Left upper quadrant laparoscopic placement: effects of insertion angle and body mass index on distance to posterior peritoneum by magnetic resonance imaging

2010 ◽  
Vol 2010 ◽  
pp. 325-326
Author(s):  
J.S. Dungan
2009 ◽  
Vol 201 (5) ◽  
pp. 522.e1-522.e5 ◽  
Author(s):  
Nichole M. Giannios ◽  
Vikas Gulani ◽  
Kelsey Rohlck ◽  
Rebecca L. Flyckt ◽  
Stacie J. Weil ◽  
...  

2022 ◽  
pp. 135245852110618
Author(s):  
Juan Manuel Escobar ◽  
Marianna Cortese ◽  
Gilles Edan ◽  
Mark S Freedman ◽  
Hans-Peter Hartung ◽  
...  

Background: There is a lack of studies on the association between obesity and conversion from a clinically isolated syndrome (CIS) to multiple sclerosis (MS). Objective: The aim of this study was to determine whether obesity predicts disease activity and prognosis in patients with CIS. Methods: Body mass index (BMI) at baseline was available for 464 patients with CIS in BENEFIT. Obesity was defined as BMI ⩾ 30 kg/m2 and normal weight as 18.5 ⩽ BMI < 25. Patients were followed up for 5 years clinically and by magnetic resonance imaging. Hazard of conversion to clinically definite (CDMS) or to 2001 McDonald criteria (MDMS) MS, annual rate of relapse, sustained progression on Expanded Disability Status Scale (EDSS), change in brain and lesion volume, and development of new brain lesions were evaluated. Results: Obese individuals were 39% more likely to convert to MDMS (95% CI: 1.02–1.91, p = 0.04) and had a 59% (95% CI: 1.01–2.31, p = 0.03) higher rate of relapse than individuals with normal weight. No associations were observed between obesity and conversion to CDMS, sustained progression on EDSS or magnetic resonance imaging (MRI) outcomes, except for a larger reduction of brain volume in obese smokers as compared to normal weight smokers (−0.82%; 95% CI: −1.51 to −0.12, p = 0.02). Conclusion: Obesity was associated with faster conversion to MS (MDMS) and a higher relapse rate.


2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Wazzan S. Aljuhani ◽  
Salman S. Qasim ◽  
Abdullah Alrasheed ◽  
Jumanah Altwalah ◽  
Mohammed J. Alsalman

Abstract Background The posterior tibial slope (PTS) is crucial in knee joint stability and in maintaining the natural movement of the knee. An increase in the PTS is associated with various knee pathologic conditions, such as anterior cruciate ligament (ACL) injury and anterior tibial translation (ATT). In the present study, we aimed to establish native medial and lateral PTS values for adult Saudis and to identify any association between PTS and gender, age, and body mass index (BMI). Materials and methods A total of 285 consecutive, normal, magnetic resonance imaging (MRI) studies of the knee were included in the study. The PTS was measured using the proximal anatomical axis of the tibia. The Kruskal-Wallis test was used to compare the medial and lateral PTS angles between age groups. The difference between the medial and lateral posterior tibial slopes was assessed using the Wilcoxon signed-rank test. The Mann-Whitney U test was performed to compare the medial and lateral PTS angles between men and women. Age, gender, and BMI were analyzed by multivariate linear regression to determine whether they positively predict the medial and lateral PTS angles. Results The mean physiological medial PTS was 5.86 ± 3.0° and 6.61 ± 3.32°, and the lateral PTS was 4.41 ± 3.35° and 4.63 ± 2.85° in men and women, respectively. This difference showed no statistically significant gender dimorphism (p > 0.05). The medial PTS was significantly larger than the lateral PTS (p < 0.0001). There was no statistically significant difference in the medial and lateral PTS angles between age groups (p > 0.05). Higher BMI was significantly associated with a steeper medial PTS (p = 0.001). Conclusions This study provided native values for medial and lateral PTS angles in Saudis, which can assist surgeons in maintaining normal knee PTS during surgery. The PTS was not influenced by age. The medial PTS was significantly larger than the lateral PTS in men and women. The PTS showed no significant gender dimorphism. BMI was significantly associated with the medial PTS.


2016 ◽  
Vol 68 (4) ◽  
pp. 511-516 ◽  
Author(s):  
Amy Hung ◽  
Eric C. Sayre ◽  
Ali Guermazi ◽  
John M. Esdaile ◽  
Jacek A. Kopec ◽  
...  

2020 ◽  
Vol 33 (5) ◽  
pp. 400-409
Author(s):  
Uli Fehrenbach ◽  
Anas Jadan ◽  
Timo A Auer ◽  
Katharina Kreutz ◽  
Dominik Geisel ◽  
...  

Purpose Obesity has become a major health problem and is associated with endocrine disorders and a disturbed hypothalamic-pituitary axis. The purpose of this study was to correlate pituitary gland volume determined by routine magnetic resonance imaging with patient characteristics, in particular body mass index and obesity. Material and methods A total of 144 ‘healthy’ patients with normal findings in cerebral magnetic resonance imaging were retrospectively included. Pituitary gland volume was measured in postcontrast three-dimensional T1-weighted sequences. A polygonal three-dimensional region of interest covering the whole pituitary gland was assessed manually. Physical characteristics (gender, age, body height and body mass index) were correlated with pituitary gland volume. Multiple subgroup and regression analyses were performed. Results Pituitary gland volumes were significantly larger in females than in males ( p<0.001) and young individuals (<35 years) versus middle-aged patients (35–47 years) ( p=0.042). Obese patients (body mass index ≥30) had significantly larger pituitary gland volumes than overweight (25<body mass index<30; p=0.011) and normal-weight (body mass index <25; p=0.005) patients. In males, pituitary gland volumes of body mass index subgroups showed significant differences ( p=0.038). Obese males had larger pituitary gland volumes than overweight patients ( p=0.066) and significantly larger volumes than normal-weight ( p=0.023) patients. Obese females also had larger pituitary gland volumes but without statistical significance ( p>0.05). Regression analysis showed that increased pituitary gland volume is associated with higher body mass index independent from gender, age and body height. Conclusion Pituitary gland volume is increased in obese individuals and a high body mass index can be seen as an independent predictor of increased pituitary gland volume. Therefore, gland enlargement might be an imaging indicator of dysfunction in the hypothalamus-pituitary axis. Besides gender and age, body mass index should be considered by radiologists when diagnosing abnormal changes in pituitary gland volume.


Bone ◽  
2017 ◽  
Vol 99 ◽  
pp. 47-52 ◽  
Author(s):  
Jean-François Budzik ◽  
Guillaume Lefebvre ◽  
Hélène Behal ◽  
Sébastien Verclytte ◽  
Pierre Hardouin ◽  
...  

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