Omarespinoza2714
IgG4-related pseudotumours (IgG4-RPT) represent a distinctive manifestation in the broad spectrum of IgG4-related diseases (IgG4-RD). Due to their wide morphology and rarity, IgG4-RPTs represent a diagnostic challenge in the differential between reactive lesions and a fibrous soft tissue tumours. Thus, our aim was to characterise our cases and review the literature, focusing on the macroscopic and microscopic features of the lesions. In this paper, we summarise the possible presentations and histomorphological features of IgG4-RPT based on data collected from the literature and from cases at our institute and provide an overview of the pathogenesis and histological characteristics based on the knowledge accumulated in recent years. We collected surgical cases with a diagnosis of IgG4-RPT over the period 2013-2020 at two centres and analysed their macroscopic, histological, and immunohistochemical profiles. Furthermore, we performed a literature research in the MEDLINE and EBSCO databases regarding case reports and studies with the explicit diagnosis of IgG4-RPT. Our cases consist of nine men and three women, with an average age of 60±14 years, representing about 0.05% of the lesions evaluated at the two departments. The involved sites include the kidney, lung, gallbladder, pterygopalatine fossa, spleen, tongue, mediastinum, and submandibular gland. Grossly, nine lesions showed sharp margins. On histological examination, all the lesions showed an abundant inflammatory infiltrate with lymphocytes and IgG4-positive plasma cells as well as characteristic fibroblastic storiform proliferation. The literature search revealed 266 cases and similar histomorphological features in 23 locations. In 30 of these cases (11%), IgG4-RPTs were multifocal. IgG4-RPT are exceedingly rare lesions, which makes them challenging to diagnose. They can affect different sites, and the histomorphological presentation may differ.
Although 3-dimensional (3D)-printed resin prostheses are widely used, studies on the effects of the manufacturing parameters of 3D printing on the color stability and stainability of these prostheses are lacking.
The purpose of this invitro study was to investigate the effects of layer thickness and printing orientation on the color stability and stainability of a 3D-printed resin. In addition, the influence of roughness and water contact angle was evaluated.
Color changes (ΔE
) in tooth-colored resin specimens produced by 3D printing with 2 different layer thicknesses and 3 different printing orientations and immersed in 3 types of aging media (distilled water, coffee solution, and wine) were evaluated (n=10). The CIELab color values were measured with a spectrophotometer at baseline and different time points (1, 3, 7, 15, and 30 days). The surface roughness (Ra) of resin specimens was measured at various time points (baseline, 7, 15, and 30 days) by confocal laser scanning microscopy after immersion fee solution, the values decreased after 15 days (P<.001); in red wine, the values demonstrated a continuous increase up to 30 days in all groups (P<.001). The 3-way repeated measures ANOVA showed that the Ra values did not change significantly with immersion time (P=.444). The 2-way ANOVA showed that the water contact angle was not significantly affected by layer thickness (P=.921) or printing orientation (P=.062).
Layer thickness and printing orientation affected the color stability and stainability of the 3D-printed resin. The discoloration of the 3D-printed resin differed with time, depending on the type of aging media used.
Layer thickness and printing orientation affected the color stability and stainability of the 3D-printed resin. The discoloration of the 3D-printed resin differed with time, depending on the type of aging media used.
Three-dimensional (3D) printing technology may improve the fit of partial removable dental prosthesis frameworks made by selective laser melting. Conventionally, the gaps between definitive casts and prostheses are evaluated by using clinical replicas, but digital evaluations may provide a better alternative.
The purpose of this invitro study was to compare digital and conventional methods for evaluating the fit of partial removable dental prosthesis frameworks made by selective laser melting.
A printed resin definitive cast representing a Kennedy class II modification 2 design with 5 reference markers was made from a dentiform cast. Twelve cobalt-chromium partial removable dental prosthesis frameworks were fabricated by selective laser melting on this definitive cast with a digital design software program. The gaps between the frameworks and the cast were assessed by using the clinical replica method with a silicone impression material and measuring the thickness at each marker with calipers. Digital c registration methods.
Both registration methods determined whether the fit of a framework fabricated by selective laser melting was within a clinically acceptable standard. The differences in the values produced most likely arose from the different registration methods.Minimally invasive repair of pectus excavatum or the Nuss procedure has become the standard operation for pectus excavatum repair. Pectus excavatum can be broadly divided into two categories symmetric or asymmetric morphology. To optimize surgical outcomes of asymmetric pectus excavatum repair, previous work has proposed morphology-tailored bar shaping technique; the bar to be inserted is shaped asymmetrically to counter-balance the outer contour of the chest prior to the passage of the introducer across the chest. We describe an alternate approach that emphasizes precise introducer chest insertion and extraction and that highlights the direction of the introducer passage is from the higher asymmetric side to the lower contralateral side. The shape of the bar is determined after the introducer has been placed into the chest. This technique allows simultaneous compression of the higher asymmetric chest and elevation of the contralateral depressed side by the metal bar achieving excellent symmetric chest appearance. LEVEL OF EVIDENCE Level V, Operative Technique.
Intramural hematoma may be generated by a minimalintimal tear. Most surgeries for acute type A intramural hematoma are performed on the proximal aorta alone regardless of the intimal tear site. Under the assumption that major adverse aortic events (MAAEs) would be related to the location of primary intimal tear, we reviewed preoperative computed tomography scan findings.
Sixty patients with acute type A intramural hematoma who underwent surgery from January 2008 to December 2019 were retrospectively analyzed. The maximal diameter, maximal thickness of the intramural hematoma, and hematoma thickness ratio of the ascending and descending aortae were measured. MAAEs were defined as newly developed aortic dissection, rupture, newly developed penetrating aortic ulcer (PAU), enlargement of the PAU, and aortic death.
The number of patients with PAU in the descending aorta (dPAU) was significantly higher in the MAAE (+) group. The MAAE (+) group showed lower measurements of the ascending aorta and higher measurable acute type A intramural hematoma that do not meet the existing guidelines should be tailored to the location of the intimal tear.
In France, care workers and health students have been intensely mobilized during the first wave of the COVID-19 pandemic. But few studies have evaluated psychological distress on non-medical health students, in addition to the challenges posed by pedagogical continuity while universities are closed following health and safety regulations.
This study aims to assess COVID-19's impact on health students in France on different levels psychological, educational and social.
An online national cross-sectional study, from April 11 to May 30 2020, included sociodemographic, work conditions and numeric scales.
A total of 4411 students answered. Regarding the K6 scale, 39% of students had moderate distress, and 21% had a high level of distress. Risk factors of psychological distress included being a woman (P<0.001), being between 19 and 21 years old (P<0.001), living alone (P=0.008), and not having the ability to isolate (P<0.001). Students on the frontline had less psychological distress (57 vs 62%, P=0.003), better quality of sleep (34% vs 28% high quality, P<0.001) but a higher consumption of medical (8.5% vs 6.5%, P=0.044) and non-medical (18% vs 10%, P<0.001) psychotropic drugs. Nurse and medical students had more distress and used more non-medical psychotropic substances than other health students (15% vs 9.2%).
COVID-19' crisis had an important impact on health students' mental health, social life and training with discrepancies regarding the speciality whether they were on the frontline or not. There is an urgent need for psychological and pedagogical support for students, and even more so regarding the prolongation of the COVID-19 epidemic.
COVID-19' crisis had an important impact on health students' mental health, social life and training with discrepancies regarding the speciality whether they were on the frontline or not. There is an urgent need for psychological and pedagogical support for students, and even more so regarding the prolongation of the COVID-19 epidemic.
We aimed to contribute to the current limited literature addressing quetiapine-associated thrombocytopenia. We report the case of a young man with a first episode schizophrenia who experienced thrombocytopenic purpura following the administration of quetiapine co-prescribed with valproic acid.
HA is a 19-year-old single man who had no history of systemic or hematologic diseases and no personal psychiatric history. He presented with psychotic symptoms that have been continuously evolving since ten months. His psychiatrist put him on treatment with 400 mg/day of quetiapine and 1500 mg/day of valproic acid over a three-week titration. Twelve days later, the patient developed a sudden onset of thrombocytopenic purpura without fever, which resolved over two weeks after cessation of both drugs.
Although uncommon and reversible, thrombocytopenia induced by quetiapine can be life-threatening. Clinicians should carefully follow-up the hematological data when prescribing quetiapine. The unnecessary use of valproic acid should be avoided as a first-line treatment for young people with first-episode schizophrenia.
Although uncommon and reversible, thrombocytopenia induced by quetiapine can be life-threatening. Clinicians should carefully follow-up the hematological data when prescribing quetiapine. The unnecessary use of valproic acid should be avoided as a first-line treatment for young people with first-episode schizophrenia.
Currently, cognitive behavior therapy (CBT) targets multiple cognitive processes. However, only a few studies have focused on the interaction among these processes. Preliminary studies have identified a moderation effect of rumination on the link between thought content and emotional difficulties, and a mediation effect of ruminations on the link between mindfulness and emotional difficulties.
We recruited 236 participants (185 women) who consented online to participate by choosing to either continue with the study or decline to proceed. They completed a battery of questionnaires online, namely Positivity scale, General Health Questionnaire, Rumination Response Scale, Five Facet Mindfulness Questionnaire and Cognitive Fusion Questionnaire.
All cognitive processes were significantly correlated with emotional distress. Step-by-step linear regression analysis revealed that positivity, cognitive fusion and brooding were significant independent predictors of emotional difficulties. selleck inhibitor Bootstrapping analysis confirmed that cognitive fusion and brooding mediate the link between mindfulness and depression and anxiety-insomnia.
