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https://www.readbyqxmd.com/read/28436752/quantitative-mr-imaging-of-intra-orbital-structures-tissue-specific-measurements-and-age-dependency-compared-to-extra-orbital-structures-using-multispectral-quantitative-mr-imaging
#1
Memi Watanabe, Karen Buch, Akifumi Fujita, Hernán Jara, Muhammad Mustafa Qureshi, Osamu Sakai
The orbit can be affected by unique pathologic conditions and often requires MRI evaluation. The purpose of this study was to investigate the age-related changes in multiple intra-orbital structures using quantitative MRI (qMRI). Thirty-eight subjects (20 males, 18 females; ages 0.5-87 years) underwent MRI with a mixed turbo spin echo sequence. T1 and T2 measurements were obtained within ROI in 6 intra-orbital structures (medial and lateral rectus muscles, medial and lateral retrobulbar fat, lacrimal gland, and optic nerve), and compared with those of corresponding extra-orbital structures (masseter muscle, subcutaneous cheek fat, buccal fat, parotid gland, and frontal white matter)...
April 24, 2017: Orbit
https://www.readbyqxmd.com/read/28434191/the-effect-of-parotid-gland-sparing-imrt-on-salivary-composition-flow-rate-and-xerostomia-measures
#2
Thomas M Richards, Tara Hurley, Lorna Grove, Kevin J Harrington, Guy H Carpenter, Gordon B Proctor, Christopher M Nutting
OBJECTIVES: To describe parotid gland (PG) saliva organic and inorganic composition and flow rate changes, after curative intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC) and analyse the relationship between PG saliva analytes and xerostomia measures. METHODS AND MATERIALS: Twenty-six patients recruited to five prospective phase 2 or 3 trials which assessed toxicity and efficacy of IMRT by HNC subsite, provided longitudinal PG salivas. Salivary flow rate, subjective and objective xerostomia measures were prospectively collected and salivas tested for inorganic and organic analytes...
April 23, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28430990/three-dimensional-dose-prediction-and-validation-with-the-radiobiological-gamma-index-based-on-a-relative-seriality-model-for-head-and-neck-imrt
#3
Noriaki Hamatani, Iori Sumida, Yutaka Takahashi, Michio Oda, Yuji Seo, Fumiaki Isohashi, Keisuke Tamari, Kazuhiko Ogawa
This study proposes a quality assurance (QA) method incorporating radiobiological factors based on the QUANTEC-determined tumor control probability and the normal tissue complication probability (NTCP) of head-and-neck intensity-modulated radiation therapy (HN-IMRT). Per-beam measurements were conducted for 20 cases using a 2D detector array. Three-dimensional predicted dose distributions within targets and organs at risk were reconstructed based on the per-beam QA results derived from differences between planned and measured doses...
April 19, 2017: Journal of Radiation Research
https://www.readbyqxmd.com/read/28428065/in-vivo-studies-investigating-biodistribution-of-nanoparticle-encapsulated-rhodamine-b-delivered-via-dissolving-microneedles
#4
Joakim Kennedy, Eneko Larrañeta, Maelíosa T C McCrudden, Cian M McCrudden, Aaron J Brady, Steven J Fallows, Helen O McCarthy, Adrien Kissenpfennig, Ryan F Donnelly
Nanoparticles (NPs) have undergone extensive investigation as drug delivery and targeting vehicles. NP delivery is often via the parenteral route, reliant on administration using hypodermic needles, which can be associated with patient compliance issues and safety concerns. In the recent past, the intradermal delivery of NPs, via novel dissolving microneedle (MN) arrays has garnered interest in the pharmaceutical community. However, published studies using this combinatorial approach have been limited, in that they have focussed on the use of in vitro and ex vivo models only...
April 17, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28421710/synovial-sarcoma-metastatic-to-the-parotid-gland-a-possible-pitfall-in-salivary-gland-fine-needle-aspiration-cytology-report-of-a-case-with-immunocytochemical-and-fluorescence-in-situ-hybridization-findings
#5
Franco Fulciniti, Jessica Barizzi, Vittoria Martin, Vittorio Tarallo, Stefano Ermanni
We report one case of metastatic synovial sarcoma (SS) to the parotid gland in a 93-year-old male. The patient had undergone upper left pulmonary lobectomy with mediastinal lymphadenectomy for SS of the lung 5 years before. The cytopathologic presentation and the immunocytochemical findings on the FNA sample were suggestive of a spindle cell myoepithelioma, while a SYT rearrangement was identified by a FISH performed on a cytological smear of the lesion. The diagnosis was further confirmed also by positive immunocytochemical expression of TLE1 on a section from the obtained cell block...
April 19, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28421441/n-methyl-serotonin-analogues-from-the-bufo-bufo-toad-venom-interact-efficiently-with-the-%C3%AE-7-nicotinic-acetylcholine-receptors
#6
E V Kryukova, D S Lebedev, I A Ivanov, D A Ivanov, V G Starkov, V I Tsetlin, Yu N Utkin
Two low-molecular-weight compounds were isolated from the parotid gland secret of the toad Bufo bufo, which by absorption spectra and HPLC-MS/MS chromatography data correspond to di- and trimethyl derivatives of serotonin (5-hydorxytryptamine): bufotenine (confirmed by counter synthesis) and bufotenidine (5-HTQ). In experiments on competitive radioligand binding, these compounds showed a higher affinity and selectivity for neuronal α7 nicotinic acetylcholine receptors compared with the muscular cholinergic receptors...
January 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28419576/agreement-between-rapid-on-site-evaluation-and-the-final-cytological-diagnosis-of-salivary-gland-specimens
#7
S Wangsiricharoen, S Lekawanvijit, S Rangdaeng
OBJECTIVE: Rapid on-site evaluation (ROSE) has been shown to be beneficial in determining the adequacy and a preliminary diagnosis in multiple organ systems. However, little is known regarding the diagnostic values and agreement of ROSE compared with a final cytological diagnosis in salivary gland fine needle aspiration (FNA). The aim of the present study was to evaluate agreement and compare accuracy between ROSE and a final cytological diagnosis of salivary gland FNA, using a final histological diagnosis as a gold standard...
April 16, 2017: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/28416688/knockout-of-the-lrrc26-subunit-reveals-a-primary-role-of-lrrc26-containing-bk-channels-in-secretory-epithelial-cells
#8
Chengtao Yang, Vivian Gonzalez-Perez, Taro Mukaibo, James E Melvin, Xiao-Ming Xia, Christopher J Lingle
Leucine-rich-repeat-containing protein 26 (LRRC26) is the regulatory γ1 subunit of Ca(2+)- and voltage-dependent BK-type K(+) channels. BK channels that contain LRRC26 subunits are active near normal resting potentials even without Ca(2+), suggesting they play unique physiological roles, likely limited to very specific cell types and cellular functions. By using Lrrc26 KO mice with a β-gal reporter, Lrrc26 promoter activity is found in secretory epithelial cells, especially acinar epithelial cells in lacrimal and salivary glands, and also goblet and Paneth cells in intestine and colon, although absent from neurons...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28415058/-a-case-of-arteriovenous-malformation-of-the-parotid-gland-associated-with-cowden-disease
#9
Kazuhiko Nishi, Satoshi Murai, Hisakazu Itami, Shinji Otsuka, Noboru Kusaka, Tsukasa Nishiura, Nobuhiko Kimura, Kotaro Ogihara
We report a rare case of arteriovenous malformation(AVM)of the parotid gland associated with Cowden disease successfully treated with preoperative embolization followed by surgical removal. A 39-year-old man with a history of Cowden disease presented with a pulsating and growing mass on his left lower jaw. Contrast-enhanced computed tomography(CT)and angiography revealed a high-flow AVM in the deep lobe of the left parotid gland. After intravascular embolization of the feeding arteries, surgery was performed using the NIM-response<sup>®</sup>3...
April 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28414799/comprehensive-evaluation-of-ten-deformable-image-registration-algorithms-for-contour-propagation-between-ct-and-cone-beam-ct-images-in-adaptive-head-neck-radiotherapy
#10
Xin Li, Yuyu Zhang, Yinghua Shi, Shuyu Wu, Yang Xiao, Xuejun Gu, Xin Zhen, Linghong Zhou
Deformable image registration (DIR) is a critical technic in adaptive radiotherapy (ART) for propagating contours between planning computerized tomography (CT) images and treatment CT/cone-beam CT (CBCT) images to account for organ deformation for treatment re-planning. To validate the ability and accuracy of DIR algorithms in organ at risk (OAR) contour mapping, ten intensity-based DIR strategies, which were classified into four categories-optical flow-based, demons-based, level-set-based and spline-based-were tested on planning CT and fractional CBCT images acquired from twenty-one head & neck (H&N) cancer patients who underwent 6~7-week intensity-modulated radiation therapy (IMRT)...
2017: PloS One
https://www.readbyqxmd.com/read/28412261/diffusion-and-perfusion-weighted-magnetic-resonance-imaging-an-alternative-to-fine-needle-biopsy-or-only-an-adjunct-test-in-preoperative-differential-diagnostics-of-malignant-and-benign-parotid-tumors
#11
Bogusław Mikaszewski, Karolina Markiet, Aneta Smugała, Dominik Stodulski, Edyta Szurowska, Czesław Stankiewicz
PURPOSE: The role of dynamic magnetic resonance imaging (MRI) in the preoperative differential diagnostics of parotid tumors is unclear. The aim of this study was to compare the accuracy of dynamic MRI and routinely used fine needle biopsy examination in the preoperative differentiation of malignant and benign parotid tumors. MATERIALS AND METHODS: The study included 100 consecutive patients with parotid tumors treated surgically at the authors' center. Accuracy of dynamic MRI and fine needle biopsy examinations in the differential diagnostics of malignant and benign lesions was verified against the gold standard (ie, final histologic diagnosis)...
March 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28411466/capillary-isoelectric-focusing-with-whole-column-imaging-detection-icief-a-new-approach-to-the-characterization-and-quantification-of-salivary-%C3%AE-amylase
#12
Atefeh S Zarabadi, Tiemin Huang, John G Mielke
Saliva is an easily collected biological fluid with potentially important diagnostic value. While gel electrophoresis is generally used for salivary analysis, we employed the capillary isoelectric focusing technique to allow for a rapid, automated mode of electrophoresis. Capillary isoelectric focusing coupled with UV whole column imaging detection (iCIEF) was used to develop a robust protocol to characterize salivary α-amylase collected from various glands. Notably, three sample preparation methods were examined: ultrafiltration, gel-filtration, and starch affinity interaction with salivary amylase...
March 30, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28411376/nodular-oncocytic-hyperplasia-can-cytomorphology-allow-for-the-preoperative-diagnosis-of-a-nonneoplastic-salivary-disease
#13
Lisa M Rooper, Mine Onenerk, Momin T Siddiqui, William C Faquin, Justin A Bishop, Syed Z Ali
BACKGROUND: Nodular oncocytic hyperplasia (oncocytosis) of the salivary glands is a benign process that does not inherently require surgical excision. However, cytologic findings in fine-needle aspiration (FNA) of oncocytosis cases have not been well characterized previously, limiting preoperative identification. METHODS: All available cases of oncocytosis with corresponding FNA specimens were identified from the pathology archives of 3 academic institutions. Clinical, cytologic, and histologic findings were tabulated for all cases...
April 14, 2017: Cancer
https://www.readbyqxmd.com/read/28408701/low-grade-mucoepidermoid-tumor-of-parotid-gland-presenting-as-focal-asymmetry-in-the-follow-up-radioiodine-scan-in-a-patient-of-differentiated-papillary-carcinoma-of-thyroid
#14
Chinna Naik, Sandip Basu
Low grade mucoepidermoid tumor of the right parotid gland presenting as focal uptake in the follow-up whole body iodine scan in a patient of differentiated papillary carcinoma of thyroid 1 year after successful ablation is presented in this report. Following surgical excision, the histopathology was proven. The illustrated case represents false positive focal accumulation of (131)I in low grade mucoepidermoid carcinoma of the salivary gland that arose early in the follow-up course in differentiated thyroid carcinoma post-radioiodine (RAI)...
April 13, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/28407639/modified-functional-superficial-parotidectomy-with-ligation-of-the-major-branch-of-the-parotid-duct-extending-to-the-superficial-lobe
#15
Jung Woo Chang, Soo Seong Leem, Hwan Jun Choi, Jang Hyun Lee
A functional superficial parotidectomy can maintain salivary function by preserving the Stensen duct. However, this technique still brings the possibility of salivary leakage, because major branches of the parotid duct from the resected site do not get ligated. To reduce this complication, this study introduces a modified technique with major branch ligation. From December 2008 to February 2015, 14 patients who underwent superficial parotidectomy were divided into 2 groups. Group A was treated with the modified functional superficial parotidectomy involving the major branch between the superficial lobe and parotid duct...
May 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28405155/multiple-clear-cell-sarcomas-of-small-intestine-with-parotid-gland-metastasis-a-case-report
#16
Hao Su, Wen-Sheng Liu, Wen-Hao Ren, Peng Wang, Lei Shi, Hai-Tao Zhou
Clear-cell sarcoma is a rare, malignant soft tissue tumor that displays melanocytic differentiation with a distinct molecular profile. It is rarely localized in the gastrointestinal tract. Herein we reported a case of multiple synchronous clear-cell sarcomas of the gastrointestinal tract with parotid gland metastasis. A 51-year-old male patient presented with a growing painless mass under the right ear. A preoperative positron emission tomography/computed tomography showed multiple intestinal masses and a mass in the right parotid with increased glucose uptake, and he underwent operative treatment with resection of three tumors in the jejunum and ileum and then received a right parotidectomy...
March 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28404877/clinical-study-of-the-time-of-repeated-computed-tomography-and-replanning-for-patients-with-nasopharyngeal-carcinoma
#17
Xiujuan Gai, Yumei Wei, Hengmin Tao, Jian Zhu, Baosheng Li
PURPOSE: To study the necessity of repeat computed tomography (CT) scan and replanning and know a more accurate time using weekly kilovoltage cone beam computed tomography (kV-CBCT) scans for patients with nasopharyngeal carcinoma (NPC) during radiotherapy. METHODS AND MATERIALS: Thirteen NPC patients treated with IMRT were enrolled into this prospective study. Weekly pretreatment kV-CBCT scans were performed on the 1st, 6th, 11st, 16th, 21st and 26th radiation time, respectively...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28400867/evaluation-of-autoantibodies-in-patients-with-primary-and-secondary-sjogren-s-syndrome
#18
Ellen De Langhe, Xavier Bossuyt, Long Shen, Kishore Malyavantham, Julian L Ambrus, Lakshmanan Suresh
BACKGROUND: Antibodies to salivary gland protein 1 (SP1), carbonic anhydrase 6 (CA6) and parotid secretory protein (PSP) were discovered in an animal model of Sjogren's syndrome (SS). Their expression was noted in patients with SS, especially those with lower focus scores on lip biopsies and those with early disease lacking antibodies to Ro and La. OBJECTIVE: The current studies evaluated these autoantibodies in patients with long-standing SS expressing high levels of anti-Ro antibodies and in patients with Sjogren's syndrome secondary to systemic lupus erythematosus (SLE), systemic sclerosis (SSc) and mixed connective tissue disease (MCTD)...
2017: Open Rheumatology Journal
https://www.readbyqxmd.com/read/28397573/tumor-differentiation-as-a-prognostic-factor-for-major-salivary-gland-malignancies
#19
Hani M Rayess, Aaron Dezube, Ibrahim Bawab, S Naweed Raza, George H Yoo, Ho-Sheng Lin, John R Jacobs
Objective The effect of tumor differentiation on prognosis of major salivary gland malignancies is controversial. The aim of this study was to determine the effect of tumor differentiation on prognosis by stage in patients with major salivary gland malignancies and to analyze which patient factors are associated with tumor differentiation. Study Design and Setting Cross-sectional analysis of Surveillance, Epidemiology, and End Results (SEER) database. Subjects and Methods In total, 9810 patients who had a major salivary gland malignancy from 2004 to 2012 were identified using the SEER database...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28395960/parotid-swelling
#20
C A Righini, A Baguant, I Atallah
No abstract text is available yet for this article.
April 5, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
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