Lateral recess cysts in two cases of isolated fourth ventricle

2001 ◽  
Vol 17 (6) ◽  
pp. 363-365 ◽  
Author(s):  
Brian Owler ◽  
Erica Jacobson ◽  
Ian Johnston
Keyword(s):  
Fourth Ventricle ◽  
Lateral Recess ◽  
Isolated Fourth Ventricle

The marionette technique for treatment of isolated fourth ventricle

2013 ◽  
Vol 12 (4) ◽  
pp. 339-343 ◽  
Author(s):  
Pierluigi Longatti ◽  
Elisabetta Marton ◽  
Salima Magrini
Keyword(s):  
Surgical Treatment ◽  
Fourth Ventricle ◽  
Third Ventricle ◽  
Operating Rooms ◽  
Simple Method ◽  
Less Invasive ◽  
Isolated Fourth Ventricle ◽  
Ventricular Catheters ◽  
Endoscopic Aqueductoplasty

Isolated fourth ventricle is not uncommon in complex posthemorrhagic or postinfectious hydrocephalus. When the condition is symptomatic, the current surgical treatment is endoscopic aqueductoplasty, followed by endoscope-assisted placement of a catheter in the fourth ventricle. The authors suggest a very simple method of steering the tip of standard ventricular catheters by using materials commonly available in all operating rooms. The main advantage of this method is that it permits less invasive transaqueductal drainage of trapped fourth ventricles, especially in cases of narrow third ventricle, because the scope and catheter are introduced in sequence and not in a double-barreled fashion. Two illustrative cases are reported.

scholarly journals Bilateral transtentorial herniation and isolated fourth ventricle: A scientific note

2010 ◽  
Vol 58 (6) ◽  
pp. 953 ◽  
Author(s):  
Laszlo Novak ◽  
Istvan Pataki ◽  
Andrea Nagy ◽  
Ervin Berenyi
Keyword(s):  
Fourth Ventricle ◽  
Transtentorial Herniation ◽  
Scientific Note ◽  
Isolated Fourth Ventricle

scholarly journals A Feline Case of Isolated Fourth Ventricle with Syringomyelia Suspected to be Related with Feline Infectious Peritonitis

2007 ◽  
Vol 69 (7) ◽  
pp. 759-762 ◽  
Author(s):  
Masato KITAGAWA ◽  
Midori OKADA ◽  
Tsuneo SATO ◽  
Kiichi KANAYAMA ◽  
Takeo SAKAI
Keyword(s):  
Fourth Ventricle ◽  
Feline Infectious Peritonitis ◽  
Isolated Fourth Ventricle

scholarly journals Isolated fourth ventricle haemorrhage: “think beyond intracranial source’’ unusual presentation of lumbosacral spine arteriovenous malformation presentation

2019 ◽  
pp. 59-62
Author(s):  
Naresh Panwar ◽  
Manish Agrawal ◽  
Ghanshyam Agrawal ◽  
V. D. Sinha
Keyword(s):  
Arteriovenous Malformation ◽  
Fourth Ventricle ◽  
Intraventricular Hemorrhage ◽  
Spinal Column ◽  
Sudden Onset ◽  
Severe Headache ◽  
Vascular Lesions ◽  
Lumbosacral Spine ◽  
Isolated Fourth Ventricle ◽  
Spinal Arteriovenous Malformations

Spinal arteriovenous malformations (SAVMs) are rare vascular lesions and account for about 4% of primary intraspinal masses. Since SAVMs can involve any location along the spinal column and produce a host of different problems, the symptoms are extremely variable. There are few reports of simultaneous cerebral SAH and intraventricular hemorrhage (IVH) following rupture of a spinal AVM (SAVMs). Herein, we present a rare case of Lumbo Sacral spine arteriovenous malformation, which clinically manifests as sudden onset of severe headache and vomiting due to isolated fourth ventricle Hemorrhage (IVH) without cerebral subarachnoid hemorrhage.

Isolated Fourth Ventricle

1989 ◽  
pp. 110-111
Author(s):  
Shizuo Oi ◽  
Satoshi Matsumoto
Keyword(s):  
Fourth Ventricle ◽  
Isolated Fourth Ventricle

scholarly journals In Reply: Isolated Fourth Ventricle: To Shunt or Stent

2018 ◽  
Vol 16 (2) ◽  
pp. E70-E70
Author(s):  
Aaron Mohanty ◽  
Kim Manwaring
Keyword(s):  
Fourth Ventricle ◽  
Isolated Fourth Ventricle

Transcerebellomedullary fissure approach with special reference to the methods of dissecting the fissure

2001 ◽  
Vol 94 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Toshio Matsushima ◽  
Tooru Inoue ◽  
Takanori Inamura ◽  
Yoshihiro Natori ◽  
Kiyonobu Ikezaki ◽  
...  
Keyword(s):  
Fourth Ventricle ◽  
Posterior Margin ◽  
Lateral Wall ◽  
Microsurgical Anatomy ◽  
Optimal Method ◽  
Content Type ◽  
Lateral Recess ◽  
Tela Choroidea ◽  
Opening Method ◽  
Fine Print

Object. The purpose of the present study was to refine the transcerebellomedullary fissure approach to the fourth ventricle and to clarify the optimal method of dissecting the fissure to obtain an appropriate operative view without splitting the inferior vermis. Methods. The authors studied the microsurgical anatomy by using formalin-fixed specimens to determine the most appropriate method of dissecting the cerebellomedullary fissure. While dissecting the spaces around the tonsils and making incisions in the ventricle roof, the procedures used to expose each ventricle wall were studied. Based on their findings, the authors adopted the best approach for use in 19 cases of fourth ventricle tumor. The fissure was further separated into two slit spaces on each side: namely the uvulotonsillar and medullotonsillar spaces. The floor of the fissure was composed of the tela choroidea, inferior medullary velum, and lateral recess, which form the ventricle roof. In this approach, the authors first dissected the spaces around the tonsils and then incised the taenia with or without the posterior margin of the lateral recess. These precise dissections allowed for easy retraction of the tonsil(s) and uvula and provided a sufficient view of the ventricle wall such that the deep aqueductal region and the lateral region around the lateral recess could be seen without splitting the vermis. The dissecting method could be divided into three different types, including extensive (aqueduct), lateral wall, and lateral recess, depending on the location of the ventricle wall and the extent of surgical exposure required. Conclusions. When the fissure is appropriately and completely opened, the approach provides a sufficient operative view without splitting the vermis. Two key principles of this opening method are sufficient dissection of the spaces around the tonsil(s) and an incision of the appropriate portions of the ventricle roof. The taenia(e) with or without the posterior margin of the lateral recess(es) should be incised.

Anatomic Landmarks of the Glossopharyngeal Nerve: A Microsurgical Anatomic Study

Neurosurgery ◽  
2003 ◽  
Vol 52 (6) ◽  
pp. 1400-1410 ◽  
Author(s):  
M. Faik Özveren ◽  
Uğur Türe ◽  
M. Memet Özek ◽  
M. Necmettin Pamir
Keyword(s):  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Infratemporal Fossa ◽  
Cranial Nerves ◽  
Transverse Process ◽  
Styloid Process ◽  
Jugular Foramen ◽  
Glossopharyngeal Nerve ◽  
Lateral Recess ◽  
Cochlear Aqueduct

Abstract OBJECTIVE Compared with other lower cranial nerves, the glossopharyngeal nerve (GPhN) is well hidden within the jugular foramen, at the infratemporal fossa, and in the deep layers of the neck. This study aims to disclose the course of the GPhN and point out landmarks to aid in its exposure. METHODS The GPhN was studied in 10 cadaveric heads (20 sides) injected with colored latex for microsurgical dissection. The specimens were dissected under the surgical microscope. RESULTS The GPhN can be divided into three portions: cisternal, jugular foramen, and extracranial. The rootlets of the GPhN emerge from the postolivary sulcus and course ventral to the flocculus and choroid plexus of the lateral recess of the fourth ventricle. The nerve then enters the jugular foramen through the uppermost porus (pars nervosa) and is separated from the vagus and accessory nerves by a fibrous crest. The cochlear aqueduct opens to the roof of this porus. On four sides in the cadaver specimens (20%), the GPhN traversed a separate bony canal within the jugular foramen; no separate canal was found in the other cadavers. In all specimens, the Jacobson's (tympanic) nerve emerged from the inferior ganglion of the GPhN, and the Arnold's (auricular branch of the vagus) nerve also consisted of branches from the GPhN. The GPhN exits from the jugular foramen posteromedial to the styloid process and the styloid muscles. The last four cranial nerves and the internal jugular vein pass through a narrow space between the transverse process of the atlas (C1) and the styloid process. The styloid muscles are a pyramid shape, the tip of which is formed by the attachment of the styloid muscles to the styloid process. The GPhN crosses to the anterior side of the stylopharyngeus muscle at the junction of the stylopharyngeus, middle constrictor, and hyoglossal muscles, which are at the base of the pyramid. The middle constrictor muscle forms a wall between the GPhN and the hypoglossal nerve in this region. Then, the GPhN gives off a lingual branch and deepens to innervate the pharyngeal mucosa. CONCLUSION Two landmarks help to identify the GPhN in the subarachnoid space: the choroid plexus of the lateral recess of the fourth ventricle and the dural entrance porus of the jugular foramen. The opening of the cochlear aqueduct, the mastoid canaliculus, and the inferior tympanic canaliculus are three landmarks of the GPhN within the jugular foramen. Finally, the base of the styloid process, the base of the styloid pyramid, and the transverse process of the atlas serve as three landmarks of the GPhN at the extracranial region in the infratemporal fossa.

167 Isolated Fourth Ventricle

Neurosurgery ◽  
2012 ◽  
Vol 71 (2) ◽  
pp. E566 ◽  
Author(s):  
Aaron Mohanty ◽  
Satyanarayana Satish ◽  
Kim H. Manwaring
Keyword(s):  
Fourth Ventricle ◽  
Isolated Fourth Ventricle
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