterior transpetrosal approach: experiences in 274 cases over 33 years. Technical variations, operated patients, and approach-related complications.

J Neurosurg 2022 Feb 13;136(2):413-421. Epub 2021 Aug 13.

2Department of Neurosurgery, School of Medicine, Keio University, Tokyo, Japan; and.

Objective: The anterior transpetrosal approach (ATPA) was initially reported in 1985. The authors' institution has 274 case records of surgery performed with the ATPA during the period from 1984 to 2017. Although many technical advances and modifications in the ATPA have occurred over those 33 years, to the authors' knowledge no articles to date have reported a detailed analysis of variations and complications of the ATPA. Read More

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February 2022

Skull Base Reconstruction Using a Temporoparietal Galeal Flap in Simultaneous Transnasal and Transcranial Surgery for the Prevention of Carotid Blowout Syndrome: A Report of 3 Cases.

J Neurol Surg B Skull Base 2021 Jul 14;82(Suppl 3):e236-e242. Epub 2020 Jan 14.

Department of Neurosurgery, Fukushima Medical University, Fukushima, Japan.

 Carotid blowout syndrome (CBS) is a rare complication that usually occurs after removal of head and neck tumors. Since transnasal skull base surgery allows a wide exposure of the ventral skull base, neurosurgeons should pay attention to prevent this devastating complication. We present, three cases involving exposure of the internal carotid artery (ICA) at the skull base during the simultaneous transnasal and transcranial approach. Read More

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Simpson Grade I Resection of Type II Clinoidal Meningioma Through Cranio-orbital Zygomatic Approach: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 10;21(5):E433-E434

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Clinoidal meningiomas have been considered as a separate entity with distinguishing clinical, radiological, and surgical considerations.1-2 Surgical mortality and morbidity associated with anterior clinoidal meningiomas has remained high in the past, with radical resection considered unattainable.3 However, the extent of surgical removal is clearly the most determining factor in tumor recurrence and progression. Read More

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October 2021

Excision of Greater Superficial Petrosal Nerve Schwannoma Via a Pure Endoscopic Endonasal Approach.

Ear Nose Throat J 2021 Jul 19:1455613211026397. Epub 2021 Jul 19.

Department of Neurosurgery, Skull Base Surgery Center, 71044Xuanwu Hospital, Capital Medical University, Beijing, China.

Greater superficial petrosal nerve (GSPN) schwannomas are an exceedingly rare nerve sheath tumor. The current literature search was conducted using Medline and Embase database by key search terms. Only 31 cases have been reported in the literature so far. Read More

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Microsurgical anatomy of the cranial nerve-centric triangles of the posterior cranial base: cadaveric and radiological anatomical study.

Anat Sci Int 2021 Sep 16;96(4):531-543. Epub 2021 Jun 16.

Department of Neurosurgery, Aurora Neuroscience Innovation Institute, Aurora St. Luke's Medical Center, W Kinnikinic River Pkwy #680, 2801, Milwaukee, WI, 53215, USA.

Tumors in the posterior fossa can be situated either dorsal and lateral, ventral and medial, or occupying both regions in relation to the cranial nerves, with the latter position being especially challenging. In an effort to organize neurovascular complexes contained within, anatomically based triangles have been proposed to serve as guiding landmarks for locating critical neurovascular structures. The objectives of this study were to: (1) provide a review of historical anatomically based vascular-centric triangles of the posterior fossa based on respective neurovascular complexes; (2) introduce a more organized alternative system of triangles with the conceptualization of a projection system from superficial to deep; and (3) propose and describe two new triangles of the posterior fossa: Petrous-Acousticofacial and Acousticofacial-Trigeminal. Read More

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September 2021

Piezosurgery for safe and efficient petrous bone cutting in cerebellopontine angle and petroclival meningioma surgery.

J Clin Neurosci 2021 Jul 21;89:319-328. Epub 2021 May 21.

Department of Neurosurgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.

Intradural petrous bone drilling has become a widespread practice, providing extended exposure in the removal of cerebellopontine angle (CPA) or petroclival tumors. Adjacent neurovascular structures are at risk, however, when drilling is performed in this deep and narrow area. Hence, this study evaluates the use of Piezosurgery (PS) as a non-rotating tool for selective bone cutting in CPA surgery. Read More

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Does general comorbidity impact the postoperative outcomes after surgery for large and giant petroclival meningiomas?

Neurosurg Rev 2022 Feb 12;45(1):617-626. Epub 2021 Jun 12.

Service de Neurochirurgie, CHU Nord, APHM-AMU, Marseille, France.

We assessed the role of the general condition of the patient in addition to usual anatomical reasoning to improve the prediction of personalized surgical risk for patients harboring a large and giant petroclival meningiomas. Single-center, retrospective observational study including adult patients surgically treated for a large and giant petroclival meningioma between January 2002 and October 2019 in a French tertiary neurosurgical skull-base center by one Neurosurgeon. Inclusion criteria were as follows: (1) histopathologically proven meningioma; (2) larger than 3 cm in diameter; (3) located within the upper two-thirds of the clivus, the inferior petrosal sinus, or the petrous apex around the trigeminal incisura, medial to the trigeminal nerve. Read More

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February 2022

Retrosigmoid transhorizontal fissure approach to lateral pontine cavernous malformation: comparison to transpetrosal presigmoid retrolabyrinthine approach.

J Neurosurg 2022 01 11;136(1):205-214. Epub 2021 Jun 11.

Objective: The retrosigmoid (RS) approach is a classic route used to access deep-seated brainstem cavernous malformation (CM). The angle of access is limited, so alternatives such as the transpetrosal presigmoid retrolabyrinthine (TPPR) approach have been used to overcome this limitation. Here, the authors evaluated a modification to the RS approach, horizontal fissure dissection by using the RS transhorizontal (RSTH) approach. Read More

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January 2022

[Clinical application of combined infratemporal fossa approaches for internal carotid artery in petrous bone reconstruction for large lateral skull base tumors].

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021 May;56(5):417-423

Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.

By summarizing the technical points and therapeutic outcomes of combing infratemporal fossa approach (IFA) and internal carotid artery (ICA) reconstruction for the colossal skull base tumor invading ICA in petrous bone, the clinical application value was discussed. Five patients (2 males, 3 females,aging from 27 to 55 years old) who received surgeries between July 2015 and May 2017 for lateral skull base pathology involved petrous ICA using technique combined IFA and pre-reconstruction, were reviewed. Among the five patients, three were paraganglioma of head and neck, one was carotid aneurysms, and one was recurrent adenoid cystic carcinoma (ACC). Read More

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Importance of Sufficient Petrosectomy in an Anterior Petrosal Approach: Relightening of the Kawase Pyramid.

World Neurosurg 2021 09 15;153:e11-e19. Epub 2021 May 15.

Department of Neurosurgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Neurosurgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. Electronic address:

Background: In 1985, Kawase published an anterior petrosal approach to expose the posterior cranial fossa and to minimize retraction of the temporal lobe. However, some neurosurgeons still have difficulty with removing tumors through an anterior petrosal approach because a complete understanding of the Kawase pyramid has not been achieved. We hypothesized that if anterior petrosectomy were performed with three-dimensional understanding of the Kawase pyramid, it would have a positive effect on extent of tumor resection. Read More

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September 2021

Transcavernous Resection of an Upper Clival Chondrosarcoma: "Cavernous Sinus as a Route": 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 05;20(6):E422-E423

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Complete resection of skull base chondrosarcomas offers the potential for a durable, or even lifelong, cure and is best achieved at the first surgery.1,2 When a skull base chondrosarcoma is located at the upper clivus and in the interpeduncular cistern and invading laterally toward the petrous apex and cavernous sinus, the traditional approaches, ie, endonasal endoscopic or middle fossa approaches, are not adequate for the exposure and resection. The transcavernous sinus approach has been utilized to remove tumor from the cavernous sinus and as a corridor to the interpeduncular cistern and upper clivus, originally described for the clipping of basilar apex aneurysms. Read More

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Zygomatic Approach to Cavernous Sinus Chordoma: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 07;21(2):E105-E106

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Chordoma is not a benign disease. It grows invasively, has a high rate of local recurrence, metastasizes, and seeds in the surgical field.1 Thus, chordoma should be treated aggressively with radical resection that includes the soft tissue mass and the involved surrounding bone that contains islands of chordoma. Read More

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Medial Acoustic Tumors: Special Considerations: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 07;21(2):E101-E102

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Medial acoustic tumors are a rare distinct type of vestibular schwannoma having distinguished clinical and radiological features.1 Originating medially in the cerebellopontine angle without extending into the lateral internal auditory meatus, they are frequently giant in size at presentation in younger patients with a relatively preserved hearing, while they have other neurological deficits from cerebellar or brainstem compression and associated hydrocephalus. Imaging typically shows a cystic tumor with local mass effect and an internal auditory canal filled with cerebrospinal fluid. Read More

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Total Petrosectomy for the Total Resection of Sphenopetroclival Meningioma: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 06;21(1):E22-E23

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Sphenopetroclival meningioma is a most formidable meningioma. Many patients have few preoperative deficits and surgery has the potential of severe neurological complications. Surgical treatment is challenging due to brainstem compression, the involvement of multiple cranial nerves and cerebral vessels. Read More

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