British Journal of Neurosurgery

Article	Citations
The prognosis of glioblastoma: a large, multifactorial study	45
Cognitive deficits among patients surviving aneurysmal subarachnoid hemorrhage. A contemporary systematic review	24
Largest neurosurgical social media group and its impact on communication and research	23
What to know about schwannomatosis: a literature review	20
Double lesion MRgFUS treatment of essential tremor targeting the thalamus and posterior sub-thalamic area: preliminary study with two year follow-up	20
Cerium oxide nanoparticles as a new neuroprotective agent to promote functional recovery in a rat model of sciatic nerve crush injury	19
Determinants of quality of life in degenerative cervical myelopathy: a systematic review	18
Review and analysis of modern lumbar spinal fusion techniques	17
Reconstruction strategies for intraoperative CSF leak in endoscopic endonasal skull base surgery: systematic review and meta-analysis	17
The use of augmented reality in transsphenoidal surgery: A systematic review	17
Choroid plexus and CSF: an updated review	16
Cranial neurosurgical robotics	16
A systematic review of the efficacy of surgical intervention in the management of symptomatic Tarlov cysts: a meta-analysis	16
From textbook to patient: a practical guide to train the end-to-side microvascular anastomosis	15
Percutaneous endoscopic posterior lumbar interbody fusion for the treatment of degenerative lumbar diseases: a technical note and summary of the initial clinical outcomes	12
Understanding the motivations, needs, and challenges faced by aspiring neurosurgeons in Africa: an E-survey	12
Post-traumatic hydrocephalus – incidence, risk factors, treatment, and clinical outcome	12
Ki-67 labeling index and Knosp classification of pituitary adenomas	12
Tranexamic acid for chronic subdural hematoma	11
Association between facet joint orientation/tropism and lumbar intervertebral disc degeneration	11
Estimation of bone mineral density with hounsfield unit measurement	11
Challenges and opportunities in the care of chronic subdural haematoma: perspectives from a multi-disciplinary working group on the need for change	11
Glioblastoma: assessment of the readability and reliability of online information	10
Motivations, barriers, and social media: a qualitative study of uptake of women into neurosurgery	9
Spinal cord stimulation in the treatment of peripheral vascular disease: a systematic review – revival of a promising therapeutic option?	9

Effect of untethering on occult tethered cord syndrome: a systematic review	9
Neurosurgical trauma from E-Scooter usage: a review of early case series in London and a review of the literature	9
Surgical management of cerebellopontine angle epidermoid cysts: an institutional experience of 10 years	9
Evaluation of the effect of bilateral subthalamic nucleus deep brain stimulation on fatigue in Parkinson’s Disease as measured by the non-motor symptoms scale	8
Effect of deep brain stimulation on freezing of gait in patients with Parkinson’s disease: a systematic review	8
Contralateral C7 nerve transfer via the prespinal route in treatment of spastic paralysis of upper limb after cerebral palsy	8
Ability of S100B to predict post-concussion syndrome in paediatric patients who present to the emergency department with mild traumatic brain injury	8
Biomarkers for differentiating grade II meningiomas from grade I: a systematic review	8
A proposed novel traumatic brain injury classification system – an overview and inter-rater reliability validation on behalf of the Society of British Neurological Surgeons	8
Different approaches to percutaneous endoscopic lumbar discectomy for L5/S1 lumbar disc herniation: a retrospective study	8
Observations on the anti-glioma potential of electrical fields: is there a role for surgical neuromodulation?	8
Vesselplasty for the treatment of osteoporotic vertebral compression fractures with peripheral wall damage: a retrospective study	7
A retrospective analysis of emergency referrals and admissions to a regional neurosurgical centre 2016–2018	7
Stereotactic radiosurgery with immune checkpoint inhibitors for brain metastases: a meta-analysis study	7
Combined contralateral C7 to C7 and L5 to S1 cross nerve transfer for treating limb hemiplegia after stroke	7
Aggressive pituitary adenoma in the context of Lynch syndrome: a case report and literature review on this rare coincidence	7
Cranioplasty with hydroxyapatite or acrylic is associated with a reduced risk of all-cause and infection-associated explantation	7
Fluorescein sodium fluorescence: role in stereotactic brain biopsy	7
Atypical teratoid/rhabdoid tumor in adult: case series and an integrated survival analysis	7
Primary intraspinal benign tumors treated surgically: an analysis from China	7
Optical coherence tomography confirms shunt malfunction and recurrence of raised intracranial pressure in optic atrophy	7
Complications associated with deep brain stimulation for Parkinson’s disease: a MAUDE study	7
Preoperative MRI characteristics predict chronic subdural haematoma postoperative recurrence: a meta-analysis	6
Multiple and mirror intracranial aneurysms: study of prevalence and associated risk factors	6
Hard collar immobilisation following elective surgery on the cervical spine: a cross-sectional survey of UK spinal surgeons	6
Hemoglobin levels as a transfusion criterion in moderate to severe traumatic brain injury: a systematic review and meta-analysis	6
Fusion rates for conservative and surgical management of type II odontoid fractures and its impact	6
The reliability and quality of online patient education videos for vestibular schwannoma	6
The promotive effect of activation of the Akt/mTOR/p70S6K signaling pathway in oligodendrocytes on nerve myelin regeneration in rats with spinal cord injury	6
A survey of teaching undergraduate neuroanatomy in the United Kingdom and Ireland	6
Intracranial solitary fibrous tumor/hemangiopericytomas: a clinical analysis of a series of 17 patients	6
Resection of the piriform cortex for temporal lobe epilepsy: a Novel approach on imaging segmentation and surgical application	6
Usefulness of intraoperative monitoring in microvascular decompression for hemifacial spasm: a systematic review and meta-analysis	6
Bibliometric analysis of the top 100 cited articles on stereotactic radiosurgery of intracranial meningiomas	6
Tremor as a symptom of degenerative cervical myelopathy: a systematic review	6
A review of the hemivertebrae and hemivertebra resection	6
Establishing mild, moderate and severe criteria for the myelopathy disability index in cervical spondylotic myelopathy	6
Towards improved outcome in children treated surgically for spontaneous intracranial suppuration in South Wales	6
Release, reduction, and fixation of one-stage posterior approach for basilar invagination with irreducible atlantoaxial dislocation	5
Comparison of direct MRI guided versus atlas-based targeting for subthalamic nucleus and globus pallidus deep brain stimulation	5
Gentamycin irrigation significantly reduces 28-day surgical site infection after emergency neurosurgery	5
Extreme cases in percutaneous transforaminal endoscopic surgery: case series and brief review of the literature	5
Internal neurolysis: ‘nerve combing’ for trigeminal neuralgia without neurovascular conflict – early UK outcomes	5
Gross total resection with fluorescence could lead to improved overall survival rates: a systematic review and meta-analysis	5
Surgical outcomes and prognostic factors of parasagittal meningioma: a single-center experience 165 consecutive cases	5
An eye on the future for defeating hydrocephalus, ciliary dyskinesia-related hydrocephalus: review article	5
Comparison the effect of bupivacaine plus magnesium sulfate with ropivacaine plus magnesium sulfate infiltration on postoperative pain in patients undergoing lumbar laminectomy with general anesthesia	5
Management of the skull base invasion in spheno-orbital meningiomas	5
Technical aspects and operative nuances using a high-definition 4K-3-dimensional exoscope for carotid endarterectomy surgery	5
Risk factors and morbidity associated with surgical site infection subtypes following adult neurosurgical procedures	5

Neurosurgical applications of tractography in the UK	5
Ruptured intra-cranial arachnoid cysts: a case series from a single UK institution	5
Intravertebral insertion of interbody fusion cage via transpedicular approach for the treatment of stage III Kümmell disease: a technical note and case presentation	5
Exoscope aided trans-sulcal minimally invasive parafascicular resection of a paediatric brainstem pilocytic astrocytoma using a tubular retractor system	5
Comparative effectiveness of paravertebral Ozone injection and caudal epidural steroid-hyaluronidase injection in lumbosacral spinal stenosis	5
Laser interstitial thermal therapy (LITT) for intracranial lesions: a single-institutional series, outcomes, and review of the literature	5
H3K27M-mutant glioma in thoracic spinal cord and conus medullaris with pilocytic astrocytoma morphology: case report and review of the literature	5
Relative survival after meningioma surgery. A French nationwide population-based cohort study	5
Culture-negative versus culture-positive in pyogenic spondylitis and analysis of risk factors for relapse	4
Subgaleal drains may be associated with decreased infection following autologous cranioplasty: a retrospective analysis	4
Repeat resection for recurrent glioblastoma in the temozolomide era: a real-world multi-centre study	4
A technique to facilitate the cannulation of the foramen ovale for balloon compression	4
Chordoid meningioma: report of 5 cases and review of the literature	4
Primary spinal cord glioblastoma multiforme: a single-center experience	4
Late complications of visual impairment and hydrocephalus after flow diverter-assisted coil embolisation for intracranial large aneurysm: a case report and literature review	4
Management of brain tumour related epilepsy (BTRE): a narrative review and therapy recommendations	4
Multimodal mapping and monitoring is beneficial during awake craniotomy for intra-cranial tumours: results of a dual centre retrospective study	4
Telemetric intracranial pressure monitoring: our experience with 22 patients investigated for intracranial hypertension	4
A practical guide to patient position and complication management in neurosurgery: a systematic qualitative review	4
Paediatric posterior fossa tumour resection rates in a small volume centre: the past decade’s experience	4
Adapting management strategies for sellar-suprasellar lesions during the COVID-19 pandemic: a pragmatic approach from the frontline	4
Meningioma systematic reviews and meta-analyses: an assessment of reporting and methodological quality	4
Embolization as adjunctive treatment to achieve complete cure of ruptured arachnoid cyst associated with chronic subdural hematoma	4
Use of tissue sealant patch (TachoSil) in the management of cerebrospinal fluid leaks after anterior cervical spine discectomy and fusion	4
Delayed hypersensitivity reaction to a dural repair substitute	4
Osteoradionecrosis and microvascular free flap failure managed with negative pressure wound therapy: A case report	4
The addition of chloroquine and bevacizumab to standard radiochemotherapy for recurrent glioblastoma multiforme	4
Patient and physician positioning during anterior skull base surgery impacts physician ergonomics	4
Factors associated with prognosis of dysembryoplastic neuroepithelial tumors patients after surgical resection: a retrospective observational study	4
Acute neurologic decline in a patient with spinal stenosis: blame it on the epidural fat	4
Intracranial malignant myopericytoma: case report and literature review	4
Foramen magnum decompression for Chiari malformation type I – UK surgical practice	4
Primary and secondary gliosarcoma: differences in treatment and outcome	4
ALK-negative CNS anaplastic large cell lymphoma: case report and review of literature	4
Optimising trajectory planning for stereotactic brain tumour biopsy using artificial intelligence: a systematic review of the literature	4
Investigation and management of serum sodium after subarachnoid haemorrhage (SaSH): a survey of practice in the United Kingdom and Republic of Ireland	4
Microsurgical endoportal MRI/US-navigated approach for the resection of large intraventricular tumours: a 20-consecutive patients case series	4
The value of texture analysis in peritumoral edema of differentiating diagnosis between glioblastoma and primary brain lymphoma	4
Sudden death associated with the use of suction drains – a report of 2 cases following uneventful cranioplasty and literature review. Is the use of suction drains safe?	4
Middle meningeal artery embolisation for chronic subdural haematomas: the first prospective UK study	4
Determining the association between the radiographic parameters and the SRS-22 scores in Chinese female patients with adolescent idiopathic scoliosis: does curve pattern matter?	4
Endoscopic resection of sellar and suprasellar epidermoid cyst: report of two cases and review of literature	4
Liminal spaces in neurosurgery – tensions between expectations of the patient and their surgeon at the threshold of informed consent	4
Relationship between the sodium fluorescein yellow fluorescence boundary and the actual boundary of high-grade gliomas during surgical resection	4
Preoperative meningioma embolization reduces perioperative blood loss: a multi-center retrospective matched case-control study	4
Racial and ethnic disparities in brain tumour survival by age group and tumour type	4
Endoscopic third ventriculostomy compared to ventriculoperitoneal shunt as treatment for idiopathic normal pressure hydrocephalus: a systematic review and meta-analysis	4
Volume reduction with surgery for ICH: when is it effective? Analysis of the CT scans from the STICH II trial	4
The role of socioeconomic status on outcomes following cerebellopontine angle tumor resection	4
Unsuccessful bypass and trapping of a giant dolichoectatic thrombotic basilar trunk aneurysm. What went wrong?	4
Primary optic nerve sheath schwannoma: a case report	4
Anterolateral thoracic approach for thoracic discectomy using pedicle marking and 3D intraoperative imaging system	3
Planning of gamma knife radiosurgery (GKR) for brain arteriovenous malformations using triple magnetic resonance angiography (triple-MRA)	3
Pharmacological venous thromboembolism prophylaxis in elective cranial surgery: a systematic review of time of initiation, regimen and duration	3
Unruptured untreated intracranial aneurysms: a retrospective analysis of outcomes of 445 aneurysms managed conservatively	3
Endoscopic diving technique for surgery of brain abscess	3
Functional MRI applications for intra-axial brain tumours: uses and nuances in surgical practise	3
Post-traumatic hydrocephalus: unknown knowns and known unknowns	3
Why are neurosurgeons sued? A single-center, half-decade review	3
Perioperative management of lithium in the patient undergoing pituitary surgery: a case report	3
A prospective observational study of electrocardiographic and echocardiographic changes in traumatic brain injury – effect of surgical decompression	3
Evaluation of the effects of personalized 3D-printed jig plate–assisted puncture in trigeminal balloon compression	3
The economic and psychological impact of cancellations of elective spinal surgeries in the COVID-19 era	3
Outcomes of ulnar nerve decompression for double crush syndrome	3
Improving recovery after microvascular decompression surgery for hemifacial spasm: experience from 530 cases with enhanced recovery after surgery (ERAS) protocol	3
Surgical decompressions for cauda equina syndrome during COVID-19	3
Compassion, communication, and the perception of control: a mixed methods study to investigate patients’ perspectives on clinical practices for alleviating distress and promoting empowerment during aw	3
Femoral intraneural ganglion cyst: the first confirmed case report	3
Impact of antithrombotic agents on outcomes in patients requiring surgery for chronic subdural haematoma: a systematic review and meta-analysis	3
Mortality and morbidity in surgically treated patients with petroclival meningiomas: a systematic review and meta-analysis of case series	3
CyberKnife for the management of Cushing’s disease: our institutional experience and review of literature	3
Hormonal and radiologic outcomes after gamma knife radiosurgery for nonfunctioning pituitary adenomas	3
Atypical meningioma: patterns of postradiotherapy recurrences	3
Intravenous milrinone for delayed cerebral ischaemia in aneurysmal subarachnoid haemorrhage: a systematic review	3
C2 semisegmented hemivertebra – a rare anomaly presenting with torticollis	3
Foramen magnum decompression in adults with Chiari type 1 malformation: use of intraoperative ultrasound to guide extent of surgery	3
Modic changes and its association with other MRI phenotypes in east Anatolian low back pain patients	3
Definitive radiotherapy for meningeal brainstem melanocytoma: a case report	3
Schwannomatosis of the sciatic nerve: a case report	3
The impact of coronavirus 2019 (COVID-19) on neurosurgical practice and training: a review article	3

Degenerative cervical myelopathy education in UK medical schools: a national cross-sectional survey of medical students	3
Medulla oblongata germinoma with Klinefelter syndrome	3
Parent artery occlusion for flow-related aneurysms at the proximal segment of the main feeding arteries of cerebellar arteriovenous malformations	3
Microvascular decompression using a fully transcranial neuroendoscopic approach	3
What does it take to become a neurosurgeon? A mixed methods cross-sectional analysis of professional identity formation amongst neurosurgical trainees	3
A novel surgical technique for treatment of symptomatic Tarlov cysts	3
Tumour treating fields in glioblastoma: is the treatment tolerable, effective, and practical in UK patients?	3
Concurrence of craniopharyngioma and meningioma: a case report and systematic review of the literature	3
Earlier cranioplasty following posttraumatic craniectomy is associated with better neurological outcomes at one-year follow-up: a two-centre retrospective cohort study	3
Chronic encapsulated intracerebral hematomas: a systematic review	3
An algorithmic clinicoradiological approach to paediatric cranial vault lesions: distinguishing normal variants from pathologies	3
Wireless phone use and adult meningioma risk: a systematic review and Meta-analysis	3
Clinical and cost-effectiveness of PCF versus ACD in the treatment of cervical brachialgia (FORVAD trial)	3
Cavernous sinus haemangioma masquerading as a pituitary macroadenoma: how the unexpected lurks in neurosurgery	3
Giant epidermoid cyst penetrating the skull: a case report and literature review	3
Primary pituitary abscess: case report and suggested management algorithm	3
Cervical decompressive laminectomy and lateral mass screw-rod arthrodesis: surgical experience and analytical review of 4120 consecutive screws	3
The relationship between pain and herniation radiology in giant lumbar disc herniation causing severe sciatica: 15 cases	3
Between Scylla and Charybdis: risks of early therapeutic anticoagulation for venous thromboembolism after acute intracranial hemorrhage	3
Transfer of the phrenic nerve to musculocutaneous nerve via sural nerve graft after total brachial plexus injury	3
Surgical aspiration versus excision for intraparenchymal abscess: a systematic review and Meta-analysis	3
Outcome of non-instrumented lumbar spinal surgery in obese patients: a systematic review	3
Electrically assisted pedal cycles: is new legislation required to mitigate increased head injury risk?	3
Does the discontinuation time of antiplatelet or anticoagulation treatment affect hemorrhagic complications in patients undergoing craniotomy for neurovascular lesions?	3
MIS removal of extraforaminal lumbar spine schwannoma using MAS–TLIF retractor: technical note	3
Endoscopic transsphenoidal surgery reconstruction using the fibrin sealant patch Tachosil ®	3
‘Every patient is like my child’: pediatric neurosurgeons’ relational and emotional bonds with their patients and families	3
Tethered cord secondary to focal nondisjunction of the primary neural tube: experience from a Singapore children’s hospital	3
Surgical resection versus stereotactic radiosurgery on local recurrence and survival for patients with a single brain metastasis: a systematic review and meta-analysis	2
Reconstruction of C1 lateral mass with an expandable cage in addition to vertebral artery preservation: presenting two cases	2
Experimental animal models for brain abscess: a systematic review	2
Bilateral aneurysms, one of which is embedded in a meningioma: a rare case report and literature review	2
Stereotactic radiosurgery for cerebellopontine meningiomas: a systematic review and meta-analysis	2
Neurotrauma, COVID and the rationing of intensive care: an ethical approach	2
Comparison of two techniques of goal directed fluid therapy in elective neurosurgical patients – a randomized controlled study	2
A career in neurosurgery: perceptions and the impact of a national SBNS/NANSIG neurosurgery careers day	2
Tubular minimally invasive resection of McCormick type II paraspinal schwannoma: preliminary experience	2
Initial UK series of endoscopic suturectomy with postoperative helmeting for craniosynostosis: early report of perioperative experience	2
Evaluation of the role of anal tone and perianal sensation examination in the assessment of suspected cauda equina syndrome	2
Successful multimodality management of extrarenal extracranial malignant rhabdoid tumour of the left sciatic nerve mimicking a neurofibroma	2
The impact of gender on long-term outcomes following supratentorial brain tumor resection	2
Asymptomatic chronic subdural haematoma - does it need neurosurgical intervention?	2
Can ChatGPT outperform a neurosurgical trainee? A prospective comparative study	2
The weekend effect in neurosurgery: the Leeds general infirmary experience	2
3 Tesla intra-operative MRI as an adjunct to endoscopic pituitary surgery: an early assessment of clinical utility	2
A lecture series – neurosurgery in an Irish Medical School without an associated neurosurgical Centre	2
“Extra-cranial proximal pica aneurysm – a rare and surreptious cause of posterior fossa sah: case report and review of literature”	2
A new comprehensive grading for giant pituitary adenomas: SLAP grading	2
The value of repeated lumbar puncture to test for xanthochromia, in patients with clinical suspicion of subarachnoid haemorrhage, with CT-negative and initial traumatic tap	2
Optimal time window for minimally invasive surgery in treating spontaneous intracerebral hemorrhage in the basal ganglia region: a multicenter and retrospective study	2
Spinal myelolipoma – an extremely rare pathology within the lumbar spine: a case report and literature review	2
The benefits of perioperative music interventions for patients undergoing neurosurgery: a mixed-methods systematic review	2
Anterolateral versus posterolateral decompression and spinal stabilization in thoracolumbar Potts spine: a comparative study	2
Idiopathic membranous occlusion of the foramen of Monro: an unusual cause of hydrocephalus and headache in adults	2
Intramedullary spinal cord metastasis from an adenoid cystic carcinoma of the external auditory canal: case report	2
Internal maxillary artery to middle cerebral artery bypass for a complex recurrent middle cerebral artery aneurysm: case report and technical considerations	2
Presentation and management of spinal meningioma and its association with breast carcinoma—case series and systematic review	2
Post-operative vision loss: analysis of 587 patients undergoing endoscopic surgery for pituitary macroadenoma	2
The malignant transformation of osteoid osteoma in the cervical spine to high-grade osteosarcoma: a case report and review of literature	2
A pragmatic single centre retrospective comparative review of complication profile between PEEK cages and Zero-P cage screw constructs	2
Epidural empyema following nBCA embolization of the middle meningeal artery for the treatment of a chronic subdural hematoma	2
Radiotherapy-induced glioblastoma: distinct differences in overall survival, tumor location, pMGMT methylation and primary tumor epidemiology in Hong Kong chinese patients	2
Bypassing the nearest emergency department for a more distant neurosurgical centre in traumatic brain injury patients	2
Cervical sagittal balance: a predictor of neck pain after anterior cervical spine surgery?	2
A single-center experience of transsphenoidal endoscopic surgery for acromegaly in 73 patients: results and predictive factors for remission	2
Indocyanine green illuminates the way to cut the tentorium in occipital transtentorial approach: technical note	2
A single-centre study of frame-based stereotactic brain biopsies	2
Vagus nerve stimulation in ischaemic stroke: further possibilities	2
Halo vest immobilization – an institutional review of safety in acute cervical spine injury from 2013 to 2017	2
Growth hormone-releasing pituitary microadenoma overshaded by a macroadenoma: a case of double pituitary adenomas and review of the literature	2
Prognostication of the neurological outcome of tethered cord based on intraoperative neuromonitoring findings: how close can we get?	2
Tremor assessment scales before, during and after MRgFUS for essential tremor – results, recommendations and implications	2
Comparison between zero-profile and cage plate devices in the treatment of single-level cervical spondylopathy	2
Very small vestibular schwannoma as the source of fatal subarachnoid hemorrhage: a case report	2
Obstructive hydrocephalus due to an enlarged massa intermedia treated with endoscopic third ventriculostomy	2
Promoting padawans: a survey examining the state of mentorship in neurosurgical training in the United Kingdom	2
The upside-down anatomy: perspectives from cranial neurosurgery	2
Traumatic brachial plexus injury: proposal of an evaluation functional prognostic scoring system	2
Risk factors and outcome analysis of patients with intraoperative rupture (IOR) of ruptured cerebral aneurysm during microsurgical clipping	2
Transpalpebral transorbital neuroendoscopic (TONES) repair of orbital meningoencephalocele: a technical note	2
Quality of life outcomes after transnasal endoscopic pituitary surgery using the Glasgow Benefit Inventory	2
Multi-joint Charcot arthropathy caused by cervical spondylotic myelopathy and adult degenerative scoliosis with syringomyelia: a case report	2
Eagle syndrome: a rare pathology presented in a 3-Dimensional reconstructed view	2
Robotic-assisted stereotactic drainage of cerebral abscess and placement of ventriculostomy	2
The effect of anti-thrombotics on the postoperative bleeding rate in patients undergoing craniotomy for brain tumor	2
Cerebral syphilitic Gumma in the modern era: a report of an unusual case and brief review of recent published reports	2
SARS coronavirus 2 and central nervous system manifestations: causation, relation, or coexistence? a case series study and literature review	2
A survey of the radiological follow-up of unruptured intracranial aneurysms in the United Kingdom	2
Outcome after treatment of pediatric supratentorial ependymoma: long-term follow-up of a single consecutive institutional series of 26 patients	2
Intraspinal canal platform system for coil embolization of anterior spinal artery aneurysm associated with spinal cord arteriovenous malformation: a case report and literature review	2
Is endoscopic resection a useful technique for a cavernous sinus sellar cavernoma? A case report and literature review	2
Endovascular management of V3 segment vertebro-vertebral fistula: case management and literature review	2
Trial of dexamethasone for chronic subdural hematoma	2
Giant aneurysms of the distal posterior inferior cerebellar artery – systematic review	2
Cervical corpectomy in delayed presentation of irreducible cervical dislocation: experience with eight cases	2