13,153 results match your criteria segment proximal


Evaluation of computer-aided design software methods for assessment of the three-dimensional geometry of the canine radius.

Am J Vet Res 2021 Jun;82(6):435-448

Objective: To describe methods to measure the 3-D orientation of the proximal, diaphyseal, and distal segments of the canine radius by use of computer-aided design software (CADS) and to compare the repeatability and reliability of measurements derived by those methods.

Sample: 31 canine radii with biapical deformities and 24 clinically normal (control) canine radii.

Procedures: Select CT scans of radii were imported into a CADS program. Read More

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[Intramedullary nailing through suprapatellar approach with semiextended position for the treatment of tibial fractures].

Zhongguo Gu Shang 2021 May;34(5):452-7

The Second Department of Orthopaedics, the First People's Hospitalof Xiaoshan, Hangzhou 311201, Zhejiang, China.

Objective: To explore clinical effects of intramedullary nailing through suprapatellar approach with semiextended position in treating tibial fractures.

Methods: From January 2018 to June 2019, 23 patients with tibia fractures were treated with suprapatellar approach intramedullary nailing on knee semiextended position, including 18 males and 5 females, aged from 26 to 67 years old with an average age of (38.5±9. Read More

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Right ureteric reconstruction with vascularised interpositional appendix graft in retroperitoneal leiomyosarcoma.

Med J Malaysia 2021 May;76(3):432-435

Sarawak General Hospital, Department of Surgery, Sarawak, Malaysia.

We present here a case of a 66-year-old lady who was diagnosed with right iliac fossa retroperitoneal leiomyosarcoma at Hospital Umum Sarawak. The challenge in this case was the extension of tumour with the involvement of her right ureter causing proximal hydroureter and hydronephrosis. After resection of tumour en-block with the involved segment of ureter, it was not possible to repair the ureteric defect directly. Read More

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Case 294.

Radiology 2021 Jun;299(3):727-729

From the Departments of Radiology (M.G., M.B., M.P.R.) and Internal Medicine (N.C.C.), Cochin Hospital, APHP Centre, 27 Rue du Fg St Jacques, Paris 75014, France; and Université de Paris, Paris, France (M.B., N.C.C., M.P.R.).

History A 50-year-old woman presented to the emergency department of our hospital with a 2-day history of lower limb pain associated with unusual asthenia and diffuse arthralgia over the past 3 weeks. She was a native of Guinea and had lived in France for most of her life, working as a personal care assistant. Her only medical history of note was an occurrence of fetal death at 12 weeks gestation when she was 35 years old. Read More

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Bowel intussusception in adult: Prevalence, diagnostic tools and therapy.

World J Methodol 2021 May 20;11(3):81-87. Epub 2021 May 20.

Interventional Radiology Unit, "F. Miulli" General Regional Hospital, Acquaviva delle Fonti 70021, Bari, Italy.

Intussusception is defined as invagination of one segment of the bowel into an immediately adjacent segment. The intussusception refers to the proximal segment that invaginates into the distal segment, or the intussusception (recipient segment). Intussusception, more common occur in the small bowel and rarely involve only the large bowel. Read More

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Comparison of electrodiagnosis, neurosonography and MR neurography in localization of ulnar neuropathy at the elbow.

J Neuroradiol 2021 May 21. Epub 2021 May 21.

Department of Neurology, University Hospital Zurich and University of Zurich, Zurich, Switzerland.

Introduction: In patients with ulnar neuropathy at the elbow (UNE) the precise determination of the site of lesion is important for subsequent differential diagnostic considerations and therapeutic management. Due to a paucity of comparable data, to better define the role of different diagnostic tests, we performed the first prospective study comparing the diagnostic accuracy of short segment nerve stimulation, nerve ultrasonography, MR neurography (MRN), and diffusion tensor imaging (DTI) in patients with UNE.

Methods: UNE was clinically diagnosed in 17 patients with 18 affected elbows. Read More

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Electrocardiographic criteria for anterior STEMI - Does the cut-off point affect treatment delay?

J Electrocardiol 2021 May 12;67:39-44. Epub 2021 May 12.

2(nd) Department of Cardiology, Poznan University of Medical Sciences, 28 Czerwca 1956r No 194, Poznan 61-485, Poland.

Background: Diagnostic criteria for anterior STEMI differ between the European Society of Cardiology (ESC) and the European Resuscitation Council (ERC). A greater degree of ST-segment elevation is required to meet ERC criteria compared to ESC criteria. This may potentially lead to discrepancies in management between emergency teams and cardiologists, subsequent delay in reperfusion therapy and worse prognosis. Read More

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Inverted Meckel's diverticulum: a case report.

J Med Case Rep 2021 May 22;15(1):264. Epub 2021 May 22.

Department of General Surgery, Maulana Azad Medical College, New Delhi, India.

Background: Inverted Meckel's diverticulum refers to the condition in which the diverticulum inverts on itself. The reasons for such an inversion are poorly understood due to the rarity of the condition. We present a case of inverted Meckel's diverticulum, an uncommon finding, as a cause of recurrent intussusception. Read More

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Shear wave elastography evaluation in predicting the success of ultrasound-guided saline enema hydrostatic reduction technique in ileocolic intussusception.

Acta Radiol 2021 May 21:2841851211018799. Epub 2021 May 21.

Department of Pediatric Radiology, Gazi University, Ankara, Turkey.

Background: Intussusception is the invagination of the proximal intestinal segment into the distal portion. Reduction procedures with fluid or air have been used as the primary treatment of choice in clinically stable children.

Purpose: To evaluate the role of intestinal wall elasticity measurements by shear wave elastography (SWE) to predict the success of ultrasound-guided saline enema (USGSE) reduction. Read More

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A rare cause of lower gastrointestinal bleeding treated with robotic colorectal surgery.

Surg Case Rep 2021 May 20;7(1):125. Epub 2021 May 20.

Department of Surgery, UNM Hospital - 2ACC, University of New Mexico Hospital School of Medicine, Albuquerque, NM, 87131, USA.

Background: Metastatic melanoma to the colon is rarely diagnosed with an incidence of only 0.3% and more than 95% of cases identified post-mortem. Survival for patients with metastatic melanoma to the colon is poor, with 5-year survival rates of 26. Read More

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ST-segment elevation due to myocardial invasion of lung cancer mimicking ST elevation myocardial infarction: A case report.

Authors:
Hae Won Jung

Medicine (Baltimore) 2021 May;100(20):e26088

Department of Cardiology, Daegu Catholic University Medical Center, Daegu, Republic of Korea.

Introduction: When a cancer patient presents with ST-segment elevation on an electrocardiogram (ECG), several causes including acute myocardial infarction (MI) should be considered. Myocardial metastasis is one of the rare causes of ST-segment elevation in cancer patients and its clinical silence makes it difficult to diagnose.

Patient Concerns: A 78-year-old man with lung cancer presented to the emergency room for chest pain. Read More

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Unearthing the Janus-face cholesterogenesis pathways in cancer.

Biochem Pharmacol 2021 May 16:114611. Epub 2021 May 16.

Department of Biology, Geology, and Physical Sciences, Sul Ross State University, Alpine, TX, USA. Electronic address:

Cholesterol biosynthesis, primarily associated with eukaryotes, occurs as an essential component of human metabolism with biosynthetic deregulation a factor in cancer viability. The segment that partitions between squalene and the C-end cholesterol yields the main cholesterogenesis branch subdivided into the Bloch and Kandutsch-Russell pathways. Their importance in cell viability, in normal growth and development originates primarily from the amphipathic property and shape of the cholesterol molecule which makes it suitable as a membrane insert. Read More

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Retrograde Endovascular With Intimal Re-Entry Through Endarterectomy: The REWIRE Technique.

Ann Vasc Surg 2021 May 15. Epub 2021 May 15.

Mayo Clinic Arizona, Phoenix, AZ.

Objective: Hybrid lower extremity revascularization has been well described, typically consisting of common femoral endarterectomy (CFE) followed by direct patch puncture and endovascular treatment of any distal disease. We describe a modified technique that obviates the need for endovascular re-entry and simplifies treatment at the proximal and distal endpoints.

Methods: The REWIRE technique begins with retrograde arterial access via a patent tibial, pedal or femoropopliteal vessel. Read More

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Neuropathology of the spinal nerve roots, spinal cord, and brain in the first autopsied case of Charcot-Marie-Tooth disease 4F with a D651N mutation in the periaxin gene.

Neuropathology 2021 May 17. Epub 2021 May 17.

Department of Clinical Laboratory Medicine and Diagnostic Pathology, Shiga University of Medical Science, Ohtsu, Japan.

Charcot-Marie-Tooth disease (CMT) 4F is an autosomal recessive, hereditary peripheral neuropathy, mostly caused by mutations in the periaxin gene (PRX). This article reports neuropathological findings of the spinal nerve roots, spinal cord, and brain of a patient with CMT4F and a D651N missense mutation in PRX. The patient was a 74-year-old woman who had a history of peripheral neuropathy with onset at the age of 30 years. Read More

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Change in neoadjuvant chemotherapy could alter the prognosis of patients with pancreatic adenocarcinoma: A case report.

World J Clin Cases 2021 May;9(14):3418-3423

Gastroenterologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo 01426-010, Brazil.

Background: Neoadjuvant treatment has become a standard of care for borderline or locally advanced pancreatic cancer and is increasingly considered even for up-front resectable disease. The aim of this article is to present the case of a 62-year-old patient with locally advanced pancreatic adenocarcinoma who was successfully treated with gemcitabine plus nab-paclitaxel after the failure of the first line treatment.

Case Summary: Computerized tomography scan and magnetic resonance imaging demonstrated a nodular lesion of ill-defined limits in the body of the pancreas, measuring approximately 4. Read More

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Chronic fusiform extracranial vertebral artery aneurysm with recurrent posterior circulation emboli: Case report and review of the literature.

Interv Neuroradiol 2021 May 18:15910199211018581. Epub 2021 May 18.

Department of Neuroradiology, Royal Hallamshire Hospital, Sheffield Teaching Hospitals NHS Trust, Sheffield, UK.

We report a case of a 64-year-old man with a fusiform right extracranial vertebral artery aneurysm, spanning over half the extra-cranial V2 (foraminal) segment, presenting with recurrent multi-focal posterior circulation embolic ischaemic stroke. The patient was treated with endovascular embolisation of the right vertebral artery to prevent further thrombo-embolic events. Distal and proximal occlusion of the aneurysmal vertebral artery was performed with a micro-vascular plug with partial aneurysm sack embolisation to aid thrombosis and reduce the risk of recanalisation. Read More

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Biomechanical analysis of lumbar fusion with proximal interspinous process device implantation.

Int J Numer Method Biomed Eng 2021 May 17:e3498. Epub 2021 May 17.

Department of Mechanical Engineering, Tsinghua University, Beijing, China.

Lumbar spinal fusion may cause adjacent segment degeneration (ASD) in the long term. Recently, inserting an interspinous process device (IPD) proximal to the fusion has been proposed to prevent ASD. The aim of this study was to investigate the biomechanics of lumbar fusion with proximal IPD implantation (LFPI) under both static loads and whole body vibration (WBV). Read More

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[Treatment of irreducible intertrochanteric femoral fracture with minimally invasive clamp reduction technique via anterior approach].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2021 May;35(5):544-549

Department of Traumatic Orthopedics, Affiliated Hospital of Jining Medical University, Jining Shandong, 272029, P.R.China.

Objective: To explore the effectiveness of minimally invasive clamp reduction technique via anterior approach in treatment of irreducible intertrochanteric femoral fractures.

Methods: Between January 2015 and January 2019, 59 patients with irreducible intertrochanteric femoral fractures were treated with minimally invasive clamp reduction technique via anterior approach. There were 29 males and 30 females with an average age of 77. Read More

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Diabetes-related intestinal region-specific thickening of ganglionic basement membrane and regionally decreased matrix metalloproteinase 9 expression in myenteric ganglia.

World J Diabetes 2021 May;12(5):658-672

Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged 6726, Hungary.

Background: The importance of the neuronal microenvironment has been recently highlighted in gut region-specific diabetic enteric neuropathy. Regionally distinct thickening of endothelial basement membrane (BM) of intestinal capillaries supplying the myenteric ganglia coincide with neuronal damage in different intestinal segments. Accelerated synthesis of matrix molecules and reduced degradation of matrix components may also contribute to the imbalance of extracellular matrix dynamics resulting in BM thickening. Read More

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Myocardial infarction in a patient with single coronary artery - rare but real.

J Cardiol Cases 2021 May 7;23(5):246-249. Epub 2020 Dec 7.

Clinic for Internal Medicine III (Cardiology, Angiology, and Intensive Care Medicine), Saarland University Hospital, Kirrberger Str. 100, Gebäude 41, 66421 Homburg, Saar, Germany.

A 53-year-old woman was referred to our hospital with acute coronary syndrome. The coronary angiography demonstrated a single coronary artery. Culprit lesion was a subtotal occlusion of the proximal left anterior descending coronary artery, which was recanalized and treated with drug-coated balloon angioplasty. Read More

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Validation of a Deep Learning Tool in the Detection of Intracranial Hemorrhage and Large Vessel Occlusion.

Front Neurol 2021 29;12:656112. Epub 2021 Apr 29.

Department of Radiological Sciences, University of California, Irvine, Irvine, CA, United States.

Recently developed machine-learning algorithms have demonstrated strong performance in the detection of intracranial hemorrhage (ICH) and large vessel occlusion (LVO). However, their generalizability is often limited by geographic bias of studies. The aim of this study was to validate a commercially available deep learning-based tool in the detection of both ICH and LVO across multiple hospital sites and vendors throughout the U. Read More

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Clinical comparison of sub-mm high-resolution non-contrast coronary CMR angiography against coronary CT angiography in patients with low-intermediate risk of coronary artery disease: a single center trial.

J Cardiovasc Magn Reson 2021 May 17;23(1):57. Epub 2021 May 17.

School of Biomedical Engineering and Imaging Sciences, King's College London, 3rdfloor Lambeth Wing, London, SE1 7EH, UK.

Background: The widespread clinical application of coronary cardiovascular magnetic resonance (CMR) angiography (CMRA) for the assessment of coronary artery disease (CAD) remains limited due to low scan efficiency leading to prolonged and unpredictable acquisition times; low spatial-resolution; and residual respiratory motion artefacts resulting in limited image quality. To overcome these limitations, we have integrated highly undersampled acquisitions with image-based navigators and non-rigid motion correction to enable high resolution (sub-1 mm) free-breathing, contrast-free 3D whole-heart coronary CMRA with 100% respiratory scan efficiency in a clinically feasible and predictable acquisition time.

Objectives: To evaluate the diagnostic performance of this coronary CMRA framework against coronary computed tomography angiography (CTA) in patients with suspected CAD. Read More

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Mechanical thrombectomy of acute distal posterior cerebral artery occlusions.

J Clin Neurosci 2021 Jun 1;88:57-62. Epub 2021 Apr 1.

Institute of Neuroradiology, Charité, Universitary Medicine Berlin.

To describe our experience with mechanical thrombectomy (MTE) of acute distal posterior cerebral artery (PCA) occlusions, either isolated or in combination with more proximal vessel occlusions regarding recanalization rates, MTE techniques, and procedural safety. From the prospectively maintained stroke thrombectomy databases of two institutions, all consecutive patients subjected to MTE of acute distal PCA occlusion (P2 and 3 segments) between July 2013 and May 2020 were retrospectively identified. Imaging data and angiographic features, as well as patients' demographic and clinical data were evaluated. Read More

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Two-stage S sleeve resection of the right lower lobe and S and S segmentectomy of the left upper lobe: a case report.

Ann Transl Med 2021 Apr;9(8):723

Department of Thoracic Surgery, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, China.

Synchronous multiple nodules in the lungs, such as peripheral ground-glass opacities (GGOs) and solid small nodules, are common, but only lesions suspected of being malignant should be surgically removed. The surgical strategy is anatomical sub-lobectomy in early stage of non-small cell lung cancer synchronously or asynchronously to decrease the impact of lung resection on the lung function. Here, we report a case of a 56-year-old man, who was a pack-a-day smoker, with endobronchial hamartomas the medial basal bronchus (B7). Read More

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Predictive factors of venous recanalization in upper-extremity vein thrombosis.

PLoS One 2021 13;16(5):e0251269. Epub 2021 May 13.

Department of Internal Medicine and Vascular Medicine, CHU de Nantes, Nantes, France.

Background: Upper extremity venous thrombosis (UEVT) represents about 10% of venous thrombo-embolic disease. This is mainly explained by the increasing use of central venous line, for oncologic or nutritional care. The factors associated with venous recanalization are not known. Read More

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Type 2 persistent primitive olfactory artery associated with bilateral ophthalmic arteries arising from the middle meningeal arteries diagnosed by magnetic resonance angiography.

Surg Radiol Anat 2021 May 13. Epub 2021 May 13.

Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Hidaka, Japan.

Persistent primitive olfactory artery (PPOA) is a relatively rare variation of the proximal anterior cerebral artery (ACA). Traditionally, there are two types: Type 1 is a common type, which generally follows an anteroinferior course and which takes a hairpin turn before continuing to the A2 segment of the ACA. Type 2 is an extremely rare variation that continues to the anterior ethmoidal artery without a hairpin turn. Read More

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The effect of cervical intervertebral disc degeneration on the motion path of instantaneous center of rotation at degenerated and adjacent segments: A finite element analysis.

Comput Biol Med 2021 May 4;134:104426. Epub 2021 May 4.

Department of Orthopaedic Surgery, Beijing Tiantan Hospital, Capital Medical University, No.119, South 4th Ring West Road, Fengtai District, Beijing, 100070, China; National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing, 100853, China. Electronic address:

Background: The motion path of instantaneous center of rotation (ICR) is a crucial kinematic parameter to dynamically characterize cervical spine intervertebral patterns of motion; however, few studies have evaluated the effect of cervical disc degeneration (CDD) on ICR motion path. The purpose of this study was to investigate the effect of CDD on the ICR motion path of degenerated and adjacent segments.

Method: A validated nonlinear three-dimensional finite element (FE) model of a healthy adult cervical spine was used. Read More

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Complications and functional, psychological outcomes of bilateral tibial lengthening over intramedullary nail: evidence from Vietnam.

Int Orthop 2021 May 12. Epub 2021 May 12.

Institute of Trauma and Orthopaedics, 108 Military Central Hospital, No. 01 Tran Hung Dao Street, Hanoi, Vietnam.

Background: The purpose of this study was to assess the functional, psychological outcomes and complications of bilateral tibial lengthening over intramedullary nail. The intramedullary nail in this study was the Surgical Implant Generation Network (SIGN) nail.

Material And Methods: We enrolled patients desiring stature lengthening at the 108 Military Central Hospital (Hanoi, Vietnam) from October 2011 to January 2019. Read More

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Cyanoacrylate glue for closure of proximal enterocutaneous fistula: a case report.

J Surg Case Rep 2021 May 5;2021(5):rjab165. Epub 2021 May 5.

Department of Surgery, Dr. Soliman Fakeeh Hospital, Faculty of Medicine in Jeddah, Jeddah University, Jeddah, Saudi Arabia.

Enterocutaneous fistula (ECF) is a distressing complication. Commonly, it follows abdominal operations that require extensive adhesiolysis. Its management is challenging, burdening health systems. Read More

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Mechanical Thrombectomy for Distal Occlusions: Efficacy, Functional and Safety Outcomes: Insight from the STAR Collaboration.

World Neurosurg 2021 May 8. Epub 2021 May 8.

Texas Stroke Institute, Dallas-Fort Worth, Texas, USA.

Background: Mechanical thrombectomy (MT) is the standard of care for the treatment of proximal anterior circulation large vessel occlusions. However, little is known about its efficacy and safety in the treatment of distal intracranial occlusions.

Methods: This is a multicenter retrospective study of patients treated with MT at 15 comprehensive centers between January 2015 and December 2018. Read More

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