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Confocal laser endomicroscopy

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https://www.readbyqxmd.com/read/28938608/use-of-confocal-laser-endomicroscopy-with-a-fluorescently-labeled-fatty-acid-to-diagnose-colorectal-neoplasms
#1
Feihong Deng, Yuan Fang, Zhiyong Shen, Wei Gong, Tao Liu, Jing Wen, Wanling Zhang, Xianjun Zhu, Hui Zhong, Tong Wang, Fachao Zhi, Biao Nie
Endoscopic treatment for early colorectal cancer closely correlates with patient prognosis. However, endoscopic differentiation between carcinomas and non-neoplastic lesions remains difficult. Here, we topically stained colorectal neoplasms with a fatty acid analogue (BODIPY-FA) and quantified the fluorescent signals using confocal laser endomicroscopy (CLE) and fluorescence microscopy. We also analyzed protein expression in colorectal cancer tissues. We found that expression of fatty acid synthase was elevated, while the expression of fatty acid transporters was reduced in colorectal cancer...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28932568/needle-based-confocal-laser-endomicroscopy-in-the-diagnosis-of-peripheral-pulmonary-nodule-a-preliminary-report
#2
Zhuquan Su, Changhao Zhong, Shiyue Li, Xiaobo Chen, Yu Chen, Chunli Tang
Lung cancer is one of the most fatal cancers in the world. To early distinguish benign and malignant pulmonary nodule is critical for disease prognosis. Confocal laser endomicroscopy (CLE) can be used to explore bronchus mucous membrane, alveolar elastic fiber structures and microvessels, and could be helpful for the diagnostic imaging and for the localization guidance. In this report, we presented two cases of peripheral pulmonary nodule. Under the guidance of X-ray and endobronchial ultrasound, needle-based confocal laser endomicroscopy (nCLE) could directly approach the peripheral pulmonary nodule via an exploratory puncture needle...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28931888/automatic-classification-of-cancerous-tissue-in-laserendomicroscopy-images-of-the-oral-cavity-using-deep-learning
#3
Marc Aubreville, Christian Knipfer, Nicolai Oetter, Christian Jaremenko, Erik Rodner, Joachim Denzler, Christopher Bohr, Helmut Neumann, Florian Stelzle, Andreas Maier
Oral Squamous Cell Carcinoma (OSCC) is a common type of cancer of the oral epithelium. Despite their high impact on mortality, sufficient screening methods for early diagnosis of OSCC often lack accuracy and thus OSCCs are mostly diagnosed at a late stage. Early detection and accurate outline estimation of OSCCs would lead to a better curative outcome and a reduction in recurrence rates after surgical treatment. Confocal Laser Endomicroscopy (CLE) records sub-surface micro-anatomical images for in vivo cell structure analysis...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28929643/demons-registration-for-in-vivo-and-deformable-laser-scanning-confocal-endomicroscopy
#4
Wei-Ming Chiew, Feng Lin, Hock Soon Seah
A critical effect found in noninvasive in vivo endomicroscopic imaging modalities is image distortions due to sporadic movement exhibited by living organisms. In three-dimensional confocal imaging, this effect results in a dataset that is tilted across deeper slices. Apart from that, the sequential flow of the imaging-processing pipeline restricts real-time adjustments due to the unavailability of information obtainable only from subsequent stages. To solve these problems, we propose an approach to render Demons-registered datasets as they are being captured, focusing on the coupling between registration and visualization...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28922432/identifying-a-mucinous-neoplasm-utilizing-confocal-laser-endomicroscopy-branch-duct-gastric-type-intraductal-papillary-mucinous-neoplasm
#5
Amrit K Kamboj, Rohan M Modi, Darwin L Conwell, Somashekar G Krishna
No abstract text is available yet for this article.
September 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28915142/probe-based-confocal-laser-endomicroscopy-in-metastatic-pulmonary-calcification
#6
Igor Vasilev, Igor Mamenko, Irina Tabanakova, Irina Vikulova, Vera Shevel, Alexey Ushkov, Tatiana Novickaya, Ludmila Archakova, Eugene Sokolovich, Piotr Yablonskii
We report a case of metastatic pulmonary calcification in a patient with chronic renal failure on hemodialysis and secondary hyperparathyroidism. The diagnosis was made by using a probe-based confocal endomicroscopy which showed specific structures in the lung tissue and was proven by a transbronchial lung biopsy. To the best of our knowledge, this is the first reported case of the confocal endomicroscopy findings in a patient with metastatic pulmonary calcification.
September 14, 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/28886101/high-prevalence-of-gastric-intestinal-metaplasia-detected-by-confocal-laser-endomicroscopy-in-zambian-adults
#7
Violet Kayamba, Aaron Shibemba, Kanekwa Zyambo, Douglas C Heimburger, Douglas R Morgan, Paul Kelly
BACKGROUND: Confocal laser endomicroscopy (CLE) may increase the detection of gastric premalignant lesions, and facilitate targeted biopsies for histology. The study aim was to analyse premalignant lesions in Zambian adults using CLE. METHODS: Using CLE and histology we analysed the antral mucosa for gastric premalignant lesions in asymptomatic adults living with HIV and in HIV seronegative adults. Fasting gastric pH and the presence of Helicobacter pylori (H. pylori) were also evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28885303/validation-of-probe-based-confocal-laser-endomicroscopy-pcle-criteria-for-diagnosing-colon-polyp-histology
#8
Sreekar Vennelaganti, Prashanth Vennalaganti, Sharad Mathur, Satish Singh, Mazen Jamal, Vijay Kanakadandi, Tarun Rai, Matthew Hall, Neil Gupta, Venkat Nutalapati, Benjamin Alsop, Benjamin Hornung, Prateek Sharma
BACKGROUND: Validated probe-based confocal endomicroscopy (pCLE) criteria for distinguishing hyperplastic polyps (HPs) and tubular adenomas (TA) have not yet been developed. AIM: To develop pCLE criteria for distinguishing HP from TA and evaluate its performance characteristics among experts. METHODS: pCLE criteria for colon polyp histology were developed and tested in 2 phases prospectively. Phase I: 8 preliminary criteria were developed and tested internally...
September 6, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28874959/clinical-impact-of-confocal-laser-endomicroscopy-in-the-management-of-gastrointestinal-lesions-with-an-uncertain-diagnosis
#9
Carlos Robles-Medranda, Maria Vargas, Jesenia Ospina, Miguel Puga-Tejada, Manuel Valero, Miguel Soria, Gladys Bravo, Carlos Robles-Jara, Hannah Pitanga Lukashok
AIM: To evaluate the clinical impact of confocal laser endomicroscopy (CLE) in the diagnosis and management of patients with an uncertain diagnosis. METHODS: A retrospective chart review was performed. Patients who underwent CLE between November 2013 and October 2015 and exhibited a poor correlation between endoscopic and histological findings were included. Baseline characteristics, indications, previous diagnostic studies, findings at the time of CLE, clinical management and histological results were analyzed...
August 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28852161/probe-based-confocal-laser-endomicroscopy-for-in-vivo-evaluation-of-the-tumor-vasculature-in-gastric-and-rectal-carcinomas
#10
Paola Spessotto, Mara Fornasarig, Eliana Pivetta, Stefania Maiero, Raffaella Magris, Maurizio Mongiat, Vincenzo Canzonieri, Paolo De Paoli, Antonino De Paoli, Angela Buonadonna, Diego Serraino, Chiara Panato, Claudio Belluco, Renato Cannizzaro
Probe-based Confocal Laser Endomicroscopy (pCLE) is a powerful imaging technique that allows to perform gastrointestinal endomicroscopy at subcellular resolution. The aim of this study was to assess the use of pCLE to evaluate tumor angiogenesis in rectal and gastric cancers. A total of 35 consecutive patients with gastric and 91 with rectal carcinomas underwent endoscopy and pCLE during the same examination. Vascular assessment was based on vessel shape and size, vessel permeability and blood flow, and allowed the creation of an angiogenic score ranging from 0, for normal vasculature, to 4, for aberrant vasculature...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28832171/-confocal-laser-endomicroscopy-in-the-diagnostics-of-malignancy-of-the-gastrointestinal-tract
#11
P Moravčík, J Hlavsa, L Kunovsky, Z Kala, I Penka, M Dastych
In confocal laser endomicroscopy (CLE), a type of optical microscope that uses a laser beam as its light source and processes the acquired image by processor unit is used. Although the principle behind the device has been known since 1957, its use in clinical practice has only recently been enabled by technical developments, and it is therefore a relatively new modality in differential diagnosis. CLE enables real-time microscopic imaging of the tissue under investigation and in fact non-invasive in vivo biopsy...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28772324/use-of-needle-based-confocal-laser-endomicroscopy-in-the-diagnosis-of-multifocal-intraductal-papillary-mucinous-neoplasm-with-high-grade-dysplasia
#12
Yun-Lu Feng, Ai-Ming Yang, Xi Wu, Zhilan Meng, Xiaoyan Chang, Zhiyong Liang, Junchao Guo
No abstract text is available yet for this article.
August 3, 2017: Endoscopy
https://www.readbyqxmd.com/read/28767389/use-of-confocal-laser-endomicroscopy-with-a-fluorescently-labeled-fatty-acid-to-diagnose-colorectal-neoplasms
#13
Feihong Deng, Yuan Fang, Zhiyong Shen, Wei Gong, Tao Liu, Jing Wen, Wanling Zhang, Xianjun Zhu, Hui Zhong, Tong Wang, Fachao Zhi, Biao Nie
Endoscopic treatment for early colorectal cancer closely correlates with patient prognosis. However, endoscopic differentiation between carcinomas and non-neoplastic lesions remains difficult. Here, we topically stained colorectal neoplasms with a fatty acid analogue (BODIPY-FA) and quantified the fluorescent signals using confocal laser endomicroscopy (CLE) and fluorescence microscopy. We also analyzed protein expression in colorectal cancer tissues. We found that expression of fatty acid synthase was elevated, while the expression of fatty acid transporters was reduced in colorectal cancer...
July 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28753800/correlation-between-confocal-laser-endomicroscopy-cellvizio-%C3%A2-and-histological-grading-of-upper-tract-urothelial-carcinoma-a-step-forward-for-a-better-selection-of-patients-suitable-for-conservative-management
#14
Alberto Breda, Angelo Territo, Andrea Guttilla, Francesco Sanguedolce, Martina Manfredi, Luigi Quaresima, Jose M Gaya, Ferran Algaba, Joan Palou, Humberto Villavicencio
BACKGROUND: Despite the recent growing interest in the conservative management of upper tract urothelial carcinoma (UTUC), the diagnostic process is still a challenge for the risk of tumor undergrading. Real-time confocal laser endomicroscopy (CLE) provides in vivo microscopic images of tissues using a low-energy laser light source. OBJECTIVE: To describe our initial experience with CLE for the real-time characterization of UTUC. DESIGN, SETTING, AND PARTICIPANTS: Fourteen flexible ureteroscopies (f-URS) were performed at our center with CLE for UTUC...
June 4, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28753702/probe-based-endomicroscopy-for-in-vivo-detection-of-gastric-intestinal-metaplasia-and-neoplasia-a-multicenter-randomized-controlled-trial
#15
Xiu-Li Zuo, Zhen Li, Chang-Qing Li, You-You Zheng, Li-Dong Xu, Jie Chen, Rong Lin, Jun Song, Chao-Hui Yu, Min Yue, Qi Zhou, Zhi-Yan Liu, Yan-Qing Li
Background and study aims Owing to the indistinctive endoscopic appearance of gastric intestinal metaplasia (GIM), gastric intraepithelial neoplasia (GIN), and early gastric cancer (EGC), a significant number of such lesions may be missed during surveillance endoscopy. The aim of this clinical trial was to assess the value of combined computed virtual chromoendoscopy (flexible spectral imaging color enhancement [FICE]) and probe-based confocal laser endomicroscopy (pCLE) for in vivo detection of GIM, GIN, and EGC...
July 28, 2017: Endoscopy
https://www.readbyqxmd.com/read/28750446/-modern-endoscopic-imaging-tools-for-urothelial-carcinoma-of-the-urinary-bladder
#16
M C Kriegmair, M Ritter, M S Michel, C Bolenz
Cystoscopy is the gold standard for the initial diagnosis of urothelial carcinoma in the urinary bladder (UCB). White light exhibits significant limitations in its ability to detect flat lesions or carcinoma in situ. Photodynamic Diagnosis (PDD) and Narrow Band Imaging (NBI) are established techniques which may improve the detection rates of UCB and reduce the risk of recurrence. Multiple novel tools have been developed in order to improve the diagnostic accuracy of endoscopic procedures, including Digital Contrast Enhancement Technology, Confocal Laser Endomicroscopy (CLE) and Optical Coherence Tomography (OCT)...
August 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28731617/in%C3%A2-vivo-diagnosis-of-early-stage-gastric-cancer-found-after-helicobacter-pylori-eradication-using-probe-based-confocal-laser-endomicroscopy
#17
Noriyuki Horiguchi, Tomomitsu Tahara, Hyuga Yamada, Dai Yoshida, Masaaki Okubo, Mitsuo Nagasaka, Yoshihito Nakagawa, Tomoyuki Shibata, Tetsuya Tsukamoto, Makoto Kuroda, Naoki Ohmiya
BACKGROUND AND AIM: Early-stage gastric cancer (EGC) found after Helicobacter pylori (Hp) eradication often displays non-tumorous regenerative epithelium and/or maturated tumorous epithelium overlying the cancerous tissue, which may confuse endoscopic and histological diagnosis. Probe-based confocal laser endomicroscopy (pCLE) enables in vivo real-time optical biopsy. We compared the diagnostic yields for these EGC cases using conventional white light endoscopy (WL), magnifying endoscopy with narrow-band imaging (ME-NBI), pCLE, and endoscopic biopsy; we also compared the accuracy of the horizontal extent diagnosis between ME-NBI and pCLE...
July 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28692889/dynamic-real-time-in-vivo-confocal-laser-endomicroscopy-of-the-fallopian-tube-during-laparoscopy-in-the-prevention-of-ovarian-cancer
#18
Gautier Chene, Lauriane Chauvy, Annie Buenerd, Stéphanie Moret, Béatrice Nadaud, Philippe Chabert, Gery Lamblin
OBJECTIVES: Recently it has been postulated that most ovarian cancers have a tubal origin. The identification of preinvasive tubal lesions would be of great interest in the early diagnosis of ovarian cancer. Optical biopsy has been developed and validated in the detection of precancerous lesions (such as Barrett's oesophagus). The first objective of this study was to assess the feasibility of optical biopsy in the study of fallopian tubes during laparoscopy. The second objective was to describe the images in benign premalignant and malignant tubes with a histopathological and immunohistochemical (p53 and Ki67 expressions) correlation...
July 5, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28674950/confocal-laser-endomicroscopy-in-ulcerative-colitis-beyond-endoscopic-assessment-of-disease-activity
#19
F Maione, M C Giglio, G Luglio, A Rispo, M D'Armiento, B Manzo, G Cassese, P Schettino, N Gennarelli, S Siciliano, F P D'Armiento, G D De Palma
BACKGROUND: The aim of this study was to investigate the role of confocal laser endomicroscopy (CLE) in the assessment of disease activity in ulcerative colitis (UC). METHODS: Consecutive patients with UC referred to our inflammatory bowel disease unit for colonoscopy were enrolled. Patients without UC were used as controls. UC activity was evaluated by white light endoscopy and classified according to the Mayo Ulcerative Colitis Endoscopic Score of Severity. Endoscopic biopsies were also taken for histological assessment of disease activity and then assessed with CLE...
July 3, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28671975/in-and-ex-vivo-molecular-imaging-of-apoptosis-to-assess-sensitivity-of-non-small-cell-lung-cancer-to-egfr-inhibitors-using-probe-based-confocal-laser-endomicroscopy
#20
Florian Guisier, Pierre Bohn, Maxime Patout, Nicolas Piton, Insaf Farah, Pierre Vera, Luc Thiberville, Mathieu Salaün
BACKGROUND: Prediction of treatment outcome of non-small cell lung cancer (NSCLC) with EGFR inhibitors on the basis of the genetic analysis of the tumor can be incorrect in case of rare or complex mutations, bypass molecular activation pathways, or pharmacodynamic variations. The aim of this study was to develop an ex vivo and in vivo real-time quantitative imaging test for EGFR inhibitors sensitivity assessment. METHODS: Erlotinib resistant (A549, H460, H1975), insensitive (H1650) and hypersensitive (HCC827) cell lines were injected subcutaneously in Nude mice...
2017: PloS One
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