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  • Author or Editor: Chandrasekaran Kaliaperumal x
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Fajer Almesbah, Tafadzwa Mandiwanza, Chandrasekaran Kaliaperumal, John Caird and Darach Crimmins


The frequency with which routine preoperative blood test results predict perioperative or postoperative complications is insignificant. The unnecessary ordering of routine tests increases the financial costs and patients' distress. The authors evaluated the effects of routine preoperative testing on patient management and the overall financial costs.


The authors retrospectively reviewed the medical records and laboratory data for 355 children admitted to the neurosurgical department for elective procedures over a 5-year period (January 2008–December 2012). They excluded all patients admitted for imaging or surgical procedures requiring local anesthesia, and they recorded the results of preoperative and previous (up to 6 months before surgery) blood tests and any abnormalities noted.


As a result of the 3489 blood tests ordered preoperatively for 328 (94.6%) of the 355 patients, 29 abnormalities (9%) were detected. Most of these abnormal values were near the reference range, and none significantly affected the progression of scheduled procedures. For only 1 patient (0.28%) was the procedure cancelled because of an abnormality (preoperative partial thromboplastin time), which further testing showed to be a false-positive result. The cost of these tests over 5 years was 5205–10,410 euros ($6766–$13,533 US).


Preoperative tests should be selectively requested on the basis of clinical indication.

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Jahangir Sajjad, Chandrasekaran Kaliaperumal, Niamh Bermingham, Charles Marks and Catherine Keohane

This 40-year-old man presented with a 5-month history of progressive right-sided headache associated with visual blurring. He also had a history of epilepsy but had been seizure free with medication for the past 10 years. An initial CT scan of his brain performed 16 years previously had revealed a small area of calcification in the right parietal region. In the current presentation, he had a left-sided homonymous hemianopia but no other neurological deficits. A CT scan of his brain showed a much larger calcified, partly cystic lesion in the right parietal region. Because he was symptomatic, the lesion was excised and the cyst was drained. Histological examination of the excised tissue showed an unusual primary tumor that was difficult to classify but had some features of angiocentric glioma. The heavy calcification, mixed-density cell population, and regions with features of angiocentric glioma were most unusual. The patient remained asymptomatic 5 years after surgery, and follow-up scans did not show recurrence.

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John A. Emelifeonwu, Drahoslav Sokol, Pasquale Gallo, Jothy Kandasamy and Chandrasekaran Kaliaperumal

The authors report a case of a child with hypothalamic-origin pilocytic astrocytoma and hydrocephalus, which was refractory to treatment with a ventriculoperitoneal shunt due to high CSF protein content. With parental education, the child's hydrocephalus was managed long-term in the community with a long-tunnelled external ventricular drain, which was maintained by his parents. To the authors' knowledge this is the first report of this management option as a long-term measure. No harm has come to the patient. The authors propose long-term, long-tunnelled external ventricular drain as a viable treatment option for such patients.

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Ingrid Kieran, Zaitun Zakaria, Chandrasekaran Kaliaperumal, Declan O'Rourke, Alan O'Hare, Eoghan Laffan, John Caird, Mary D. King and Dylan J. Murray

The authors describe the case of a 3-year-old boy with a giant congenital vertex hemangioma who underwent presurgical embolization with Onyx (ethylene-vinyl alcohol copolymer dissolved in dimethyl sulfoxide) and Glubran (N-butyl-2-cyanoacrylate). This vascular tumor had no intracranial vascular communication as assessed by pre-embolization MRI and catheter angiography. All embolizations were performed by direct percutaneous injection. One week following the last embolization procedure the child presented with a 24-hour history of ataxia and extrapyramidal tremor. He was diagnosed with a possible immune-mediated reaction to Onyx or Glubran, which was treated with an urgent surgical excision of the hemangioma followed by intravenous administration of immunoglobulin and steroids. To the authors' knowledge, this is the first case of possible immune-mediated toxicity secondary to either Onyx or Glubran administration. This case highlights the need for awareness of potential toxic reactions to these embolic agents in the treatment of hemangiomas in the pediatric patient.

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Zaitun Zakaria, Chandrasekaran Kaliaperumal, Darach Crimmins and John Caird


The aim of this study was to assess the outcome of neurosurgical treatment in children with bleeding diathesis and also to evaluate the current management plan applied in the authors’ service.


The authors retrospectively analyzed all cases in which neurosurgical procedures were performed in pediatric patients presenting with intracranial hematoma due to an underlying bleeding tendency over a 5-year period at their institution. They evaluated the patients’ neurological symptoms from the initial referral, hematological abnormalities, surgical treatment, neurological outcome, and scores on the Pediatric Glasgow Outcome Scale–Extended (GOS-E Peds) obtained 1 year after the last operation.


Five patients with a bleeding diathesis who underwent surgery for intracranial hematoma were identified; the diagnosis was hemophilia A in 3 cases, idiopathic thrombocytopenic purpura in 1 case, and severe aplastic anemia in 1 case. Intracerebral hematoma (ICH) (n = 4) and acute subdural hematoma (n = 1) were confirmed on radiological investigations. In 2 of the 4 patients with ICH, the diagnosis of bleeding diathesis was made for the first time on presentation. Four patients (all male) were younger than 2 years; the patient with severe aplastic anemia and spontaneous ICH was 15 years old and female. The duration of symptoms varied from 24 hours to 5 days. Neurological examination at 1 year’s follow-up showed complete recovery (GOS-E Peds score of 1) in 3 cases and mild weakness (GOS-E Peds score of 2) in 2 cases.


Neurosurgical management of patients with bleeding diathesis should be carried out in a tertiary-care setting with multidisciplinary team management, including members with expertise in neuroimaging and hematology, in addition to neurosurgery. Early diagnosis and prompt treatment of a bleeding diathesis is crucial for full neurological recovery.

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Gianluca Agresta, Drahoslav Sokol, Chandrasekaran Kaliaperumal, Jothy Kandasamy and Pasquale Gallo

Neurenteric cysts (NCs) are rare congenital lesions with epithelial mucin-secreting walls. They can occur anywhere along the neural axis, and an intrinsic midbrain cyst is extraordinary. Surgical management may pose a challenge due to the location of the lesion and adhesion of the cyst wall to the surrounding brainstem. The authors describe the first case of pediatric NC that was treated successfully with intracystic interferon-α (IFN-α).

A 16-month-old baby girl presented with a 2-week history of progressive croup, vomiting, and swallowing difficulty. MRI revealed a 1.8-cm cystic intrinsic lesion in the pontomedullary region. She initially underwent posterior fossa craniotomy and drainage of the cyst under intraoperative neurophysiology monitoring. Three weeks following the procedure, her symptoms recurred, and follow-up MRI demonstrated cystic recurrence. She underwent repeat aspiration of the cyst and biopsy of the cyst wall, and INF-α-2b was injected into the cystic cavity. Her symptoms improved and completely resolved after 5 months. A 9-month follow-up brain MRI study showed complete resolution of the NC. Intracystic IFN-α injection after cystic content aspiration may be a safe treatment option for the management of intrinsic brainstem NCs. Long-term clinical and radiological follow-up is recommended.