Improving Forward Infusion Pressure during Brain Tumor Embolization with the Double Catheter and Coil Technique

Meningioma is an intracranial tumor that generally involves meninges. This tumor canbe found along the dura layers at the skull base. Meningioma has vast vascularization from thearteries near dura attachment. Pre-operative embolization technique is an effective strategy toprevent intra-operative complications and better outcomes. The patient was a 24 year-oldwoman who has been complaining of headaches since 2 months ago. The CT Scan resulted in a12 x 9 x 7 cm isodense mass in the left temporoparietal enhanced homogenously by contrast.Pre-operative embolization was performed on the tumor feeding artery as a strategy to preventintra-operative blood loss. A left frontotemporosphenoidal craniotomy was performed 10 daysafter embolization to remove the tumor. A complete resection was successfully achieved withless intraoperative blood loss and without complication. The pathology examination resulted inmeningotheliomatous meningioma. A follow-up picture showed no recurrent tumor afterresection and the patient had no symptoms and neurological deficits until 6 months after thesurgery. In conclusion, meningioma is a common intracranial tumor with a lot of blood supply.However, tumor resection can be safely and efficaciously performed with good pre-operativestrategy.Keywords: brain tumor, embolization, meningioma, resection, skullbase

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Microvasculature and structure of hemal lymph nodes in the wall of the rabbit bladder: a vascular corrosion casting and EM study

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100141743 ◽

1995 ◽

Vol 53 ◽

pp. 1074-1075

Author(s):

F.E. Hossler ◽

M.I. McKamey ◽

F.C. Monson

Keyword(s):

Lymph Nodes ◽

Light Microscopy ◽

Corrosion Casting ◽

Fixed Tissue ◽

Infusion Pressure ◽

India Ink ◽

Cacodylate Buffer ◽

Rabbit Bladder ◽

Lateral Walls ◽

Comprehensive Study

A comprehensive study of the microvasculature of the normal rabbit bladder, revealed unusual "capillary glomeruli" along the lateral walls. Here they are characterized as hemal lymph nodes using light microscopy, SEM, TEM, ink injection, and vascular casting.Bladders were perfused via a cannula placed in the abdominal aorta with either 2% glutaraldehyde in 0.1M cacodylate buffer (pH 7.4) for fixation, 10% India ink in 0.9% saline and 0.1M phosphate (pH 7.4) for vessel tracing, or resin (Mercoximethylmethacrylate: catalyst, 4:1:0.3; Ladd Research Industries) for vascular corrosion casting. Infusion pressure was 100mm Hg. Fixed tissue was sectioned from epon-araldyte resin, and stained with toluidine blue for light microscopy, and lead and uranium for TEM. Ink injected tissue was photographed directly from saline-filled bladders illuminated from below. Resin-filled tissue was macerated in 5% KOH and distilled water. Casts were critical point dried, sputter coated with goldpalladium, and examined by routine SEM at 10 KV.

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