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https://www.readbyqxmd.com/read/27928672/pure-laparoscopic-right-anterior-sectionectomy-for-hepatocellular-carcinoma-with-great-vascular-exposure
#1
Varvara A Kirchner, Ki-Hun Kim, Seok-Hwan Kim, Sang-Kyung Lee
BACKGROUND: Laparoscopic hepatectomy is a common procedure that has been reported frequently [1-3]. However, laparoscopic resection of tumors located in hepatic segments 5 and/or 8 remains a technically difficult procedure as it requires two transection planes [4]. Furthermore, there are a greater number of hepatic vein and glissonian pedicle branches that require a division as compared to other hepatectomy operations. In this report, we present a pure laparoscopic right anterior sectionectomy (RAS) for hepatocellular carcinoma (HCC)...
December 7, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27923226/intraoperative-tumoral-bleeding-of-hypervascular-medulloblastoma-after-ventricular-drainage-a-case-report
#2
Han-Seung Ryu, Tae-Young Jung, Moon-Soo Han, Seul-Ki Kim, Kyung-Hwa Lee
We report a rare case of intraoperative tumoral bleeding of a hypervascular medulloblastoma. A 12-year-old girl presented with dizziness and nausea. Brain magnetic resonance (MR) images revealed an approximately 4.2-cm enhanced mass on the cerebellar vermis associated with mild perilesional edema and increased cerebral blood volume. Angiography showed tumoral staining and developed occipital and circular dural sinuses in the venous phase. A suboccipital craniotomy was performed. To relieve the intracranial pressure, cerebrospinal fluid (CSF) was drained via a lateral ventricular catheter in the occipital horn...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27920486/choroidal-and-skin-metastases-from-colorectal-cancer
#3
Joo Young Ha, Edward Hynseung Oh, Moon Ki Jung, Song Ee Park, Ji Tak Kim, In Gyu Hwang
Choroidal and skin metastasis of colon cancer is rare. In women, the frequency of cutaneous metastasis from colon cancer as the primary lesion in is 9% and skin metastasis occurs in 0.81% of all colorectal cancers. We report a patient with colonic adenocarcinoma who presented with visual disorder in her right eye and scalp pain as her initial symptoms. Contrast-enhance orbital magnetic resonance imaging with fat suppression revealed an infrabulbar mass, and skin biopsy of the posterior parietal scalp confirmed adenocarcinoma...
November 21, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27919857/hepatic-perivascular-epithelioid-cell-tumor-in-three-patients
#4
Bao-Bin Hao, Jian-Hua Rao, Ye Fan, Chuang-Yong Zhang, Xin-Zheng Dai, Xiao Li, Yan Leng, Feng Zhang
Perivascular epithelioid cell tumor (PEComa) is a rare, soft tissue tumor that can occur in various locations. The present report included three patients (one male and two females; age range, 25-51 years) with hepatic PEComas. The collected data included the clinical manifestations, diagnosis, management, treatment, and prognosis. Since it is difficult to diagnose hepatic PEComas by imaging, the patients were diagnosed by tumor tissue examination such as immunohistochemistry, which was positive for HMB-45, Melan-A, and SMA on all slides...
December 2016: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/27914206/is-ultrasound-a-valid-and-reliable-imaging-modality-for-airway-evaluation-an-observational-computed-tomographic-validation-study-using-submandibular-scanning-of-the-mouth-and-oropharynx
#5
Faraj W Abdallah, Eugene Yu, Phantila Cholvisudhi, Ahtsham U Niazi, Ki J Chin, Sherif Abbas, Vincent W Chan
OBJECTIVES: Ultrasound (US) imaging of the airway may be useful in predicting difficulty of airway management (DAM); but its use is limited by lack of proof of its validity and reliability. We sought to validate US imaging of the airway by comparison to CT-scan, and to assess its inter- and intra-observer reliability. We used submandibular sonographic imaging of the mouth and oropharynx to examine how well the ratio of tongue thickness to oral cavity height correlates with the ratio of tongue volume to oral cavity volume, an established tomographic measure of DAM...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27911930/the-therapeutic-response-of-gastrointestinal-stromal-tumors-to-imatinib-treatment-assessed-by-intravoxel-incoherent-motion-diffusion-weighted-magnetic-resonance-imaging-with-histopathological-correlation
#6
Feng Pan, Jie Den, Chunfang Zhang, He Wang, Jin Cheng, Weizhen Wu, Nan Hong, Yi Wang
PURPOSE: To exploit the intravoxel incoherent motion (IVIM) diffusion-weighted (DW) MRI when evaluating the therapeutic response of gastrointestinal stromal tumors (GIST) to Imatinib in a mouse model. MATERIALS AND METHODS: Mice with xenografts bearing cells from the GIST-T1 cell line were randomly divided into a treated group receiving Imatinib and a control group. DWMRI scans with 14 b-values (0-1500 s/mm2) were performed before and after treatment (days 1, 3 and 7)...
2016: PloS One
https://www.readbyqxmd.com/read/27908753/synthesis-and-evaluation-of-a-68-ga-labeled-bradykinin-b1-receptor-agonist-for-imaging-with-positron-emission-tomography
#7
Guillaume Amouroux, Zhengxing Zhang, Jinhe Pan, Silvia Jenni, Chengcheng Zhang, Navjit Hundal-Jabal, Nadine Colpo, Jutta Zeisler, Kuo-Shyan Lin, François Bénard
A novel (68)Ga-labeled bradykinin B1 receptor (B1R) agonist, (68)Ga-Z01115, was synthesized and evaluated for imaging with positron emission tomography (PET). Z01115 exhibited good binding affinity (Ki=25.4±5.1nM) to hB1R. (68)Ga-Z01115 was prepared in 74±5 decay-corrected radiochemical yield with >99% radiochemical purity and 155±89GBq/µmol (4.2±2.4Ci/μmol) specific activity. (68)Ga-Z01115 was stable in vitro in mouse plasma (93% remaining intact after 60min incubation), and relatively stable in vivo (51±5% remaining intact at 5min post-injection)...
November 23, 2016: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/27905140/herpes-simplex-infection-simulating-richter-transformation-a-series-of-four-cases-and-review-of-the-literature
#8
Alireza Salem, Sanam Loghavi, Joseph D Khoury, Rose Lou Marie C Agbay, Jeffrey L Jorgensen, Jeffrey L Medeiros
AIMS: Richter transformation (RT) occurs in 5-10% of patients with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) and is associated with a poor outcome. Histologic manifestations of RT are variable and include an increase in the proportion of large cells including prolymphocytes, immunoblasts and other pleomorphic cells along with an increased proliferation rate and often necrosis. Rarely, superimposed Herpes simplex virus (HSV) infection involving lymph nodes in patients with CLL/SLL may mimic RT clinically and histologically...
December 1, 2016: Histopathology
https://www.readbyqxmd.com/read/27904463/digital-infrared-thermal-imaging-of-crape-myrtle-leaves-infested-with-sooty-mold
#9
Jiyeon Kim, Si-Gyun Kweon, Junhyung Park, Harim Lee, Ki Woo Kim
The spatial patterns for temperature distribution on crape myrtle leaves infested with sooty mold were investigated using a digital infrared thermal imaging camera. The mean temperatures of the control and sooty regions were 26.98°C and 28.44°C, respectively. In the thermal images, the sooty regions appeared as distinct spots, indicating that the temperatures in these areas were higher than those in the control regions on the same leaves. This suggests that the sooty regions became warmer than their control regions on the adaxial leaf surface...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27899332/artificial-neural-network-for-suppression-of-banding-artifacts-in-balanced-steady-state-free-precession-mri
#10
Ki Hwan Kim, Sung-Hong Park
The balanced steady-state free precession (bSSFP) MR sequence is frequently used in clinics, but is sensitive to off-resonance effects, which can cause banding artifacts. Often multiple bSSFP datasets are acquired at different phase cycling (PC) angles and then combined in a special way for banding artifact suppression. Many strategies of combining the datasets have been suggested for banding artifact suppression, but there are still limitations in their performance, especially when the number of phase-cycled bSSFP datasets is small...
November 27, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27895874/computerized-tomography-and-magnetic-resonance-imaging-findings-in-malignant-perivascular-epithelioid-cell-tumors-of-the-ovaries-with-pulmonary-metastasis
#11
Han Yoo-Bee, Shin Yu Ri, Kim Ki Jun, Kim Jiyoung
Perivascular epithelioid cell tumor (PEComa) is a rare mesenchymal tumor composed of immunohistochemically and histologically distinctive perivascular epithelioid cells. Here, we report on the computed tomography (CT) and magnetic resonance imaging (MRI) findings of ovarian PEComa with pulmonary metastasis. The tumor was visible as a multilocular hemorrhagic mass that encased the ovarian vessels. These findings were different to those of other common ovarian tumors.
October 2016: Iranian Journal of Radiology: a Quarterly Journal Published By the Iranian Radiological Society
https://www.readbyqxmd.com/read/27892895/prothymosin-alpha-and-ki-67-expression-in-pituitary-adenomas
#12
Iga Wierzbicka-Tutka, Grzegorz Sokołowski, Agata Bałdys-Waligórska, Dariusz Adamek, Edyta Radwańska, Filip Gołkowski
INTRODUCTION: Prothymosin alpha (PTMA), a nuclear oncoprotein involved in cell cycle regulation, is used as a prognostic marker in many cancers. The histopathology of pituitary carcinomas and locally invasive adenomas is indistinguishable from that of benign tumors. A new marker is needed to differentiate these lesions. We evaluated PTMA in pituitary adenomas to determine its usefulness as a prognostic factor of tumor proliferation. MATERIAL/METHODS: We conducted a retrospective analysis of a group of 27 patients, including 15 females (56%) and 12 males (44%) with a mean age of 58...
November 7, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/27889847/diagnostic-value-of-small-bowel-capsule-endoscopy-in-isolated-ileitis-a-capentry-study
#13
Hyun Seok Lee, Yun Jeong Lim, Ki Nam Shim, Chang Mo Moon, Hyun Joo Song, Jin Oh Kim, Seong Ran Jeon, Dae Young Jung, Ji Hyun Kim, Kyeong Ok Kim, Bo-In Lee
BACKGROUND: Capsule endoscopy (CE) has proven to be highly effective at detecting small bowel lesions, but studies regarding the diagnostic impact of CE on ileitis are rare. AIMS: We evaluated the diagnostic value of small bowel CE for isolated ileitis observed during ileocolonoscopy. METHODS: The CE results in 137 patients initially diagnosed with ileitis without colonic mucosal abnormalities on ileocolonoscopy at one of eight tertiary referral centers between October 2002 and June 2015 were retrospectively analyzed...
November 26, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27888709/correlations-between-dce-mri-and-histopathological-parameters-in-head-and-neck-squamous-cell-carcinoma
#14
Alexey Surov, Hans Jonas Meyer, Matthias Gawlitza, Anne-Kathrin Höhn, Andreas Boehm, Thomas Kahn, Patrick Stumpp
BACKGROUND: Dynamic contrast-enhanced magnetic resonance imaging (DCE MRI) can characterize perfusion and vascularization of tissues. DCE MRI parameters can differentiate between malignant and benign lesions and predict tumor grading. The purpose of this study was to correlate DCE MRI findings and various histopathological parameters in head and neck squamous cell carcinoma (HNSCC). PATIENTS AND METHODS: Sixteen patients with histologically proven HNSCC (11 cases primary tumors and in 5 patients with local tumor recurrence) were included in the study...
November 23, 2016: Translational Oncology
https://www.readbyqxmd.com/read/27887989/quantitative-pet-image-reconstruction-employing-nested-expectation-maximization-deconvolution-for-motion-compensation
#15
Nicolas A Karakatsanis, Charalampos Tsoumpas, Habib Zaidi
Bulk body motion may randomly occur during PET acquisitions introducing blurring, attenuation-emission mismatches and, in dynamic PET, discontinuities in the measured time activity curves between consecutive frames. Meanwhile, dynamic PET scans are longer, thus increasing the probability of bulk motion. In this study, we propose a streamlined 3D PET motion-compensated image reconstruction (3D-MCIR) framework, capable of robustly deconvolving intra-frame motion from a static or dynamic 3D sinogram. The presented 3D-MCIR methods need not partition the data into multiple gates, such as 4D MCIR algorithms, or access list-mode (LM) data, such as LM MCIR methods, both associated with increased computation or memory resources...
November 16, 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/27871163/a-case-of-endoscopically-complete-remission-of-esophageal-neuroendocrine-tumors-by-concurrent-chemoradiation-therapy
#16
Myung Hee Kim, Hyun Yong Jeong, Jae Kyu Seong, Hee Seok Moon, Sun Hyung Kang, Duk Ki Kim
Neuroendocrine tumors (NETs) of the esophagus are extremely rare, aggressive and have a poor prognosis. Combined therapy using chemotherapy, radiotherapy and/or surgery appear effective. Here, we present a patient with a complaint of dysphagia who was diagnosed with this rare tumor. Upper gastrointestinal endoscope of a 46-year-old female revealed a localized ulcerative lesion in the middle esophagus. Histologic exam of biopsy specimens indicated a neuroendocrine carcinoma. The tumor cells were arranged in microtubular structures, with small and round cells containing scanty cytoplasm...
November 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/27869673/3d-visualization-of-developmental-toxicity-of-2-4-6-trinitrotoluene-in-zebrafish-embryogenesis-using-light-sheet-microscopy
#17
Juneyong Eum, Jina Kwak, Hee Joung Kim, Seoyoung Ki, Kooyeon Lee, Ahmed A Raslan, Ok Kyu Park, Md Ashraf Uddin Chowdhury, Song Her, Yun Kee, Seung-Hae Kwon, Byung Joon Hwang
Environmental contamination by trinitrotoluene is of global concern due to its widespread use in military ordnance and commercial explosives. Despite known long-term persistence in groundwater and soil, the toxicological profile of trinitrotoluene and other explosive wastes have not been systematically measured using in vivo biological assays. Zebrafish embryos are ideal model vertebrates for high-throughput toxicity screening and live in vivo imaging due to their small size and transparency during embryogenesis...
November 17, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27864816/giant-insulinoma-report-of-a-case-and-review-of-published-reports
#18
Kazumitsu Ueda, Tetsuro Taira, Hiroyuki Hakoda, Shoko Nakata, Shinya Okata, Takeshi Nagai, Shigeo Aoki, Hideyuki Mishima, Akihiko Sako, Tsunehiko Maruyama, Minoru Okumura
BACKGROUND: Larger insulinomas are reportedly more likely to be malignant; however, their biological behavior has not been clearly elucidated. We here report the characteristics and treatment of a giant insulinoma with local invasion and lymph node metastasis. We also review published reports concerning the clinical features of giant insulinomas and comparing their grading with that of pancreatic neuroendocrine tumors. CASE PRESENTATION: A 71-year-old man was referred to our hospital for investigation of persistent hypoglycemia...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27864578/mesoscopic-imaging-of-glioblastomas-are-diffusion-perfusion-and-spectroscopic-measures-influenced-by-the-radiogenetic-phenotype
#19
Theo Demerath, Carl Philipp Simon-Gabriel, Elias Kellner, Ralf Schwarzwald, Thomas Lange, Dieter Henrik Heiland, Peter Reinacher, Ori Staszewski, Hansjörg Mast, Valerij G Kiselev, Karl Egger, Horst Urbach, Astrid Weyerbrock, Irina Mader
The purpose of this study was to identify markers from perfusion, diffusion, and chemical shift imaging in glioblastomas (GBMs) and to correlate them with genetically determined and previously published patterns of structural magnetic resonance (MR) imaging. Twenty-six patients (mean age 60 years, 13 female) with GBM were investigated. Imaging consisted of native and contrast-enhanced 3D data, perfusion, diffusion, and spectroscopic imaging. In the presence of minor necrosis, cerebral blood volume (CBV) was higher (median ± SD, 2...
November 18, 2016: Neuroradiology Journal
https://www.readbyqxmd.com/read/27863451/cerebral-white-matter-abnormalities-in-patients-with-charcot-marie-tooth-disease
#20
Mina Lee, Chang-Hyun Park, Hwa-Kyung Chung, Hyeon Jin Kim, Yunseo Choi, Jeong Hyun Yoo, Young Chul Yoon, Young Bin Hong, Ki Wha Chung, Byung-Ok Choi, Hyang Woon Lee
Here, we report the structural evidence of cerebral white matter abnormalities in Charcot-Marie-Tooth (CMT) patients and the relationship between these abnormalities and clinical disability. Brain diffusion tensor imaging (DTI) was performed in CMT patients with demyelinating (CMT1A/CMT1E), axonal (CMT2A/CMT2E), or intermediate (CMTX1/DI-CMT) peripheral neuropathy. Although all patients had normal brain MRI, all genetic subgroups except CMT1A had abnormal DTI findings indicative of significant cerebral white matter abnormalities: decreased fractional anisotropy and axial diffusivity, and increased radial diffusivity...
November 18, 2016: Annals of Neurology
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