Anatomical locations

解剖位置
  • 文章类型: Journal Article
    孤立性纤维瘤(SFT)是源于各种解剖部位的成纤维细胞/肌纤维母细胞起源的不常见的间充质肿瘤。大多数SFT无症状,并通过各种成像方式偶然发现。尽管SFT最初是在胸膜中发现的,并被错误地认为仅来自浆膜层,据报道,胸膜外SFT比胸膜外SFT更常见。不同解剖部位的影像学特征相似,主要与肿瘤大小和胶原含量有关,在磁共振成像(MRI)上特征性地显示低信号强度。较小的肿瘤通常表现出均匀的增强,然而随着肿瘤大小的增加,坏死区域可能变得明显,导致异构增强。少于30%的SFT表现出不利的临床结果,无论其组织学特征如何。保证手术作为长期随访的首选治疗方法。在这篇文章中,我们回顾了SFT的临床表现和影像学特征,讨论了基于解剖部位的鉴别诊断,并提供诊断珍珠。
    Solitary Fibrous Tumors (SFTs) are uncommon mesenchymal tumors of fibroblastic/myofibroblastic origin that stem from various anatomical sites. Most SFTs are asymptomatic and noticed incidentally by various imaging modalities. Although SFTs were initially identified in the pleura and erroneously considered to originate solely from serosal layers, extrapleural SFTs have been reported more commonly than their pleural counterparts. Imaging features are similar in different anatomical locations and are mainly related to the tumor\'s size and collagen content, characteristically displaying low signal intensity on Magnetic Resonance Imaging (MRI). Smaller tumors typically exhibit uniform enhancement, yet necrotic regions may become evident as the tumor size increases, resulting in heterogeneous enhancement. Less than 30% of SFTs demonstrate unfavorable clinical outcomes regardless of their histological features, warranting surgery as the preferred treatment with long-term follow-up. In this article, we have reviewed the clinical manifestations and imaging features of SFTs, discussed their differential diagnosis based on anatomical site, and provided diagnostic pearls.
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  • 文章类型: Journal Article
    子宫肌瘤的位置和大小,对妇女特别是孕妇的生活质量和活产率有显著影响。
    确定子宫肌瘤的解剖位置和大小,并评估与年龄组的任何可能关联。
    这项回顾性研究回顾了2019年1月至2021年12月超声诊断为子宫肌瘤的3,542例患者的位置和大小。使用GNUPSPP分析获得的数据,和Python在JupyterNotebook上,统计显著性水平设置为p≤0.05。
    子宫肌瘤的总体平均直径为5.50±2.60cm(95CI=5.41-5.58,范围=1.00cm-19.10cm),壁内平均直径为5.50±2.60cm,浆膜下和粘膜下肌瘤为5.53±2.60cm(95CI=5.44-5.62),5.50±2.27cm(95CI=5.27~5.74)和5.82±2.77cm(95CI=5.49~6.14)。大部分肌瘤结节小(48.36%,n=1713),只有5.84%(n=207)大(>10cm)。胃底后肌瘤和下前肌瘤主要见于35-44岁年龄段。
    大多数子宫肌瘤位于壁内,且大部分位于子宫前壁。粘膜下肌瘤,即使是最稀有的,平均大于其他类型的子宫肌瘤。子宫肌瘤直径随年龄增长而增大。
    UNASSIGNED: Uterine fibroids locations and sizes, have significant influences on the quality of life of women especially pregnant women and on live birth rate.
    UNASSIGNED: To determine the anatomical locations and sizes of uterine fibroids and assess any possible associations with age groups.
    UNASSIGNED: This retrospective study reviewed the locations and sizes of a total of 3,542 patients who were ultrasonographically diagnosed with uterine fibroids from January 2019 to December 2021. The obtained data were analysed using GNU PSPP, and Python on Jupyter Notebook with statistical significance level set at p≤0.05.
    UNASSIGNED: The overall average diameter of uterine myoma was 5.50±2.60cm (95%CI=5.41-5.58, range=1.00cm-19.10cm) and the respective mean diameter of intramural, subserosal and submucosal fibroids were 5.53±2.60cm (95%CI=5.44-5.62), 5.50±2.27cm (95%CI=5.27-5.74) and 5.82±2.77cm (95%CI=5.49-6.14). Most of the fibroid nodules were small (48.36%, n=1713) and only 5.84% (n=207) were large (>10cm). Posterofundal fibroids and lower anterior myomas were mostly seen in the 35-44 years age class.
    UNASSIGNED: The majority of the uterine fibroids were intramural and were mostly at the anterior uterine wall. The submucosal fibroids, even though the rarest, were averagely larger than the other types of uterine myomas. The diameter of uterine fibroids increased with age.
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  • 文章类型: Case Reports
    本研究论文的主要目的是报告罕见的颅底脑膜瘤病例,以说明诊断的复杂性,治疗,和术后护理。通过描述这些罕见的病例,我们希望提高对临床体征的认识,困难,以及颅底脑膜瘤在具有挑战性的解剖学环境中的预后。在后颅窝,我们的调查揭示了颅底脑膜瘤的一个独特的例子,涉及许多颅神经和复杂的脉管系统。患者的临床表现中存在各种视觉异常,突出显示这些肿瘤可能导致的各种症状,这取决于它们的精确位置。这些病例突出了术前成像的重要性,包括高分辨率MRI和血管造影,以及这些肿瘤的诊断困难。通过报告这些情况,我们的研究增加了有关颅底脑膜瘤的知识,并提供了有关其治疗细微差别的有见地的信息。我们的发现强调了个性化治疗计划的重要性,跨学科合作,以及继续研究以更好地理解这些复杂的肿瘤的需求。这些研究对于提高我们对这些神秘肿瘤的认识至关重要,指导临床判断,并最终改善患者的预后。这些发现很重要,因为它们可以填补信息空白,改善治疗计划,并鼓励更多的神经肿瘤学研究。
    这项研究提出了一系列三个罕见的颅底脑膜瘤病例,强调诊断的复杂性,治疗,和术后护理。患者的临床表现和影像学突出了与这些肿瘤相关的各种症状和挑战,在复杂的解剖位置发现。这些病例强调了术前高分辨率成像和血管造影在诊断准确性中的关键作用。手术干预,在多学科方法的指导下,在管理这些苛刻的案件方面至关重要。组织病理学检查证实非典型脑膜瘤。术后阶段包括细致的护理,以确保最佳的恢复和功能结果。我们的发现有助于理解颅底脑膜瘤,强调需要个性化的治疗计划和正在进行的研究,以改善患者在神经肿瘤学的结果。
    This study paper\'s main goal is to report rare cases of skull base meningiomas that exemplify the complexities of diagnosis, therapy, and postoperative care. By describing these rare cases, we hope to advance knowledge of the clinical signs, difficulties, and prognoses of skull base meningiomas in a challenging anatomical setting. In the posterior cranial fossa, our investigation reveals a unique example of skull base meningioma that involved numerous cranial nerves and complex vasculature. A variety of visual abnormalities were present in the patient\'s clinical presentations, highlighting the wide range of symptoms that these tumors might cause depending on their precise positions. These cases highlight the critical importance of preoperative imaging, including high-resolution MRI and angiography, as well as the diagnostic difficulties these tumors pertain. By reporting these instances, our research adds to the body of knowledge about skull base meningiomas and offers insightful information about the nuances of their therapies. Our findings highlight the importance of individualized treatment plans, interdisciplinary cooperation, and the demand for continued study to better comprehend these convoluted tumors. Such studies are essential for advancing our knowledge of these enigmatic tumors, guiding clinical judgment, and eventually improving patient outcomes. These findings are important because they can fill information gaps, improve treatment plans, and encourage additional research in neuro-oncology.
    UNASSIGNED: This study presents a series of three rare cases of skull base meningiomas, emphasizing the complexities in diagnosis, treatment, and postoperative care. The patients\' clinical presentations and imaging highlighted the diverse symptoms and challenges associated with these tumors, found in intricate anatomical locations. The cases underscore the crucial role of preoperative high-resolution imaging and angiography in diagnostic accuracy. Surgical intervention, guided by a multidisciplinary approach, is pivotal in managing these demanding cases. Histopathological examinations confirmed atypical meningiomas. The postoperative phases involved meticulous care to ensure optimal recovery and functional outcomes. Our findings contribute to the understanding of skull base meningiomas, emphasizing the need for personalized treatment plans and ongoing research to improve patient outcomes in neuro-oncology.
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  • 文章类型: Journal Article
    脂肪组织来源的基质细胞(ADSC)在兽医学领域引起了极大的兴趣,特别是它们在专注于骨再生的治疗策略中的潜力。这些细胞具有独特的生物学特性,包括它们的再生能力和产生生物活性分子的能力。然而,重要的是要认识到ADSCs的特征可以根据动物物种和它们的来源而变化,例如皮下和内脏区域(SCAT和VAT,分别)。因此,本工作旨在全面回顾从伴侣动物的不同解剖部位分离的ADSCs的不同特性,即,狗,猫,和马,就免疫表型而言,形态学,扩散,和成骨分化潜能。研究结果表明,免疫表型,扩散,ADSCs的成骨潜能因组织来源和物种而异。一般来说,VAT衍生的ADSCs在狗和马的增殖率较高,而在猫中,从SCAT和VAT区分离的两种细胞的增殖率似乎相似。在成骨分化潜能方面,增值税衍生的ADSC在猫中表现出最高的能力,而SCAT衍生的ADSC在马匹中表现出优越的潜能。有趣的是,在狗中,VAT衍生的细胞似乎比从SCAT分离的细胞具有更大的潜力。在增值税中,镰状韧带和网膜来源的ADSCs显示成骨潜能增加,与从其他解剖位置分离的细胞相比。因此,考虑到这些差异,优化隔离协议变得至关重要,根据特定的目标物种和治疗目的定制它们,并明智地选择解剖部位进行ADSC隔离。这种方法有望增强基于ADSC的骨再生疗法的功效。
    Adipose tissue-derived stromal cells (ADSCs) have generated considerable interest in the field of veterinary medicine, particularly for their potential in therapeutic strategies focused on bone regeneration. These cells possess unique biological characteristics, including their regenerative capacity and their ability to produce bioactive molecules. However, it is crucial to recognize that the characteristics of ADSCs can vary depending on the animal species and the site from which they are derived, such as the subcutaneous and visceral regions (SCAT and VAT, respectively). Thus, the present work aimed to comprehensively review the different traits of ADSCs isolated from diverse anatomical sites in companion animals, i.e., dogs, cats, and horses, in terms of immunophenotype, morphology, proliferation, and osteogenic differentiation potential. The findings indicate that the immunophenotype, proliferation, and osteogenic potential of ADSCs differ according to tissue origin and species. Generally, the proliferation rate is higher in VAT-derived ADSCs in dogs and horses, whereas in cats, the proliferation rate appears to be similar in both cells isolated from SCAT and VAT regions. In terms of osteogenic differentiation potential, VAT-derived ADSCs demonstrate the highest capability in cats, whereas SCAT-derived ADSCs exhibit superior potential in horses. Interestingly, in dogs, VAT-derived cells appear to have greater potential than those isolated from SCAT. Within the VAT, ADSCs derived from the falciform ligament and omentum show increased osteogenic potential, compared to cells isolated from other anatomical locations. Consequently, considering these disparities, optimizing isolation protocols becomes pivotal, tailoring them to the specific target species and therapeutic aims, and judiciously selecting the anatomical site for ADSC isolation. This approach holds promise to enhance the efficacy of ADSCs-based bone regenerative therapies.
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  • 文章类型: Journal Article
    目的:本研究旨在调查发病率,预测因子,以及下消化道出血(LGIB)对结直肠癌患者住院死亡率的影响,由于其临床意义和对患者预后的潜在影响。
    方法:我们对2009年至2019年国家住院患者样本数据库的数据进行了回顾性分析,包括2,598,326例有和没有LGIB的结直肠癌患者。进行单变量和多变量逻辑回归分析以确定LGIB的预测因子及其与住院患者预后的关联。
    结果:在直肠癌患者中观察到LGIB的最高发生率(3.8%),其次是远端结肠癌患者(1.4%)和近端结肠癌患者(1.2%).几个因素与LGIB显著相关,包括年龄较大;男性;某些种族,如黑人,西班牙裔,和亚洲/太平洋岛民患者;或较低的社会经济地位。多变量分析确定了LGIB的独立预测因子,比如严重的败血症,使用抗凝剂,长期使用阿司匹林或抗血小板药物,姑息治疗,营养不良,恶病质,化疗或免疫疗法,转移,酗酒,高血压,肥胖,消化道肿瘤家族史.在有和没有LGIB的患者之间没有观察到住院死亡率的显着差异。
    结论:我们的研究强调了在LGIB评估中考虑结直肠癌位置和确定危险因素的重要性。临床医生应该解决可改变的风险因素和医疗保健差距。未来的研究应该探索潜在的机制,有针对性的干预措施,以及超出住院患者死亡率的长期结果。
    OBJECTIVE: This study aimed to investigate the incidence, predictors, and impact of lower gastrointestinal bleeding (LGIB) on inpatient mortality among colorectal cancer patients, due to its clinical significance and potential influence on patient outcomes.
    METHODS: We conducted a retrospective analysis of data from the National Inpatient Sample database between 2009 and 2019, including 2,598,326 colorectal cancer patients with and without LGIB. Univariate and multivariate logistic regression analyses were performed to determine predictors of LGIB and its association with inpatient outcomes.
    RESULTS: The highest incidence of LGIB was observed in rectal cancer patients (3.8%), followed by distal colon cancer patients (1.4%) and proximal colon cancer patients (1.2%). Several factors were significantly associated with LGIB, including older age; male sex; certain racial such as Black, Hispanic, and Asia/Pacific Islander patients; or lower socioeconomic status. Multivariate analysis identified independent predictors of LGIB, such as severe sepsis, use of anticoagulants, long-term use of aspirin or antiplatelet drugs, palliative care, malnutrition, cachexia, chemotherapy or immunotherapy, metastasis, alcohol abuse, hypertension, obesity, and family history of digestive cancer. No significant difference in inpatient mortality was observed between patients with and without LGIB.
    CONCLUSIONS: Our study underscores the importance of considering colorectal cancer location and identified risk factors for LGIB assessment. Clinicians should address modifiable risk factors and healthcare disparities. Future research should explore underlying mechanisms, targeted interventions, and long-term outcomes beyond inpatient mortality.
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  • 文章类型: Journal Article
    背景技术附件通路(AP)是能够在心房和心室之间快速传导的肌肉束。它们可以位于沿房室沟或隔膜的任何位置。这种途径的病因通常是未知的。本研究旨在评估性别之间的相关性,AP位置,和临床表现。方法回顾性分析2010年至2016年间139例接受射频消融治疗的新诊断辅助途径患者。从病历中提取的信息包括:诊断时的年龄,性别,特点,和辅助路径的解剖位置。结果共纳入139例AP患者。诊断平均年龄为32.2±13.5岁。关于性别,AP在男性中更常见(p值0.04)。男性在右侧和左侧AP组中占主导地位(p值0.025),虽然,总的来说,大多数AP被保留。此外,男性更常被诊断为右房间隔后(RPS)辅助途径,而女性更常被诊断为左外侧(LL)途径。关于临床表现,明显的形式比隐藏的形式更频繁。男性在两组中普遍存在(p值0.38)。结论性别成分可能在AP形成的发病机制中起作用。
    Background Accessory pathways (APs) are muscular bundles capable of rapid conduction between atria and ventricles. They can be located anywhere along the atrioventricular groove or septum. The etiology of such pathways is generally unknown. This study aims to evaluate the correlation between gender, AP location, and clinical presentation. Methods This is a retrospective study of 139 patients who underwent radiofrequency ablations for newly diagnosed accessory pathways between years 2010 and 2016. Information extracted from the medical records included: age at the time of diagnosis, gender, characteristics, and anatomical location of the accessory pathways. Results A total of 139 patients with AP were enrolled in the study. The mean age of diagnosis was 32.2 ± 13.5 years. With regards to gender, APs were more common among men (p-value 0.04). Males were predominant in both the right and left AP groups (p-value 0.025), although, overall, most of the AP were left located. Also, males were more commonly diagnosed with right posteroseptal (RPS) accessory pathways while females with left lateral (LL) pathways. Concerning the clinical presentation, the manifest form was more frequent than concealed. Males were prevalent in both groups (p-value 0.38). Conclusion Gender components might have a role in the pathogenesis of AP formation.
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  • 文章类型: Journal Article
    Introduction Stroke events are leading causes of mortalities globally and currently increasing alarmingly in low- and middle-income nations including Ghana, thus overburdening national healthcare delivery sectors. This trend is predicted to ultimately have an impact on the socio-economic development of these countries, thus gaining the attention of policy-makers and implementers. This study was therefore conducted to evaluate the anatomical locations of stroke events from CT scan examinations and the possibly associated variables to assist in managing this non-communicable pandemic. Methods All computed tomography (CT) scans performed for stroke events at the Cape Coast Teaching Hospital from June 2016 to June 2020 were retrieved and reviewed for this study. The socio-demographics and the presence of hypertensive risk factor were also retrieved. Data were then collated, grouped, coded, inputted, and used for analysis. Chi-square test of independence was employed for assessing possible associations, and logistic regression analysis was performed to predict the anatomical locations of stroke events using sex and hypertension. Statistical significance level was specified at p ≤ 0.05. Results A total of 1,750 stroke cases were recorded during the study period, comprising 1,237 (70.7%) ischemic strokes and 513 (29.3%) hemorrhagic strokes. Majority (54.3%) of the patients were males. The average age of participants was 62.46±14.74 years. Basal ganglia (43.0%), parietal lobe (26.7%), and frontal lobe (6.9%) were the commonest anatomical locations. The elderly (≥ 60 years) were significantly affected at the basal ganglia (p=0.006), parietal lobe (p=0.005), frontal lobe (p=0.013), temporal lobe (p=0.048), and cerebellum (p=0.049). Basal ganglia lesions were significantly recorded in men, whereas lesions located at the pons were significantly seen in females. The regression model revealed that the risk of stroke at the pons increased by 2.155-folds in males (p=0.043; 95% CI=1.026-4.528). Generally, gender and hypertension were not significant predictors of stroke lesion locations. Conclusions The basal ganglia area, which falls under the middle cerebral artery territory, was the commonest anatomical location for stroke events in our setting. Knowing the anatomical locations of these stroke events has an impact on the type of interventions needed, especially at the early stages of these stroke events. CT perfusion, CT angiography, and magnetic resonance imaging (MRI) with MR angiography (MRA) when available can further assist in determining the exact cause so that urgent interventions such as endovascular treatments can be offered.
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  • 文章类型: Journal Article
    We present a labeled large-scale, high resolution chest x-ray dataset for the automated exploration of medical images along with their associated reports. This dataset includes more than 160,000 images obtained from 67,000 patients that were interpreted and reported by radiologists at San Juan Hospital (Spain) from 2009 to 2017, covering six different position views and additional information on image acquisition and patient demography. The reports were labeled with 174 different radiographic findings, 19 differential diagnoses and 104 anatomic locations organized as a hierarchical taxonomy and mapped onto standard Unified Medical Language System (UMLS) terminology. Of these reports, 27% were manually annotated by trained physicians and the remaining set was labeled using a supervised method based on a recurrent neural network with attention mechanisms. The labels generated were then validated in an independent test set achieving a 0.93 Micro-F1 score. To the best of our knowledge, this is one of the largest public chest x-ray databases suitable for training supervised models concerning radiographs, and the first to contain radiographic reports in Spanish. The PadChest dataset can be downloaded from http://bimcv.cipf.es/bimcv-projects/padchest/.
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  • 文章类型: Journal Article
    A neck scar contracture can severely and negatively affect the function of mastication, phonic, or breathing and result in neck pain and issues with esthetics. The best way is of course to avoid such contracture by means of non-surgical treatment such as use of a growth factor. The basic fibroblastic growth factor is clinically well proven in decreasing scar formation and improving healing. There are numerous reconstructive methods for neck contracture, especially when the lesions are relatively limited in part of the neck. However, a very severe and full circumferential scar contracture requires extensive reconstruction. The thin groin flap is one of the answers and well matches with the tissue texture and maintains the flexibility. Even with extensive burns and delayed reconstructions due to resuscitation first, the groin area is well preserved and can be safely harvested by dual vasculature systems of the superficial circumflex iliac artery and superficial epigastric artery, which warrant more reliability compared to the perforator flaps in this area. More demanding and stringent forms of the neck burn scar contracture are the sequelae of radiation. A radiation burn or radiation injury can be progressing and hard to heal. Adipose-derived stem cells can reverse the scar contracture as the surrounding tissue is softened and can accelerate wound healing. In this review, different types of neck burn scar contracture and reconstructive methods are summarized, including innovative use of bFGF and ADSCs in the management of difficult wound healing and scar contracture.
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  • 文章类型: Journal Article
    The skin tissue has been shown to behave like a nonlinear anisotropic material. This study was aimed to employ a constitutive fiber family equation to characterize the nonlinear anisotropic mechanical behavior of the rat and mice skin tissues in different anatomical locations, including the abdomen and back, using histostructural and uniaxial data. The rat and mice skin tissues were excised from the animals\' body and then the histological analyses were performed on each skin type to determine the mean fiber orientation angle. Afterward, the preconditioned skin tissues were subjected to a series of quasi-static axial and circumferential loads until the incidence of failure. The crucial role of fiber orientation was explicitly added into a proposed strain energy density function. The material coefficients were determined using the constrained nonlinear optimization method based on the axial and circumferential extension data of the rat and mice samples at different anatomical locations. The material coefficients of the skins were given with R(2) ≥ 0.998. The results revealed a significant load-bearing capacity and stiffness of the rat abdomen compared to the rat back tissues. In addition, the mice abdomen showed a higher stiffness in the axial direction in comparison with circumferential one, while the mice back displayed its highest stiffness in the circumferential direction. The material coefficients of the rat and mice skin tissues were determined and well compared to the experimental data. The optimized fiber angles were also compared to the experimental histological data, and in all cases less than 11.85% differences were observed in both the skin tissues.
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