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Table of Contents
January-March 2013
Volume 8 | Issue 1
Page Nos. 1-56
Online since Monday, April 8, 2013
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EDITORIAL
Education in neurosurgery in the internet era
p. 1
Atos A de Sousa
DOI
:10.4103/1793-5482.110267
PMID
:23741255
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EDITORS CHOICE
Improving on-time start for iMRI neurosurgeries
p. 2
Natascha Fherzinah Rustom Ghadiali, Darren Koh, Kuok Wei Chia, Shin Yi Quek
DOI
:10.4103/1793-5482.110270
PMID
:23741256
Background:
In the Singapore General Hospital, intraoperative MRI (iMRI) neurosurgery is a multi-disciplinary process that involves staff from multiple departments. However, a baseline analysis showed that only 10.5% of iMRI neurosurgeries start on time, resulting in unnecessary waste of resources. The project aimed to improve the percentage of on-time start iMRI neurosurgeries to 100% within nine months.
Materials and Methods:
Clinical Practice Improvement methodology was used. The project involves four phases: Diagnostic, in which a baseline analysis is conducted; Intervention, in which problem areas are identified; Implementation, in which potential solutions are implemented; and sustaining, in which strategies to sustain gains are discussed.
Results:
The percentage of on-time start cases gradually increased to 100% in eight months, and was sustained above 85% in the following five months.
Conclusion:
This project serves as a successful demonstration of how quality improvement can be effected in a complex, multidisciplinary workflow, which is the norm for many hospital procedures.
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ORIGINAL ARTICLES
Protective effect on normal brain tissue during a combinational therapy of 2-deoxy-d-glucose and hypofractionated irradiation in malignant gliomas
p. 9
Neelam K Venkataramanaa, PK Venkatesh, BS Dwarakanath, S Vani
DOI
:10.4103/1793-5482.110274
PMID
:23741257
Purpose:
To investigate the effect of 2-deoxy-D-glucose (2-DG), an inhibitor of glucose transport and glycolysis, on glioblastoma and the normal brain tissue during combined treatment with hypofractionated radiotherapy.
Materials and Methods:
Twenty patients with malignant gliomas (18 Glioblastoma Multiformae, 2 Anasplastic Astrocytoma grade III) following surgery were treated weekly (once) with 2-DG, (250 mg/kg body weight), followed by 5 Gy of radiation to the tumor bed per fraction for 7 weeks. Clinical evaluation, complete hemogram, and random blood sugar levels were carried out in each cycle. Follow-up computed tomography (CT)/magnetic resonance imaging (MRI) was done to evaluate radiation-induced changes. Kernofsky Performance scale (KPS) was recorded preoperatively; postoperatively, and post-therapy till the last follow-up.
Results:
Twenty patients were recruited for this trail; 19 of them completed the treatment and 1 discontinued. The survival period ranged between 6 and 36 months after the treatment, with a median survival of 14 months. CT and MRI revealed significant tumor necrosis. Histological evidence from the tissue during reexploration confirms the hypothesis of protective effect of 2-DG on normal brain. KPS was above 80% in majority of the patients, 6 months after the surgery.
Conclusion:
Radiotherapy coupled with 2-DG enhances tumor necrosis selectively and significantly while the normal brain gets relatively protected. This has been reflected in our study both clinically by preservation of quality-of-life and pathologically by retaining the integrity of normal brain architecture.
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Decompressive craniectomy with multi-dural stabs - A combined (SKIMS) technique to evacuate acute subdural hematoma with underlying severe traumatic brain edema
p. 15
Abdul Rashid Bhat, Altaf Rehman Kirmani, Mohammed Afzal Wani
DOI
:10.4103/1793-5482.110275
PMID
:23741258
Context:
The decompressive craniotomy alone or with dural flap opening to evacuate acute subdural hematoma with underlying brain edema in severe traumatic brain injury has proved either insufficient in the first place or has fatal complications secondly.
Aims:
To reduce the fatality of conventional procedures and to evacuate acute subdural hematoma with severe brain edema by a combination of decompressive craniotomy and multi-dural stabs (SKIMS-Technique) without brain pouting and lacerations in low Glasgow coma scale (GCS) score patients.
Settings and Design:
The prospective study was conducted in the Department of Neurosurgery, from June, 2006 to June 2011, under a uniform protocol.
Materials and Methods:
A total of 225 patients of severe brain trauma were admitted to the accident and emergency unit of Neurosurgery and after initial resuscitation a CT brain was performed. All patients had a GCS score of 8 and below. All patients were ventilated postoperatively and ICP was monitored.
Statistical Analysis Used:
The data was analyzed and evaluated by the statistical methods like student's
T
-test. The analysis of Variance was used where-ever applicable.
Results:
The survival of multi-dural stab group was 77.31% (92/119) with good recovery in 42.02% (50/119) and a mortality of 22.69% (27/119) as compared with 46.23% (49/106) survival in open dural flap (control) group with 15.09% (16/106) good recovery and mortality of 53.77% (57/106).
Conclusions:
This new approach, known as SKIMS-Technique or Combined Technique i.e., "decompressive craniectomy with multi-dural stabs", proved much effective in increasing survival of low GCS and severe traumatic brain edema patients with acute subdural hematoma.
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Intracranial epidermoid tumor; microneurosurgical management: An experience of 23 cases
p. 21
Forhad Hossain Chowdhury, Mohammod Raziul Haque, Mainul Haque Sarker
DOI
:10.4103/1793-5482.110276
PMID
:23741259
Objectives:
An intracranial epidermoid tumor is relatively a rare tumor, accounting for approximately 0.1% of all intracranial space occupying lesions. These are also known as pearly tumor due to their pearl like appearance. In this series, the localization of the tumor, presenting age and symptoms, imaging criteria for diagnosis, surgical management strategy with completeness of excision and overall outcome were studied prospectively. Here, we report our short experience of intracranial epidermoid as a whole.
Materials and Methods:
Between January 2006 to December 2010, 23 cases of intracranial epidermoid were diagnosed preoperatively with almost certainty by computed tomography (CT) and magnetic resonance imaging (MRI) of brain in plain, contrast and other relevant studies. All of them underwent operation in Dhaka Medical College Hospital and in some Private Hospital in Dhaka, Bangladesh. All patients were followed-up routinely by clinical examination and neuroimaging. Average follow-up was 39 (range-71-11months) months. Patients of the series were prospectively studied.
Results:
Supratentorial epidermoids were 04 cases and infratemporal epidermoids were 19 cases. Clinical features and surgical strategy varies according to the location and extension of the tumors. Age range was 19-71 years (37.46 years). Common clinical features were headache, cerebellar features, seizure, vertigo, hearing impairment and features of raised intracranial pressure (ICP). Investigation was CT scan or/+ MRI of brain in all cases. Pre-operative complete excision was 20 cases, but post-operative images showed complete excision in 17 cases. Content of tumor was pearly white/white material in all cases except one, where content was putty material. Re-operation for residual/recurrent tumor was nil. Complications included pre-operative mortality one case, persisted sixth nerve palsy in one case, transient memory disturbance one case, and extra dural hematoma one case. One senior patient expired three months after the operation from spontaneous intracerebral hemorrhage. Rest of the patients were stable and symptom/s free till last follow-up.
Conclusion:
In the management of such tumors, one should keep in mind that an aggressive radical surgery carrying a high morbidity and mortality and a conservative subtotal tumor excision is associated with a higher rate of recurrence, but earlier diagnosis and complete excision or near total excision of this benign tumor can cure the patient with the expectation of normal life.
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Choroid plexus tumors: A clinico-pathological and neuro-radiological study of 23 cases
p. 29
Sushila Jaiswal, Mukul Vij, Anant Mehrotra, Brijesh Kumar, Anup Nair, Awadhesh Kumar Jaiswal, Sanjay Behari, Vijendra Kumar Jain
DOI
:10.4103/1793-5482.110277
PMID
:23741260
Background:
Choroid plexus tumors are intraventricular tumors derived from choroid plexus epithelium.
Aim:
To study the choroid plexus tumors with reference to their clinical, radiological, and pathological features.
Materials and Methods:
The study was performed by the retrospectively reviewing the clinical, radiological, and pathological records of patients of choroid plexus tumors.
Results:
A total of 23 cases (11 males, 13 females) of choroid plexus tumor were diagnosed from 1997 to 2009. Fourteen patients were below 15 years of age. Raised intracranial pressure was the main presenting feature in all the cases. Tumor was located in lateral ventricle (
n
= 14; in 3 cases tumor was going into third ventricle), fourth ventricle (
n
= 7), and cerebellopontine angle (
n
= 2). Total tumor excision was achieved in 21 cases. The histopathology was suggestive of choroid plexus papilloma (
n
= 19), atypical choroid plexus papilloma (
n
= 1), and choroid plexus carcinoma (
n
= 2). Clears cell areas were noted in three cases. Other histopathological features observed were foci of calcification (
n
= 5), Psammoma bodies (
n
= 2), hemorrhage (
n
= 5), hyalinization (
n
= 2), and oncocytic changes (
n
= 1).
Conclusions:
Choroid plexus tumors are intraventricular tumors arising from choroid plexus epithelium. The predominant clinical presentation is raised intracranial pressure. Surgery is the mainstay of treatment; histopathologically, they include choroid plexus papilloma, atypical choroid plexus papilloma, and choroid plexus carcinoma.
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CASES ILLUSTRATION WITH REVIEW
Post-craniotomy blindness in the supine position: Unlikely or ignored?
p. 36
Payman Vahedi, Ali Meshkini, Zahra Mohajernezhadfard, R Shane Tubbs
DOI
:10.4103/1793-5482.110278
PMID
:23741261
Immediate visual loss following craniotomy in the supine position is a disastrous complication in neurosurgical patients. The incidence is unknown and little is known on the definite pathogenesis. Also, preventive or restorative interventions are unclear. We describe the rare case of post-craniotomy optic neuropathy and sudden visual loss after craniotomy in the supine position for an olfactory groove meningioma, discuss the possible pathophysiology and review the literature on the pathogenesis, risk factors, and outcome. Although rare, neurosurgeons, as well as neuroanesthesiologists should be aware of the possibility of this devastating complication in the high-risk group of patients.
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Intracranial metastasis from primary spinal primitive neuroectodermal tumor
p. 42
Rajesh Kumar Ghanta, Kalyan Koti, Venkata Sateesh K Ghanta, Ramesh Teegala
DOI
:10.4103/1793-5482.110279
PMID
:23741262
Primary spinal primitive neuroectodermal tumors (PNET) are rare tumors, with only 94 cases reported till date. Metastasis to brain from a spinal PNET is even rarer. In the present report, we evaluate the pathology and treatment of solitary intracranial metastasis from spinal PNET in a 22-year-old female who presented with headache and left hemiparesis and was diagnosed to have right parietal parasagittal tumor. She has been previously diagnosed to have cervicothoracic primary spinal PNET, and was treated by surgery, radiotherapy, and chemotherapy seven years back. The intracranial tumor has been removed and pathological examination confirmed as PNET. She received radiotherapy and chemotherapy with ifosfamide and etoposide, following surgery for the right parietal PNET. At 20 months follow-up, patient is stable and has no recurrence of the disease. Critical review of reported cases of primary spinal PNET metastsising to brain was done.
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CASE REPORTS
Intracerebral hemorrhage cause by a ruptured oncotic aneurysm from choriocarcinoma metastasis
p. 48
Watcharasaksilp Wanarak, Suwansirikul Songkiet
DOI
:10.4103/1793-5482.110280
PMID
:23741263
Ruptured oncotic aneurysms from choriocarcioma metastasis are very rare. One rare case of metastatic cerebral choriocarcioma with an initial presentation of intracerebral hemorrhage is reported. A 25-year-old woman initially presented with sudden onset of alteration of consciousness. The computed tomography scan showed left parietal hematoma and CT angiography showed a small aneurysm of the left middle cerebral arteries territories. Her chest X-ray showed two lung masses. A craniectomy was performed to remove the hematoma and decompression following the aneurysm excision. After surgery the patient regained consciousness and had no neurological deficit. The pathology reported metastatic choriocarcioma and her beta - HCG was 73,656 units. After recovery she received chemotherapy with an etoposide, methotrexate, actinomycin D, cyclophosphamide, and vincristine/oncovine (EMA-CO) regimen.
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Neglected primary Ewing's sarcoma of ethmoid presenting as surgical emergency
p. 51
Dinesh Shukla, Vinjamuri Srinivas Rao, Alugolu Rajesh, Aniruddh Kumar Purohit
PMID
:23741264
We present a male child with primary Ewing's sarcoma arising from ethmoid sinuses with intradural and extracranial extension (bilateral nasal cavities, orbits, and maxillary sinuses). This is a rare condition. He presented with recurrent episodes of epistaxis for 2 years, sudden onset rapidly progressive bilateral proptosis, with painful restriction of extraocular movements, and decreased visual acuity for 4 days. Sudden complete loss of vision following admission demanded emergency tumor decompression.
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Migration of intraventricular neurocysticercus after ventriculostomy
p. 54
Vamshi Krishna Kotha
DOI
:10.4103/1793-5482.110282
PMID
:23741265
Intraventricular neurocysticerci are an uncommon occurrence and are often difficult to diagnose. They are often a cause of obstructive hydrocephalus and inflammatory reactions, which can be life threatening. Intraventricular neurocysticerci are most common in the fourth ventricle and surgical decompression of obstructive hydrocephalus is an important step in their management. However, these cysticerci are also known to migrate within the ventricular system and may cause confusion during surgery. It thus becomes very important for radiologists and neurosurgeons to be aware of this phenomenon.
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Online since 01 May, 2011