Comprehensive assessment of hemorrhage risks and outcomes after stereotactic brain biopsy. J Neurosurg
University of Pittsburgh, Pittsburgh, Pennsylvania, United States Journal of Neurosurgery
(Impact Factor: 3.74).
05/2001; 94(4):545-51. DOI: 10.3171/jns.2001.94.4.0545
Stereotactic brain biopsy has played an integral role in the diagnosis and management of brain lesions. At most centers, imaging studies following biopsy are rarely performed. The authors prospectively determined the acute hemorrhage rate after stereotactic biopsy by performing immediate postbiopsy intraoperative computerized tomography (CT) scanning. They then analyzed factors that may influence the risk of hemorrhage and the diagnostic accuracy rate.
Five hundred consecutive patients undergoing stereotactic brain biopsy underwent immediate postbiopsy intraoperative CT scanning. Before surgery, routine preoperative coagulation studies were performed in all patients. All medical charts, laboratory results, preoperative imaging studies, and postoperative imaging studies were reviewed. In 40 patients (8%) hemorrhage was detected using immediate postbiopsy intraoperative CT scanning. Neurological deficits developed in six patients (1.2%) and one patient (0.2%) died. Symptomatic delayed neurological deficits developed in two patients (0.4%), despite the fact that the initial postbiopsy CT scans in these cases did not show acute hemorrhage. Both patients had large intracerebral hemorrhages that were confirmed at the time of repeated imaging. The results of a multivariate logistic regression analysis of the risk of postbiopsy hemorrhage of any size showed a significant correlation only with the degree to which the platelet count was below 150,000/mm3 (p = 0.006). The results of a multivariate analysis of a hemorrhage measuring greater than 5 mm in diameter also showed a correlation between the risk of hemorrhage and a lesion location in the pineal region (p = 0.0086). The rate at which a nondiagnostic biopsy specimen was obtained increased as the number of biopsy samples increased (p = 0.0073) and in accordance with younger patient age (p = 0.026).
Stereotactic brain biopsy was associated with a low likelihood of postbiopsy hemorrhage. The risk of hemorrhage increased steadily as the platelet count fell below 150,000/mm3. The authors found a small but definable risk of delayed hemorrhage, despite unremarkable findings on an immediate postbiopsy head CT scan. This risk justifies an overnight hospital observation stay for all patients after having undergone stereotactic brain biopsy.
Available from: Michael L James
- "The cranium is a closed compartment where small volumes of blood can cause clinical, even life-threatening, symptoms. Previous studies show that 1–2% of post-craniotomy patients have symptomatic hemorrhage requiring intervention (Treib et al. 1999; Field et al. 2001). We aimed to determine whether intraoperative HES administration , compared with no HES, was associated with post-craniotomy hemorrhage requiring reoperation in a large retrospective cohort. "
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ABSTRACT: Intraoperative intravascular volume expansion with hydroxyethyl starch-based colloids is thought to be associated with an increased risk of post-craniotomy hemorrhage. Evidence for this association is limited. Associations between resuscitation with hydroxyethyl starch and risk of repeat craniotomy for hematoma evacuation were examined.
Using a retrospective cohort of neurosurgical patients at Duke University Medical Center between March 2005 and March 2012, patient characteristics were compared between those who developed post-craniotomy hemorrhage and those who did not.
A total of 4,109 craniotomy procedures were analyzed with 61 patients having repeat craniotomy for post-operative hemorrhage (1.5%). The rate of reoperation in the group receiving 6% High Molecular Weight Hydroxyethyl Starch (Hextend(®)) was 2.6 vs. 1.3% for patients that did not receive hetastarch (P = 0.13). The reoperation rate for those receiving 6% hydroxyethyl Starch 130/0.4 (Voluven(®)) was 1.4 vs. 1.6% in patients not receiving Voluven (P = 0.85).
In this retrospective cohort, intra-operative hydroxyethyl starch was not associated with an increased risk of post-craniotomy hemorrhage.
Available from: Oliver Kempski
- "But as CT or MRI can only provide a macroscopic view of a particular tumor and histopathology remains unclear, stereotactic biopsy still plays an important role in pre- and perioperative care in patients suffering from brain tumors - as Callovini et al.  described. Although it is relatively safe and effective to perform , conventional histology can only provide a snapshot of a small portion of the tumor and is subject to cutting-, embedding- and staining artifacts , . Endomicroscopic equipment might easily be integrated into a minimally invasive or endoscopic setting and provides immediate and intraoperativ histopathologic diagnosis of the entire entity at real time which might be directly followed by therapeutic neurosurgical intervention. "
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ABSTRACT: Early detection and evaluation of brain tumors during surgery is crucial for accurate resection. Currently cryosections during surgery are regularly performed. Confocal laser endomicroscopy (CLE) is a novel technique permitting in vivo histologic imaging with miniaturized endoscopic probes at excellent resolution. Aim of the current study was to evaluate CLE for in vivo diagnosis in different types and models of intracranial neoplasia. In vivo histomorphology of healthy brains and two different C6 glioma cell line allografts was evaluated in rats. One cell line expressed EYFP, the other cell line was used for staining with fluorescent dyes (fluorescein, acriflavine, FITC-dextran and Indocyanine green). To evaluate future application in patients, fresh surgical resection specimen of human intracranial tumors (n = 15) were examined (glioblastoma multiforme, meningioma, craniopharyngioma, acoustic neurinoma, brain metastasis, medulloblastoma, epidermoid tumor). Healthy brain tissue adjacent to the samples served as control. CLE yielded high-quality histomorphology of normal brain tissue and tumors. Different fluorescent agents revealed distinct aspects of tissue and cell structure (nuclear pattern, axonal pathways, hemorrhages). CLE discrimination of neoplastic from healthy brain tissue was easy to perform based on tissue and cellular architecture and resemblance with histopathology was excellent. Confocal laser endomicroscopy allows immediate in vivo imaging of normal and neoplastic brain tissue at high resolution. The technology might be transferred to scientific and clinical application in neurosurgery and neuropathology. It may become helpful to screen for tumor free margins and to improve the surgical resection of malignant brain tumors, and opens the door to in vivo molecular imaging of tumors and other neurologic disorders.
Available from: Margarida Julia-Sape
- "However, stereotactic brain biopsy has significant risks, with an estimated morbidity of 2.4–3.5% (2, 3) and a death rate of 0.2–0.8% (2, 4). There are situations in which repeated biopsies may not be advisable or practical, as in brain tumours of children or in aged patients in a bad physical condition. "
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ABSTRACT: The eTUMOUR (eT) multi-centre project gathered in vivo and ex vivo magnetic resonance (MR) data, as well as transcriptomic and clinical information from brain tumour patients, with the purpose
of improving the diagnostic and prognostic evaluation of future patients. In order to carry this out, among other work, a
database—the eTDB—was developed. In addition to complex permission rules and software and management quality control (QC),
it was necessary to develop anonymization, processing and data visualization tools for the data uploaded. It was also necessary
to develop sophisticated curation strategies that involved on one hand, dedicated fields for QC-generated meta-data and specialized
queries and global permissions for senior curators and on the other, to establish a set of metrics to quantify its contents.
The indispensable dataset (ID), completeness and pairedness indices were set. The database contains 1317 cases created as
a result of the eT project and 304 from a previous project, INTERPRET. The number of cases fulfilling the ID was 656. Completeness
and pairedness were heterogeneous, depending on the data type involved.
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