scholarly journals Maxillary ameloblastoma: Report of three cases

2005 ◽  
Vol 52 (4) ◽  
pp. 229-236
Author(s):  
Petar Sapundziev ◽  
Neli Ilieva
Keyword(s):  
Clinical Practice ◽  
Nasal Cavity ◽  
Postoperative Period ◽  
Female Child ◽  
Subtotal Resection ◽  
X Ray ◽  
Surgical Methods ◽  
Posterior Maxilla ◽  
Male Patients

The purpose of this report was to analyse surgical methods for treatment of maxillary ameloblastoma and present three cases from our clinical practice in the postoperative period from 1,5 to 3,5 years. We present three patients with maxillary ameloblastoma with different etiology - two male patients and one female child. The location of ameloblastoma next to the maxillary sinus and nasal cavity indicates long-term and asymptomatic growth and comprises difficulties in clinical and X - ray examination. Ameloblastomas in posterior maxilla are very aggressive, more rapidly penetrate adjacent tissues and treatment must be radical. Subtotal resection of maxilla was carried out in all three patients, because this surgical method successfully eradicates tumor and minimizes the possibility for recurrences.

scholarly journals Gender dimorphism in body composition abnormalities in acromegaly: males are more affected than females

2008 ◽  
Vol 159 (6) ◽  
pp. 773-779 ◽  
Author(s):  
N Sucunza ◽  
M J Barahona ◽  
E Resmini ◽  
J M Fernández-Real ◽  
J Farrerons ◽  
...  
Keyword(s):  
Body Composition ◽  
Total Mass ◽  
Mineral Content ◽  
Gender Dimorphism ◽  
Age And Gender ◽  
X Ray ◽  
Male Patients ◽  
And Gender ◽  
Design And Methods

BackgroundAcromegaly changes body composition (BC), but long-term gender differences have not been reported.ObjectiveTo evaluate BC in active and controlled acromegalic patients.Design and methodsClinical and biochemical variables and BC (by dual-energy X-ray absorptiometry) were evaluated in 60 acromegalic patients (19 active, 41 controlled) and 105 controls, matched for age and gender.ResultsAcromegalic males (n=24) had more total mass (89±13 vs 76.5±15.3 kg, P<0.001), lean body mass (LBM; 64.6±8.7 vs 56.4±5.8 kg, P<0.001), and bone mineral content (BMC; 2.9±0.5 vs 2.6±0.3 kg, P<0.05) than controls (n=33). Controlled male patients (n=14) had more total mass (89±14.7 vs 76.5±15.3 kg, P<0.05) and a trend to have more LBM (61.8±9.4 vs 56.4±5.8 kg, P=0.065) than controls. Only in active disease was a decrease in fat mass (FM) observed, compared with controlled patients and controls (males: 19.5±5.3 vs 27±6.2 and 25.9±4%, P<0.001; females: 30.3±6.7 vs 37.1±5.8 and 36.5±6.6%, P<0.01). In females, no further differences were observed. No differences in BMC were found between eugonadal and hypogonadal acromegalic patients, but in hypogonadal females, acromegaly appeared to prevent the BMC loss seen in hypogonadal postmenopausal controls. GH and IGF1 levels were negatively correlated with FM (males, P<0.05; females, P<0.001), but in the regression analysis GH was a predictor of FM only in women.ConclusionsControl of acromegaly reverts decreased FM in both genders; only in males more total mass and a trend for more LBM persist. The anabolic effect of GH on bone reverted in cured males, but persisted in females and appeared to override the bone loss of menopause.

scholarly journals LONG-TERM RESULTS AFTER VIDEO ENDOSCOPIC MYOTOMY BY HELLER WITH FUNDOPLICATION BY DOR IN PATIENTS WITH 2-4 STAGES OF ACHALASIA

2021 ◽  
pp. 40-49
Author(s):  
V. A. Gankov ◽  
E. A. Tseimakh ◽  
G. I. Bagdasaryan ◽  
A. R. Andreasyan ◽  
S. A. Maslikova
Keyword(s):  
Surgical Treatment ◽  
Postoperative Period ◽  
Clinical Symptoms ◽  
Clinical Manifestations ◽  
Long Term Results ◽  
Esophageal Function ◽  
X Ray ◽  
Leading Symptom ◽  
Instrumental Methods

Relevance. Treatment of achalasia of the cardia (AС) is currently palliative, aimed at reducing the manifestation of clinical symptoms of the disease. Together with instrumental methods of examination of esophageal function, the Eckardt scale and the GIGLI questionnaire are convenient and simple tools for evaluating results in the long-term postoperative period.The aim of the study was to evaluate the long-term results of surgical treatment of patients with 2-4 stages of AС, after laparoscopic Нeller myotomy with anterior hemiesophagofundoplication by Dor to the results of special methods of esophageal examination and patient questionnaires using the Eckardt scale and the GIGLI questionnaire.Materials and methods. The work included the results of examinations of 103 patients who underwent video laparoscopic Нeller myotomy, with anterior hemiesophagofundoplication by Dor. The period of examination in the postoperative period was from 3 to 7 years. The results of X-ray examination of the esophagus and stomach, manometry of the esophageal and esophageal-gastric junction before and after surgery were studied , and patients were also surveyed according to the Eckardt scale and the GIGLI questionnaire.Results. The analysis of the results of instrumental methods of studying the function of the esophagus in the pre – and postoperative periods showed that the given manometry of the esophagus and esophageal-gastric junction, X-ray of the esophagus and stomach significantly improved in the postoperative period in patients with all stages of the disease. The results of patients of 4th stage AC compared with the results of 2nd and 3rd stages patients were worse(p<0,05).The leading symptom of AK-dysphagia in the long-term postoperative period decreased in all the studied patients, the results were better in patients with stage 2, worse in patients with stage 4 of AK (p<0,05).The leading symptom of AK-dysphagia in the long-term postoperative period decreased in all the studied patients, the 2nd stage patients results were better, 4th stage patients results were worse (p<0,05).Conclusions. After video-endoscopic Нeller myotomy with fundoplication by Dor, the indicators of esophageal manometry and esophageal and stomach radiography significantly improve, the results of the Eckardt scale and GIGLI questionnaire survey of patients show a significant decrease in the severity of clinical manifestations of AC in the balls. This method of surgical treatment can be recommended already at the 2nd stage of AC and as an organpreserving operation for 4th stage.

Justification of the diagnostic algorithm and treatment strategies in patients with severe chronic slow-transit constipation

2021 ◽  
Vol 23 (3) ◽  
pp. 75-82
Author(s):  
Vadim B. Samedov ◽  
Pavel N. Romashchenko ◽  
Gennady O. Revin
Keyword(s):  
Surgical Treatment ◽  
Sigmoid Colon ◽  
Diagnostic Algorithm ◽  
Long Term Results ◽  
Subtotal Resection ◽  
Slow Transit Constipation ◽  
X Ray ◽  
Slow Transit ◽  
Transit Constipation

Surgical treatment of patients with chronic slow-transit constipation leads to unsatisfactory results in almost a third of cases. It appears relevant to the search for the causes of unsatisfactory results of surgical interventions in such patients and the need to develop a rational diagnostic algorithm; its implementation will allow us to determine the indications for surgical treatment and justify the volume of colon resection. For this purpose, the results of the examination and treatment of 53 patients with constipation were analyzed. The median disease duration was 15 years, and the median duration of constipation was 6.2 1.6 days. Patients were divided into a group with a positive effect of conservative treatment and a group without the expected effect. The symptoms, results of laboratory tests of blood and feces, and instrumental studies of the colon were analyzed. A balloon expulsion test was used to exclude proctogenic constipation. The evacuation function of the colon was studied by X-ray examination, while the transit time of barium sulfate or X-ray contrast markers through the gastrointestinal tract was estimated. Twenty-four patients underwent surgery for chronic slow-transit constipation, while the sigmoid colon was removed in one patient, including 7-left-sided hemicolectomy and 16-subtotal resection of the colon. Long-term results were examined in the period from 3 to 6 months after surgery. In the total examination of the semiotics of chronic slow-transit constipation, the results did not show significant differences between the groups of patients and did not allow us to justify the stratification into severe and non-severe disease course by its specific symptoms. The use of X-ray contrast markers for the assessment of the state of the evacuation function of the colon makes it possible to quantify the severity of various motor disorders and justify the choice of the volume of its resection. The analysis of the long-term results of the treatment of patients with chronic slow-transit constipation allows us to conclude that segmental resections of the colon (left-sided hemicolectomy, resection of the sigmoid colon) have a good therapeutic effect if the preoperative examination revealed a segmental type of failure of the evacuation function of the colon, and subtotal resection of the colon is appropriate for the common type. The absence of negative results of surgical treatment of patients with chronic slow-transit constipation, in which the formation of a colonic anastomosis was performed with a short stump of the sigmoid colon, indicates the possibility of using this option to complete the surgical intervention.

Composite Pleomorphic Xanthoastrocytoma-Ganglioglioma Presenting as a Suprasellar Mass: Case Report

Neurosurgery ◽  
2003 ◽  
Vol 52 (6) ◽  
pp. 1465-1469 ◽  
Author(s):  
David John Yeh ◽  
Richard B. Hessler ◽  
E. Andrew Stevens ◽  
Mark R. Lee
Keyword(s):  
Frozen Section ◽  
Pleomorphic Xanthoastrocytoma ◽  
Neurological Deficits ◽  
Subtotal Resection ◽  
Histopathological Diagnosis ◽  
Rare Type ◽  
Long Term Follow Up ◽  
Male Patients ◽  
Final Histological Diagnosis

Abstract OBJECTIVE AND IMPORTANCE Composite pleomorphic xanthoastrocytoma (PXA)-ganglioglioma (GG) is a recently recognized, rare type of neoplasm that most commonly presents as a temporal seizure focus among male patients less than 30 years of age. This case represents the only reported suprasellar presentation, with the youngest reported age at diagnosis. CLINICAL PRESENTATION We present the case of a 12-year-old boy with new-onset diplopia who was diagnosed as having a large suprasellar mass, which was presumptively designated a craniopharyngioma on the basis of its clinical and radiological appearance. INTERVENTION Gross total resection of a well-encapsulated tumor with adjacent cysts was achieved, without postoperative neurological deficits. Frozen-section studies suggested pilocytic astrocytoma; however, the final histological diagnosis was composite PXA-GG. CONCLUSION Composite PXA-GG, although extremely rare, may present as a pediatric suprasellar mass. The histopathological diagnosis is contingent on the demonstration of distinct coincident PXA and GG components. The prognosis after gross subtotal resection is likely favorable; however, long-term follow-up monitoring is indicated for these rare neoplasms.

Long‐term outcomes of the implants accidentally protruding into nasal cavity extended to posterior maxilla due to inferior meatus pneumatization

2019 ◽  
Vol 22 (1) ◽  
pp. 105-111
Author(s):  
Won‐Bae Park ◽  
Young‐Jin Kim ◽  
Kyung Lhi Kang ◽  
Hyun‐Chang Lim ◽  
Ji‐Young Han
Keyword(s):  
Nasal Cavity ◽  
Long Term Outcomes ◽  
Inferior Meatus ◽  
Posterior Maxilla

Preparation And elemental analysis of ancient fibers

1987 ◽  
Vol 45 ◽  
pp. 410-411
Author(s):  
Allen Angel ◽  
Kathryn A. Jakes
Keyword(s):  
Cross Sections ◽  
Physical Structure ◽  
Energy Dispersive ◽  
Archaeological Sites ◽  
X Ray ◽  
Long Term Storage ◽  
Backscattered Electron ◽  
Electron Imaging

Fabrics recovered from archaeological sites often are so badly degraded that fiber identification based on physical morphology is difficult. Although diagenetic changes may be viewed as destructive to factors necessary for the discernment of fiber information, changes occurring during any stage of a fiber's lifetime leave a record within the fiber's chemical and physical structure. These alterations may offer valuable clues to understanding the conditions of the fiber's growth, fiber preparation and fabric processing technology and conditions of burial or long term storage (1).Energy dispersive spectrometry has been reported to be suitable for determination of mordant treatment on historic fibers (2,3) and has been used to characterize metal wrapping of combination yarns (4,5). In this study, a technique is developed which provides fractured cross sections of fibers for x-ray analysis and elemental mapping. In addition, backscattered electron imaging (BSI) and energy dispersive x-ray microanalysis (EDS) are utilized to correlate elements to their distribution in fibers.

Long-term variations in individual particle types in the aerosol of Phoenix, Arizona, as determined using automated electron microprobe analysis and multivariate statistical techniques

1993 ◽  
Vol 51 ◽  
pp. 742-743
Author(s):  
Karen A. Katrinak ◽  
James R. Anderson ◽  
Peter R. Buseck
Keyword(s):  
Electron Microprobe ◽  
Fine Fraction ◽  
Coarse Fraction ◽  
Motor Vehicles ◽  
Multivariate Statistical Methods ◽  
Multivariate Statistical ◽  
X Ray ◽  
Mineral Particles ◽  
Anthropogenic Air Pollutants

Aerosol samples were collected in Phoenix, Arizona on eleven dates between July 1989 and April 1990. Elemental compositions were determined for approximately 1000 particles per sample using an electron microprobe with an energy-dispersive x-ray spectrometer. Fine-fraction samples (particle cut size of 1 to 2 μm) were analyzed for each date; coarse-fraction samples were also analyzed for four of the dates.The data were reduced using multivariate statistical methods. Cluster analysis was first used to define 35 particle types. 81% of all fine-fraction particles and 84% of the coarse-fraction particles were assigned to these types, which include mineral, metal-rich, sulfur-rich, and salt categories. "Zero-count" particles, consisting entirely of elements lighter than Na, constitute an additional category and dominate the fine fraction, reflecting the importance of anthropogenic air pollutants such as those emitted by motor vehicles. Si- and Ca-rich mineral particles dominate the coarse fraction and are also numerous in the fine fraction.

Long-Term Radiologic Follow-Up of Tumor Remnants after Subtotal Resection of Acoustic Neuromas

Skull Base ◽  
2007 ◽  
Vol 16 (S 1) ◽  
Author(s):  
Fred Barker ◽  
Steven Kalkanis ◽  
Michael McKenna ◽  
Dennis Poe ◽  
Joseph Nadol ◽  
...  
Keyword(s):  
Subtotal Resection ◽  
Acoustic Neuromas

Study of Natural Minerals of U-Ryrochlore-Type Structure as Analogues of Plutonium Ceramic Waste-form

2002 ◽  
Vol 713 ◽  
Author(s):  
Roman V. Bogdanov ◽  
Yuri F. Batrakov ◽  
Elena V. Puchkova ◽  
Andrey S. Sergeev ◽  
Boris E. Burakov
Keyword(s):  
Chemical Shifts ◽  
Pyrochlore Structure ◽  
Type Structure ◽  
Waste Form ◽  
X Ray ◽  
Ceramic Waste ◽  
Natural Minerals ◽  
The Us ◽  
Pyrochlore Type

ABSTRACTAt present, crystalline ceramic based on titanate pyrochlore, (Ca,Gd,Hf,Pu,U)2Ti2O7, is considered as the US candidate waste form for the immobilization of weapons grade plutonium. Naturally occuring U-bearing minerals with pyrochlore-type structure: hatchettolite, betafite, and ellsworthite, were studied in orders to understand long-term radiation damage effects in Pu ceramic waste forms. Chemical shifts (δ) of U(Lδ1)– and U(Lβ1) – X-ray emission lines were measured by X-ray spectrometry. Calculations were performed on the basis of a two-dimensional δLá1- and δLδ1- correlation diagram. It was shown that 100% of uranium in hatchettolite and, probably, 95-100% of uranium in betafite are in the form of (UO2)2+. formal calculation shows that in ellsworthite only 20% of uranium is in the form of U4+ and 80% of the rest is in the forms of U5+ and U6+. The conversion of the initial U4+ ion originally occurring in the pyrochlore structure of natural minerals to (UO2)2+ due to metamict decay causes a significant increase in uranium mobility.

Analysis of crystallite size changes in a hematite and magnetite formed on steel used in the power idustry

2017 ◽  
Vol 1 (21) ◽  
pp. 65-73
Author(s):  
Monika Gwoździk
Keyword(s):  
Elevated Temperature ◽  
Oxide Layer ◽  
Cross Section ◽  
X Ray ◽  
Term Operation ◽  
Diffraction Line Profile ◽  
Crystallite Sizes ◽  
Scherrer Formula ◽  
Pipe Outlet

The paper presents results of studies on the crystallite sizes of oxide layer formed during a long-term operation on 10CrMo9-10 steel at an elevated temperature (T = 545° C, t = 200,000 h). This value was determined by a method based on analysis of the diffraction line profile, according to a Scherrer formula. The oxide layer was studied on a surface and a cross-section at the outer and inner site on the pipe outlet, at the fire and counter-fire wall of the tube. X-ray studies were carried out on the surface of a tube, then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer.

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