Papillary glioneuronal tumor: unexplored entity.

Papillary glioneuronal tumors represent a new and rare entity of an uncommon morphologic subtype of low-grade mixed neuronal-glial neoplasms with an unclear etiology. They are described as benign lesions with extraventricular localization. We report the second case of papillary glioneuronal tumor with recurrent nature after gross-total resection, and the third case of this tumor with intraventricular localization. While conventional magnetic resonance imaging of papillary glioneuronal tumors is well described in literature, there are no data based on advanced magnetic resonance techniques. The present article represents a review of clinicopathological and both conventional and advanced magnetic resonance imaging characteristics of papillary glioneuronal tumors, with focus on 2 cases with atypical course and localization.

Intraventricular textiloma with granuloma formation following third ventricle colloid cyst resection - a case report.

Despite precautions, cotton and gauze pads used for dissection or to achieve haemostasis during neurosurgical procedures can inadvertently be left behind and result in clinically symptomatic or asymptomatic and radiologically apparent mass lesion, sometimes referred to as "textilomas" or "gossypibomas", often mimicking recurrent tumour or abscess on neuroimaging studies. We report the neuroimaging evaluation, including computed tomography (CT), magnetic resonance imaging (MRI) and spectroscopy (H1-MRS), in a case of textiloma developing after the treatment of a third ventricle colloid cyst.

[Diffusion and perfusion magnetic resonance imaging in evaluation of primary glial brain tumors].

INTRODUCTION: Diffusion (DWI) and perfusion (PWI) imaging can give important data about physiological characteristics of tissue, which complete morphologic findings from conventional MRI. The aim of this study is to estimate the value of these MRI technics in evaluation of primary glial brain tumors. MATERIALS AND METHODS: The significance of DWI and PWI in differentiation of histologically proven low- and high-grade gliomas was estimated in 48 patient with diagnosed brain gliomas. ADC and rCBV values were compared by aplication of Mann-Whitney test, and logistic regression analysis was used to determine which of these two parameters contributed the most in increasing the diagnostic accuracy, ia. its sensitivity, specificity and predictive velues. ROC curves were constructed to determine threshold values for differentiation of low- from high-grade lesions. RESULTS: Statistical significance were showed between mean values of rCBV for low-grade (0.82) and high-grade (5.32) gliomas, which was not found for values of ADC parameters. Threshold rCBV value of 1.23 was determinated for discrimination between low- and high-grade gliomas with a sensitivity of 83.2% and a specificity of 77.5%. CONCLUSION: Conventional MRI combined with PWI increases the accuracy in determination of glioma grade.

[Comparative evaluation of conventinal and dynamic magnetic resonance imaging, of the pituitary microadenomas].

OBJECTIVE: This study tried to determine if there is a difference between standard and dynamic MR examination in detection of pituitary microadenoma. SUBJECTS AND METHODS: We have included twenty seven patients with suspicious pituitary tumor. All patients have been hospitalized for endocrinology examination between June 2007 and May 2008 in Institute for Endocrinology, diabetes and metabolic diseases of Clinical Center of Serbia. MR examinations have been preformed in MR Center of Clinical Center of Serbia. RESULTS: Twenty seven patients were included in our study. Only in four of them pituitary microadenoma was detected using dynamic MR examination. One was somatotrophin secreting adenoma, and three were corticotrophin realizing adenomas. There were no statistically significant differences between conventional and dynamic MR examination. CONCLUSION: Dynamic MR Examination as method can hardly match standard MR examination which remains standard in detection of pituitary microadenomas.

[Comparison of detection of brain lesions in multiple sclerosis in magnetic resonance imaging at magnetic field strength of 1.0 and 3.0 Tesla].

To estimate the relative sensitivity of MR examination for brain lesions in multiple sclerosis at 1.0 Tesla (T) and 3.0 T using identical acquisition conditions. 54 patients with multiple sclerosis were examined both at 1.0T (Siemens Impact Expert) and 3.0T (Philips Intera) using T1-weighted spin echo (T1W-SE) with and without gadolinium contrast injections, T2W SE and fluid attenuated inversion recovery (FLAIR) imaging. Images were examined independently by three experienced neuroradiologists using focal lesion counting. 3.0T scans compared with 1.0T scans demonstrate a 27.3%, increase in the number of detected contrast enhanced lesions and an 22.7% increase in the number of detected lesions on FLAIR MR tomograms. Highfield 3.0T MR imaging demonstrates better sensitivity in the detection of focal brain lesions in multiple sclerosis. This improvement is more apparent in contrast enhanced lesion detection and less noticeable in FLAIR detected lesions.

[Acute gastrointestinal hemorrhage after placement of a peritoneojugular shunt]. / Akutna gastrointestinalna krvarenja nakon ugradnje peritoneojugularnog santa.

Since 1984 the peritoneovenous (LeVeen) shunt has been installed in 33 patients (10 females 30.3%, and 23 males 69.7%), with the average age of 54 +/- 8 years all in the oedema--ascitic decompensation phase of their primary illness. The control group consisted of 39 patients with identical etiology and primary illness stadium, sex and age structure and duration of primary illness, all treated with medicament - diet therapy. All the operated patients and those treated with medicament--diet regime died. Their autopsy findings were confronted. The aim of this study was to indicate the type and frequency of digestive hemorrhage in this population on our own clinical--patient material. Gastrointestinal hemorrhage was the cause of death in 8 (24.24%) patients out of the group operated on, and 6 (15.3%) from the control group. The isolated rupture of esophageal varices was the cause of death in one (3.03%) patient out of the group operated on, and in 5 (12.12%) patients from the control group, the rupture of esophageal varices with toxic vasculitis in 3 (0.09%) patients from the group operated on, and not in one out of the control group; rupture of esophageal varices associated with toxic vasculitis and disorders of the hemostatic mechanism appeared in 4 (12.12%) of patients from the group operated on, and in 1 (2.56%) of the control group. On the basis of the presented it can be concluded that gastrointestinal hemorrhage is a significantly more frequent cause of death in the group operated on than in the control group, and that hemorrhages are of an all the more complex etiology when the flow-in of ascites into circulation is greater. Hemodilution and endotoxins are to blame for their occurrence and it is necessary to preoperatively conduct, beside the control of the hemostatic mechanism, also the test of ones own ascitic burdening and to determine the level of endotoxin in the ascites.

[Anesthesia in peritoneovenous shunt placement]. / Anestezija za ugradnju peritoneojugularnog santa.

Since 1984 the peritoneovenous shunt has been installed in 33 patients because of resistant ascites. The aim of this study was to find the optimal type of anesthesia in our conditions on our own clinical-patient material. All patients were classified by the ASA, Goldman, Child and Child-Puigh score. The patient, surgeon and anesthesiologist were polled about the quality of anesthesia, and all observed complications were followed, like after different premedications as well as in the course and after different types of neuroleptic anesthesia. General neuroleptic anesthesia was applied in 23 patients (69.7%), one was operated on in ketamine anesthesia (3.0%) and 9 (27.3%) in local anesthesia with 2% Xylocaine. After premedication with Thalamonal in all patients there came to a fall in arterial pressure for more than 20% of initial values and the feeling of uneasiness and fear was present. All patients with local anesthesia absolutely needed additional application of sedation or analgesia, especially during the formation of the subcutaneous tunnel, and neither patient nor surgeon were satisfied with the achieved comfort. During the course of neuroleptic anesthesia with Thalamonal hypotension developed, in 17/20 patients an in 2/20 the presence of prolonged apnea demanded additional artificial ventilation. In the patient operated on in ketamine anesthesia, an acute psychotic reaction developed, followed by visual and acustic hallucinations without signs of metabolic encephalopathy. On the basis of our own experience, we conclude that general neuroleptic anesthesia with the use of Flormidal as an anesthetic and Fentanil as an analgetic, is the method of choice, and that local anesthesia can be recommended only on one operative site (except the subcutaneous tunnel).

[Therapy of resistant ascites using the peritoneojugular (Leveen shunt)]. / Terapija rezistentnog ascita peritoneojugularnim (Le Veen) santom.

Since 1984 the peritoneovenous shunt has been installed in 33 patients (10 females - 30.3%; 23 males - 69.7%) of the average age of 54 +/- 8, all in the phase of therapeutically resistant ascites (alcoholic cirrhosis 28 - 84.85%; 4 - 12.12% posthepatitic cirrhosis; and 1 - 3.03% hepatic amyloidosis). The control group consisted of 39 patients (11 females - 28.2% and 28 males - 71.8%) treated in an identical time span with the strict conduction of medicament-diet therapy. The aim of this study was to check the value of this method on our own clinical-patient material, and therefore establish the incidence of complications. By the use of a unique protocol we followed mortality, morbidity, body weight, belly circumference, diuresis, the ultrasonographic finding of the abdominal cavity and the complications which appeared. Out of the group operated on 19 (57%) of the patients died, and so did all the control group patients as well. The average life duration was 275 +/- 810 days in the group operated on, and 44 +/- 29 (p less than 0.005) in the control group. All those alive (14.33-42.42%) lived longer than six months. Six patients lived longer than one year (42.85%), 4 (28.47%) longer than two years, and one (7.14%) longer than three years. There is a statistically significant decrease in body weight, belly circumference, diuresis increase and the consequent ascites withdrawal. DIC occurred in 2 patients, shunt malposition in 2, saccular dilatation in 1, plastic peritonitis in 6, and ileus in 1 patient. Not one of the listed complications resulted by death.(ABSTRACT TRUNCATED AT 250 WORDS)