scholarly journals Double-checked preoperative localization of brain lesions

2003 ◽  
Vol 61 (3A) ◽  
pp. 552-554 ◽  
Author(s):  
Yvens B. Fernandes ◽  
Guilherme Borges ◽  
Ricardo Ramina ◽  
Edmur F. Carelli

We describe two simple methods that can be used together or alone to localize brain convexity lesions. These methods are based on computerized tomography or magnetic resonance imaging to calculate the position of a given lesion under the skin and help neurosurgeons to plan their surgical approaches. Using spatial fixed points traced on the radiological scans and transposing them to the skin scalp allows the lesion to be projected or drawn on the calvaria.

1995 ◽  
Vol 82 (3) ◽  
pp. 511-513 ◽  
Author(s):  
Shigeya Tanaka ◽  
Koichi Uetsuhara ◽  
Tetsuzou Tomosugi ◽  
Kouichi Moroki ◽  
Masahiko Yamada ◽  
...  

✓ A new technique for preoperative localization of brain lesions using magnetic resonance imaging and a marking device is described. The projection of lesions, especially superficial brain tumors, is demonstrated on the scalp, with an acceptable tolerance for open procedures. This simple and inexpensive method, which was used in a group of 34 patients, can assist surgeons in planning an operative approach to intracranial lesions.


2001 ◽  
Vol 119 (6) ◽  
pp. 206-211 ◽  
Author(s):  
Eduardo Toledo de Aguiar ◽  
Alex Lederman ◽  
Celso Higutchi ◽  
Gerd Schreen

CONTEXT: Indications and results of carotid endarterectomy have been defined from clinical multicentric trials like the European Carotid Surgery Trialists, North-American Symptomatic Carotid Endarterectomy Trial and Asymptomatic Carotid Atherosclerosis Study. The patients included in these trials were highly selected, as were the surgeons performing the operations. Clinical practice is different but the same results should be achieved. OBJECTIVE: To study indications, technique, early and late results, and whether carotid endarterectomy has been performed in accordance with standards defined by multicentric trials. DESIGN: Retrospective case report study. SETTING: A tertiary care private hospital. PARTICIPANTS: 57 patients, on whom 70 carotid endarterectomies were performed over a 10-year period. The median age was 66.4 ± 7.8 years; 43 (75.4%) were male, 41 (71.9%) hypertensive, 36 (63.1%) current smokers and 24 (21.0%) had diabetes. Bilateral carotid stenosis was present in 31 (54.3%) patients, peripheral arterial occlusions in 32 (56.1%) and ischemic cardiopathy in 25 (43.1%). All patients had had angiography and 41 (71.9%) had also had a duplex-scan of neck arteries. Cerebral imaging via computerized tomography scan or magnetic resonance imaging was obtained for 36 patients. Patients were followed up over a period of one to 122 months. MAIN MEASUREMENTS: early and late post-operative death, early and late post-operative stroke, and recurrence of atheroma plaque and symptoms relative to carotid stenosis. RESULTS: There was one post-operative death (1.4%) caused by myocardial infarction and two early strokes (2.8%): a total complication rate of 4.2%. After 3 and 5 years, 95.4% and 81.3% of patients respectively were stroke-free and 72.8% and 67.3% were alive. There were four recurrences and two of them related to stroke. Forty-nine (70%) stenoses operated on were symptomatic. Brain infarction was detected in 59.2% of patients who underwent computerized tomography scan or magnetic resonance imaging. CONCLUSIONS: Carotid endarterectomy was done in accordance with international standards. The most frequent cause of late death was myocardial infarction, and recurrences were related to stroke. Patients should be followed up closely.


1989 ◽  
Vol 70 (2) ◽  
pp. 274-276 ◽  
Author(s):  
Robert F. Traflet ◽  
Ashok R. Babaria ◽  
Giancarlo Barolat ◽  
H. T. Doan ◽  
Carlos Gonzalez ◽  
...  

✓ A case is presented in which a solitary chondroma arose from the clivus of a patient with Ollier's disease. These tumors are rare. The diagnostic value of computerized tomography and magnetic resonance imaging is discussed.


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