Migratory neurocysticercosis mimicking a third ventricular colloid cyst

2001 ◽  
Vol 95 (1) ◽  
pp. 122-123 ◽  
Author(s):  
Steven D. Wray ◽  
Thomas L. Ellis ◽  
Sabatino Bianco
Keyword(s):  
Preoperative Diagnosis ◽  
Histopathological Examination ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Foramen Of Monro ◽  
Radiographic Findings ◽  
Content Type ◽  
Intracranial Lesions ◽  
Microsurgical Approach ◽  
Mental Decline

✓ The authors report on a case of solitary neurocysticercosis located in the anterior third ventricle of a 21-year-old Hispanic man who presented with progressive headache, nausea, and mental decline. The appearance of the lesion on computerized tomography and magnetic resonance studies was typical of that of a colloid cyst, which was the presumptive preoperative diagnosis. A transcortical-transventricular microsurgical approach was used, and inspection of the anterior third ventricle via the ipsilateral foramen of Monro revealed no lesion. Inspection of the floor of the ipsilateral lateral ventricle revealed the intact cyst, which had migrated since the preoperative studies had been obtained. The lesion was removed intact, and histopathological examination confirmed the diagnosis of neurocysticercosis. The authors review the radiographic findings in this case and further illustrate the potential for neurocysticercosis to masquerade as other intracranial lesions.

Frameless neuronavigation in intracranial endoscopic neurosurgery

2001 ◽  
Vol 94 (1) ◽  
pp. 72-79 ◽  
Author(s):  
Henry W. S. Schroeder ◽  
Wolfgang Wagner ◽  
Wolfgang Tschiltschke ◽  
Michael R. Gaab
Keyword(s):  
Third Ventricle ◽  
Colloid Cyst ◽  
Endoscopic Approach ◽  
Arachnoid Cysts ◽  
Tumor Biopsy ◽  
Foramen Of Monro ◽  
Endoscopic Neurosurgery ◽  
Content Type ◽  
Multiloculated Hydrocephalus ◽  
Fine Print

Object. Frameless computerized neuronavigation has been increasingly used in intracranial endoscopic neurosurgery. However, clear indications for the application of neuronavigation in neuroendoscopy have not yet been defined. The purpose of this study was to determine in which intracranial neuroendoscopic procedures frameless neuronavigation is necessary and really beneficial compared with a free-hand endoscopic approach. Methods. A frameless infrared-based computerized neuronavigation system was used in 44 patients who underwent intracranial endoscopic procedures, including 13 third ventriculostomies, nine aqueductoplasties, eight intraventricular tumor biopsy procedures or resections, six cystocisternostomies in arachnoid cysts, five colloid cyst removals, four septostomies in multiloculated hydrocephalus, four cystoventriculostomies in intraparenchymal cysts, two aqueductal stent placements, and fenestration of one pineal cyst and one cavum veli interpositi. All interventions were successfully accomplished. In all procedures, the navigational system guided the surgeons precisely to the target. Navigational tracking was helpful in entering small ventricles, in approaching the posterior third ventricle when the foramen of Monro was narrow, and in selecting the best approach to colloid cysts. Neuronavigation was essential in some cystic lesions lacking clear landmarks, such as intraparenchymal cysts or multiloculated hydrocephalus. Neuronavigation was not necessary in standard third ventriculostomies, tumor biopsy procedures, and large sylvian arachnoid cysts, or for approaching the posterior third ventricle when the foramen of Monro was enlarged. Conclusions. Frameless neuronavigation has proven to be accurate, reliable, and extremely useful in selected intracranial neuroendoscopic procedures. Image-guided neuroendoscopy improved the accuracy of the endoscopic approach and minimized brain trauma.

Third ventricular xanthogranulomas clinically and radiologically mimicking colloid cysts

1994 ◽  
Vol 81 (4) ◽  
pp. 605-609 ◽  
Author(s):  
Stephen B. Tatter ◽  
Christopher S. Ogilvy ◽  
Jeffrey A. Golden ◽  
Robert G. Ojemann ◽  
David N. Louis
Keyword(s):  
Mr Imaging ◽  
Histopathological Examination ◽  
Third Ventricle ◽  
Contrast Material ◽  
Colloid Cyst ◽  
Mr Images ◽  
Intravenous Contrast ◽  
Content Type ◽  
Stereotactic Aspiration ◽  
Colloid Cysts

✓ Two cases are reported of third ventricle masses that were clinically and radiographically indistinguishable from pure colloid cysts. A 21- and a 36-year-old man presented with 5-year and 10-day histories of headache, respectively. Magnetic resonance (MR) imaging revealed smooth, homogeneous masses in the anterior third ventricle that were iso- to hyperintense on T1-weighted MR images and hyperintense on T2-weighted images. There was little enhancement with intravenous contrast material. In both patients, craniotomies were performed and histopathological examination revealed xanthogranulomas of the choroid plexus with only microscopic foci of colloid cyst-like structures. These cases illustrate that xanthogranulomas of the third ventricle may clinically and radiologically mimic pure colloid cysts, that a range of MR imaging signals can be seen, and that craniotomy rather than stereotactic aspiration is the indicated treatment.

Colloid cysts of the third ventricle

1974 ◽  
Vol 40 (2) ◽  
pp. 230-235 ◽  
Author(s):  
John R. Little ◽  
Collin S. MacCarty
Keyword(s):  
Third Ventricle ◽  
Normal Pressure ◽  
Colloid Cyst ◽  
Cerebral Vein ◽  
Diagnostic Study ◽  
Progressive Dementia ◽  
Foramen Of Monro ◽  
Content Type ◽  
The Third ◽  
Colloid Cysts

✓ Thirty-eight cases of colloid cyst of the third ventricle are reviewed. Headache was the most frequent complaint but a strong positional relationship, supposedly a pathognomonic feature of this tumor, was seldom seen. A combination of progressive dementia and gait disturbance without evidence of papilledema, resembling the clinical picture in “normal-pressure” hydrocephalus, was present in eight patients. Sudden deterioration and death occurred in four cases; two other deaths were precipitated by lumbar puncture and pneumoencephalography. Ventriculography was the most reliable diagnostic study. Both the demonstration of dilatation of the lateral ventricles and an upward convexity in the initial segment of the internal cerebral vein in five of the 10 angiograms performed were highly suggestive of tumor. Removal of the colloid cyst through a cortical incision in the non-dominant hemisphere was carried out in 21 cases; in six it was necessary to enlarge the foramen of Monro by dividing the ipsilateral anterior column of the fornix. There were three deaths in the early and two in the late postoperative period. The main complication associated with the transventricular approach was the development of seizures.

Intrapontomesencephalic colloid cyst: an unusual location

2001 ◽  
Vol 94 (1) ◽  
pp. 118-121 ◽  
Author(s):  
Servet Inci ◽  
Nidal Al-Rousan ◽  
Figen Söylemezoglu ◽  
Özdemir Gurçay
Keyword(s):  
Histopathological Examination ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Cystic Mass ◽  
Surgical Removal ◽  
Content Type ◽  
Transsylvian Approach ◽  
First Case ◽  
Nerve Paresis ◽  
Fine Print

✓ Colloid cysts appear most commonly in the third ventricle; the occurrence of a colloid cyst in the brainstem is very unusual. The authors report on a patient with an intrapontomesencephalic colloid cyst. This 15-year-old girl complained of a headache associated with diplopia. Her neurological examination revealed right-sided sixth nerve paresis and a mild left hemiparesis. Radiological investigations revealed an intraparenchymal pontomesencephalic cystic mass. Surgical removal of the lesion was achieved via the pterional transsylvian approach and the patient experienced an excellent recovery. Histopathological examination revealed that the lesion was a typical colloid cyst. To the best of the authors' knowledge, this is the first case in which an intraparenchymal upper brainstem colloid cyst was surgically excised totally. In addition to describing this case, the authors also review other brainstem neuroepithelial cysts described in the literature and briefly discuss the concept of their origin.

A new method of ultrasonic guidance of neuroendoscopic procedures

2002 ◽  
Vol 96 (3) ◽  
pp. 628-632 ◽  
Author(s):  
Martin Strowitzki ◽  
Michael Kiefer ◽  
Wolf-Ingo Steudel
Keyword(s):  
Third Ventricle ◽  
Tumor Resection ◽  
Colloid Cyst ◽  
Third Ventriculostomy ◽  
Outer Diameter ◽  
Intraventricular Tumor ◽  
Tumor Biopsy ◽  
Foramen Of Monro ◽  
Content Type ◽  
Fine Print

✓ The authors present a newly designed device for ultrasonic guidance of neuroendoscopic procedures. It consists of a puncture adapter that attaches to a rigid endoscope having an outer diameter of 6 mm and is mounted on a small, bayonet-shaped ultrasound probe. This adapter directs the movement of the endoscope precisely within the ultrasonic field of view. The targeted region is identified by transdural insonation via an enlarged single burr-hole approach, and the endoscope is tracked in real time throughout its approach to the target. The procedure has been performed in 10 patients: endoscopic ventriculocystostomy in four cases; removal of a colloid cyst of the third ventricle in two cases; and intraventricular tumor biopsy, intraventricular tumor resection, third ventriculostomy, and removal of an intraventricular hematoma in one case each. The endoscope was depicted on ultrasonograms as a hyperechoic line without disturbing echoes and, consequently, the target (cyst, ventricle, or tumor) was safely identified in all but one case, in which intraventricular air hid a colloid cyst in the foramen of Monro. The method presented by the authors proved to be very effective in the guidance and control of neuroendoscopic procedures. Combining this method with image guidance is recommended to define the entry point of the endoscope precisely.

Fetal nondopaminergic neural implants in parkinsonian primates

1991 ◽  
Vol 74 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Krzysztof S. Bankiewicz ◽  
Robert J. Plunkett ◽  
David M. Jacobowitz ◽  
Irwin J. Kopin ◽  
Edward H. Oldfield
Keyword(s):  
Dopaminergic Neurons ◽  
Neural Implants ◽  
Behavioral Recovery ◽  
Foramen Of Monro ◽  
Caudate Nuclei ◽  
Content Type ◽  
Primate Brain ◽  
Brain Implants ◽  
Microsurgical Approach ◽  
Fine Print

✓ Implantation of fetal dopamine-containing tissue into preformed cavities in the caudate nucleus of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonian monkeys leads to behavioral recovery. Recovery may be related to two sources of dopamine: the grafted cells and/or the sprouted fibers from host dopaminergic neurons. The authors undertook this study to determine whether behavioral recovery requires release of dopamine by the implanted tissue, and to establish if nondopaminergic fetal central nervous system implants can induce sprouting of dopamine fibers in the primate brain and cause behavioral recovery. Rhesus monkeys with MPTP-induced hemiparkinsonism or full parkinsonism and a stable neurological deficit were used for this study. Cavities were created in the caudate nuclei anterior to the foramen of Monro via an open microsurgical approach. Fetal cerebellum or spinal cord was implanted into the preformed cavities of three monkeys. Control parkinsonian monkeys showed no recovery. However, implant-induced improvement was stable for up to 6 months after implantation. Sprouted dopaminergic fibers oriented from the ventral striatum and nucleus accumbens were found in the area of the tissue implant in the animals that received fetal grafts but were not present in the control monkeys. It is concluded that brain implants do not need to contain dopamine to induce functional recovery in MPTP-induced parkinsonian primates. Implant-induced and trophic factor-mediated dopaminergic sprouting by the host brain plays a role in the behavioral recovery and may well be responsible for the clinical improvement seen in parkinsonian patients after brain implants.

scholarly journals Third ventricular colloid cyst causing acute hydrocephalus during early pregnancy: Clinical lessons from a case

2021 ◽  
Vol 12 ◽  
pp. 54
Author(s):  
Ching Chung Foo ◽  
Pasquale Gallo ◽  
Chandrasekaran Kaliaperumal
Keyword(s):  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
False Negative ◽  
Colloid Cyst ◽  
Radiological Investigation ◽  
Foramen Of Monro ◽  
Acute Hydrocephalus ◽  
Healthy Neonate ◽  
Trimester Pregnancy ◽  
Colloid Cysts

Background: Colloid cysts of third ventricle are rare lesions which may present with symptoms of acute hydrocephalus. We report a case of acute obstructive hydrocephalus secondary to third ventricular colloid cyst and its management during 1st trimester pregnancy. Case Description: A 31-years-old lady presented to the emergency department with reduced consciousness. Computed tomography head showed obstructive hydrocephalus and an obstructing lesion near foramen of Monro suggestive of third ventricle colloid cyst. She underwent endoscopic resection of colloid cyst. Her pregnancy was only confirmed after surgery and she delivered a healthy neonate at full term. She has remained clinically well and had resumed her work as a general practitioner. Conclusion: This case illustrates that urinary pregnancy test may show false negative result but pregnancy should not preclude radiological investigation and neurosurgical intervention in patients with deteriorating neurological function.

Purely Endoscopic Resection of Colloid Cysts

2008 ◽  
Vol 62 (suppl_1) ◽  
pp. ONS51-ONS56 ◽  
Author(s):  
Jeremy D.W. Greenlee ◽  
Charles Teo ◽  
Ali Ghahreman ◽  
Bernard Kwok
Keyword(s):  
Endoscopic Resection ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Foramen Of Monro ◽  
The Third ◽  
Colloid Cysts ◽  
Study Support

Abstract Objective: To further assess the safety and long-term efficacy of endoscopic resection of colloid cysts of the third ventricle. Methods: A retrospective review of a series of 35 consecutive patients (18 male, 17 female) with colloid cysts treated by endoscopic surgery was undertaken. Results: The mean patient age was 32.4 years (range, 11–54 yr). Headache was the most common presenting symptom (22 patients). The average tumor size was 18 mm (range, 3–50 mm). The endoscopic technique could not be completed in six patients, necessitating conversion to an open craniotomy and a transcortical approach to the colloid cyst. All patients had histologically confirmed colloid cysts of the third ventricle, and complete resection of the lesion was confirmed macroscopically and radiologically in all patients. There were no deaths. Two patients developed aseptic meningitis without any permanent sequelae. One patient developed unilateral hydrocephalus attributable to obstruction of the foramen of Monro, which was treated with endoscopic septum pellucidotomy. The median follow-up period was 88 months (range, 10–132 mo). There was one asymptomatic radiological recurrence. No seizures occurred after surgery. Conclusion: The results of this study support the role of endoscopic resection in the treatment of patients with colloid cysts as a safe and effective modality. In some cases, conversion to an open procedure may be required. Additional follow-up will be required to continue to address the duration of lesion-free survival.

Neuroepithelial (colloid) cyst of the third ventricle in identical twins

1986 ◽  
Vol 65 (3) ◽  
pp. 401-403 ◽  
Author(s):  
Abdel Wahab M. Ibrahim ◽  
Hisham Farag ◽  
Mohammed Naguib ◽  
Ezzeldin Ibrahim
Keyword(s):  
Cerebrospinal Fluid ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Colloid Cyst ◽  
Content Type ◽  
The Third ◽  
Colloid Cysts ◽  
Fluid Pathway ◽  
Ocular Signs ◽  
Fine Print

✓ Colloid cysts of the third ventricle are described in middle-aged twin brothers. One of them presented with recurrent attacks of headache. In this patient the cyst had reached a size large enough to obstruct the cerebrospinal fluid pathway, resulting in hydrocephalus. The twin brother, although asymptomatic, was suspected of the anomaly and investigated because of the similarity of his ocular signs. The diagnosis was confirmed by computerized tomography in both the patient and his brother. The latter proved to have a smaller colloid cyst situated anteriorly in the third ventricle with no obstructive hydrocephalus. The patient was successfully operated on, while the brother is still under observation. Both brothers have had bilateral cataracts, retinal detachments, and left lateral rectus palsies. The familial occurrence of colloid cysts and their association with these ocular findings have apparently not been described before.

Combined endoscopic transforaminal-transchoroidal approach for the treatment of third ventricle colloid cysts

2014 ◽  
Vol 120 (6) ◽  
pp. 1471-1476 ◽  
Author(s):  
Maurizio Iacoangeli ◽  
Lucia Giovanna Maria di Somma ◽  
Alessandro Di Rienzo ◽  
Lorenzo Alvaro ◽  
Davide Nasi ◽  
...  
Keyword(s):  
Third Ventricle ◽  
Invasive Procedure ◽  
Colloid Cyst ◽  
Complete Resection ◽  
Safe Alternative ◽  
Foramen Of Monro ◽  
The Third ◽  
Postoperative Mri ◽  
Tela Choroidea ◽  
Colloid Cysts

Colloid cysts are histologically benign lesions whose primary goal of treatment should be complete resection to avoid recurrence and sudden death. Open surgery is traditionally considered the standard approach, but, recently, the endoscopic technique has been recognized as a viable and safe alternative to microsurgery. The endoscopic approach to colloid cysts of the third ventricle is usually performed through the foramen of Monro. However, this route does not provide adequate visualization of the cyst attachment on the tela choroidea. The combined endoscopic transforaminal-transchoroidal approach (ETTA), providing exposure of the entire cyst and a better visualization of the tela choroidea, could increase the chances of achieving a complete cyst resection. Between April 2005 and February 2011, 19 patients with symptomatic colloid cyst of the third ventricle underwent an endoscopic transfrontal-transforaminal approach. Five of these patients, harboring a cyst firmly adherent to the tela choroidea or attached to the middle/posterior roof of the third ventricle, required a combined ETTA. Postoperative MRI documented a gross-total resection in all 5 cases. There were no major complications and only 1 patient experienced a transient worsening of the memory deficit. To date, no cyst recurrence has been observed. An ETTA is a minimally invasive procedure that can allow for a safe and complete resection of third ventricle colloid cysts, even in cases in which the lesions are firmly attached to the tela choroidea or located in the middle/posterior roof of the third ventricle.

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