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https://www.readbyqxmd.com/read/28445692/perspectives-on-testicular-sex-cord-stromal-tumors-and-those-composed-of-both-germ-cells-and-sex-cord-stromal-derivatives-with-a-comparison-to-corresponding-ovarian-neoplasms
#1
Lawrence M Roth, Bingjian Lyu, Liang Cheng
Sex cord-stromal tumors (SCSTs) are the second most frequent category of testicular neoplasms, accounting for approximately 2-5% of cases. Both genetic and epigenetic factors account for the differences in frequency and histologic composition between testicular and ovarian SCSTs. For example, large cell calcifying Sertoli cell tumor and intratubular large cell hyalinizing Sertoli cell neoplasia occur in the testis but have not been described in the ovary. In this article, we discuss recently described diagnostic entities as well as inconsistencies in nomenclature used in the recent World Health Organization classifications of SCSTs in the testis and ovary...
April 23, 2017: Human Pathology
https://www.readbyqxmd.com/read/28439685/histological-and-ultrastructural-study-of-myxobolus-mugchelo-parenzan-1966-with-initial-histopathology-survey-of-the-liza-ramada-host-intestine
#2
Mykola Ovcharenko, Bahram Sayyaf Dezfuli, Giuseppe Castaldelli, Mattia Lanzoni, Luisa Giari
This paper provides histological and ultrastructural data on Myxobolus mugchelo (Myxozoa), a parasite of the intestinal wall of thinlip mullet Liza ramada from the Comacchio lagoons (Northern Adriatic Sea, Italy). About 80% of the examined mullets were infected with this myxozoan. In histological sections, the plasmodia appeared rounded to ovoid and spindle shaped, measured 181.61 ± 97 × 122.79 ± 53.16 μm (mean ± standard deviation, SD) in size. Early sporogenic plasmodia were located primarily in the muscle layer where no pronounced inflammatory response was detected...
April 24, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28435998/a-6-year-old-boy-with-wilson-disease-a-diagnostic-dilemma
#3
Ramaswamy Ganesh, N Suresh, T Vasanthi, Malathi Sathiyasekaran, R Thulasiraman
A 6-year-old boy presented with 2 months history of progressive abdominal distension and jaundice. He was deeply icteric with ascites, hepatosplenomegaly, hyperbilirubinemia, raised transaminases, and coagulopathy. Viral markers and slit lamp examination for Kayser-Fleischer ring were negative. Serum ceruloplasmin and 24-h urinary copper post-D-pencillamine challenge were normal. Anti-smooth muscle antibody was positive 1:20, and liver biopsy showed micronodular cirrhosis with abundant Mallory hyaline and stainable copper deposits...
April 24, 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28434238/the-characteristics-and-long-term-course-of-epilepsy-in-lipoid-proteinosis-a-spectrum-from-mild-to-severe-seizures-in-relation-to-ecm1-mutations
#4
Emel Oguz Akarsu, Firdevs Dinçsoy Bir, Can Baykal, Volkan Taşdemir, Bülent Kara, Nerses Bebek, Candan Gürses, Oya Uyguner, Betül Baykan
Lipoid proteinosis (LP) is a rare autosomal recessive disease characterized by deposition of hyaline material in skin and mucosae. Epilepsy, as an extracutaneous manifestation associated with typical mesial temporal calcifications, has already been identified, but its characteristics and long-term prognosis have not been thoroughly investigated. We included 7 consecutive patients with LP with typical intracranial calcifications out of 16 patients with ECM1 mutations and investigated the semiologic features, ictal and interictal EEG findings, and long-term prognosis of epilepsy in this genodermatosis...
April 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28433112/wilson-disease-liver-pathology
#5
Maciej Pronicki
The liver in Wilson disease may demonstrate a wide range of damage patterns. Some patients may present almost no detectable microscopic pathology, while others display lesions consistent with fulminant hepatitis or acute liver failure. Most liver biopsy specimens show moderate to severe steatosis, variable degree of portal and/or lobular inflammation, and fibrosis eventually progressing to cirrhosis. Additional findings include liver cell degeneration and ballooning, Mallory hyaline bodies, liver cell necrosis, and glycogenation of periportal hepatocytic nuclei...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28424236/hyalinizing-trabecular-tumour-of-the-thyroid-fine-needle-aspiration-cytological-diagnosis-and-correlation-with-histology
#6
REVIEW
Chiara Saglietti, Simonetta Piana, Stefano La Rosa, Massimo Bongiovanni
Hyalinizing trabecular tumour (HTT) is a rare thyroid neoplasm of follicular cell origin characterised by a trabecular growth pattern and prominent intratrabecular and intertrabecular hyalinisation. These peculiar histological features allow the prompt recognition of this neoplasm in surgical specimens. However, cytological diagnosis of HTT remains elusive and misleading because of overlapping characteristics with other thyroid tumours, particularly papillary thyroid carcinoma (PTC), medullary thyroid carcinoma (MTC) and the newly described non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP)...
April 19, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28422969/a-new-species-of-tometes-valenciennes-1850-characiformes-serrasalmidae-from-tocantins-araguaia-river-basin-based-on-integrative-analysis-of-molecular-and-morphological-data
#7
Marcelo C Andrade, Valéria N Machado, Michel Jégu, Izeni P Farias, Tommaso Giarrizzo
A new large serrasalmid species of Tometes is described from the Tocantins-Araguaia River Basin. Tometes siderocarajensis sp. nov. is currently found in the rapids of the Itacaiúnas River Basin, and formerly inhabited the lower Tocantins River. The new species can be distinguished from all congeners, except from T. ancylorhynchus, by the presence of lateral space between 1st and 2nd premaxillary teeth, and by the absence of lateral cusps in these two teeth. However, T. siderocarajensis sp. nov. can be differentiated from syntopic congener T...
2017: PloS One
https://www.readbyqxmd.com/read/28418812/phellinopsis-lonicericola-and-p-tibetica-spp-nov-hymenochaetales-basidiomycota-from-tibet-with-a-key-to-worldwide-species
#8
Li-Wei Zhou, Jie Song
Phellinopsis (Hymenochaetaceae) was recently segregated from Phellinus. Phellinopsis differs from other genera segregated from Phellinus in a combination of hymenial setae, if present, mostly originating from tramal hyphae and hyaline basidiospores becoming pale yellowish with age. In this study, two new species of Phellinopsis, P. lonicericola and P. tibetica, from Tibet in southwestern China were described and illustrated. Morphological data and sequences of the nuc rDNA ITS1-5.8S-ITS2 region (internal transcribed spacer [ITS] barcode) support the recognition of these taxa as distinct...
March 3, 2017: Mycologia
https://www.readbyqxmd.com/read/28413775/an-interesting-case-of-mycoplasma-pneumonia-associated-multisystem-involvement-and-diffuse-alveolar-hemorrhage
#9
Rashmi Mishra, Edison Cano, Sindhaghatta Venkatram, Gilda Diaz-Fuentes
Severe mycoplasma pneumonia is a rare entity with only 0.5-2% of cases having a fulminant course. We present a 74-year-old woman with hypertension, diabetes mellitus and remote history of marginal zone B-cell lymphoma admitted with abdominal pain and diarrhea of 1-2 days associated with body-aches, dyspnea, dry cough and weight loss for 2-3 weeks. On physical exam, she was febrile, tachypneic, tachycardic and hypoxic on room air. Chest examination revealed diffuse crackles and end-expiratory wheezes. Laboratory tests showed anemia, acute-on-chronic kidney injury and hyaline casts and epithelial cells in the urine analysis...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28409726/the-suboccipital-ligament
#10
Kelsey Alabaster, M Fred Bugg, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE A fibrous structure located dorsal to the dura at the posterior craniocervical junction stretches horizontally between the bilateral occipital condyles and the upper borders of the C-1 laminae. Partially covered by the occipital bone, this structure is always encountered when the bone is removed from the foramen magnum rim during approaches to the posterior cranial fossa. Although known to surgeons, this structure has not been defined, studied, or named. The most appropriate name for this structure is "the suboccipital ligament," and a detailed rationale for this name is provided...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28409101/microdrilling-surgery-augmented-with-intra-articular-bone-marrow-aspirate-concentrate-platelet-rich-plasma-and-hyaluronic-acid-a-technique-for-cartilage-repair-in-the-knee
#11
Joseph E Broyles, M Adaire O'Brien, M Patrick Stagg
The ideal treatment of large full-thickness chondral lesions in the knee, especially "kissing lesions" and osteoarthritis, has not been determined. Microdrilling surgery augmented with injections of peripheral blood stem cells and hyaluronic acid has been used to treat patients with a wide range of articular cartilage disease including patients with bipolar lesions and joint space narrowing. Excellent results in this difficult patient population have been reported, and second-look biopsy has shown repair tissue very similar to native hyaline cartilage...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28408248/extraforaminal-compression-of-the-l5-nerve-an-anatomical-study-with-application-to-failed-posterior-decompressive-procedures
#12
R Shane Tubbs, Joe Iwanaga, Islam Aly, Marc D Moisi, David R Hanscom, Jens R Chapman, Marios Loukas, Rod J Oskouian
This anatomical study was performed to elucidate the pertinent foraminal and lateral L5 nerve anatomy to enhance our understanding of possible neurologic causes of failed decompression surgery. Persistent extraforaminal L5 nerve compression is a possible cause of persistent symptoms following lumbosacral surgery. The amount of extraforaminal space for the L5 ventral ramus was examined in fifty adult human skeletons (100 sides). Based on morphology, the specimens were then categorized (types I-IV) on the basis of the bony space available for the nerve at this location...
April 10, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28407736/large-enchondroma-of-the-thoracic-spine-a-rare-case-report-and-review-of-the-literature
#13
Jing Guo, Ju-Zhou Gao, Lian-Jin Guo, Zhi-Xun Yin, Er-Xing He
BACKGROUND: Enchondroma, a subtype of chondroma, originates from the medullary cavity of the bone and produces an expansile growth pattern. Enchondroma located in the spine is rare and a few cases of large thoracic enchondroma have been reported. The authors document a rare case of large enchondroma in the thoracic spine of a 49-year-old woman, and discuss its clinical, radiological and histopathological characteristics. CASE PRESENTATION: The patient presented with rapidly progressive and severe pain on her upper back...
April 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28403904/pre-existing-chronic-interstitial-pneumonia-is-a-poor-prognostic-factor-of-goodpasture-s-syndrome-a-case-report-and-review-of-the-literature
#14
Hiroki Tashiro, Koichiro Takahashi, Yuki Ikeda, Saori Uchiumi, Makoto Fukuda, Miyazono Motoaki, Shinya Kimura, Naoko Sueoka-Aragane
BACKGROUND: Goodpasture's syndrome is a rare disease that is characterized by rapidly progressive glomerulonephritis and diffuse alveolar hemorrhage. CASE PRESENTATION: A 71-year-old Japanese man who had chronic interstitial pneumonia was diagnosed as having Goodpasture's syndrome. Both anti-glomerular basement membrane antibody and myeloperoxidase anti-neutrophil cytoplasmic antibody were increased. Despite intensive treatments, including mechanical ventilation, he died from respiratory failure...
April 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28402795/global-diversity-and-phylogeny-of-onnia-hymenochaetaceae-species-on-gymnosperms
#15
Xiao-Hong Ji, Shuang-Hui He, Jia-Jia Chen, Jing Si, Fang Wu, Li-Wei Zhou, Josef Vlasák, Xue-Mei Tian, Yu-Cheng Dai
Onnia includes white rotting polypores with annual basidiocarps, a duplex context, monomitic hyphal structure, hymenial setae, and hyaline, thin-walled, smooth basidiospores. Specimens of Onnia, originating mainly from East Asia, Europe, and North America, were studied using both morphology and phylogenetic analyses. Our concatenated data set was derived from 25 collections and included (i) 25 nuc rDNA internal transcribed spacer region sequences (ITS1-5.8S-ITS2 = ITS), 17 generated in this study; and (ii) 14 nuc rDNA 28S rDNA sequences, including the D1-D2 domains, 11 of them generated in this study...
2017: Mycologia
https://www.readbyqxmd.com/read/28400645/juvenile-hyaline-fibromatosis-a-10-year-follow-up
#16
Esra Baltacioglu, Esra Guzeldemir, Erkan Sukuroglu, Kadriye Yildiz, Pinar Yuva, Güven Aydin, Naci Karacal
Juvenile hyaline fibromatosis (JHF) is a rare hereditary disease with an autosomal recessive transmission. JHF is characterized by papulonodular skin lesions, osteolytic bone lesions, flexural joint contractures, and gingival hyperplasia and usually diagnosed in infancy or early childhood. JHF is thought to be a disorder of collagen metabolism and characterized by homogenous amorphous eosinophilic material and fibrous tissue. We report the case of a 14-year-old male child with multiple papulonodular skin lesions, progressive flexion contractures of joints, and severe gingival hyperplasia, with a 10-year follow-up...
March 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28398918/histological-features-of-methylene-blue-induced-phototoxicity-administered-in-the-context-of-parathyroid-surgery
#17
Ciara A Maguire, Anup Sharma, Lida Alarcon, Lorrette Ffolkes, Malgorzata Kurzepa, Lucy Ostlere, Venura Samarasinghe, Manuraj Singh
Methylene blue is a chromophore dye known for its photosensitizing properties. It is also administered intravenously as a tracer in parathyroid surgery to identify abnormal glands. We describe 2 cases of acute methylene blue-induced phototoxicity in patients who underwent parathyroidectomy. Both patients developed an acute vesiculopustular inflammatory rash on the anterior neck corresponding to the site exposed intraoperatively to overhanging surgical lights. One of the patients also developed a bulla on her finger at the site of attachment of the oxygen probe...
March 16, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28397604/cresyl-violet-stains-mast-cells-selectively-its-application-to-counterstaining-in-immunohistochemistry
#18
Noriyuki Takahashi, Wataru Tarumi, Naomi Hamada, Bunpei Ishizuka, Masanori T Itoh
The thiazine dye toluidine blue (TB) is well known to stain mast cells and hyaline cartilage metachromatically, and thus is mostly often used for their identification. However, TB is not suitable for counterstaining in immunohistochemistry, because of its high-background staining in the cytoplasm of other cell species and in extracellular structures. To expand the knowledge about dyestuffs staining mast cells in consideration with their usage in immunohistochemistry, we determined the stainability of several thiazines and oxazines, which are structurally related compounds to TB, using sections of mast cell-containing tissues...
April 2017: Zoological Science
https://www.readbyqxmd.com/read/28393539/autologous-bone-marrow-cell-stimulation-and-allogenic-chondrocyte-implantation-for-the-repair-of-full-thickness-articular-cartilage-defects-in-a-rabbit-model
#19
Sungwook Choi, Gyeong Min Kim, Young Hee Maeng, Hyunseong Kang, Chen Tai Teong, Emily E Lee, Seung Jin Yoo, Darryl D Dlima, Myung Ku Kim
OBJECTIVE: The aim of this study was to evaluate the results of autologous bone marrow cell stimulation and allogenic chondrocyte implantation using 3-dimensional gel-type fibrin matrix in an animal model. DESIGN: Eighteen rabbits were divided into 2 treatment groups. One group was treated with a microfracture and covering of it with gel-type fibrin (AutoBMS; n = 9), and the other group was treated with allogenic chondrocytes mixed gel-type fibrin at the cartilage defect (AlloCI; n = 9)...
April 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28392706/pancreatic-solitary-fibrous-tumor-in-a-toddler-managed-by-pancreaticoduodenectomy-a-case-report-and-review-of-the-literature
#20
Qingfeng Sheng, Weijue Xu, Jiangbin Liu, Baiyong Shen, Xiaxing Deng, Yibo Wu, Wei Wu, Shenghua Yu, Xueli Wang, Zhibao Lv
Solitary fibrous tumor (SFT) of the pancreas is rare, with 15 adult cases reported in the English literature. We described a 14-month-old boy who presented with obstructive jaundice. Dominantly elevated serum CA19-9 was detected. Imaging studies revealed a well-circumscribed, solid mass in the pancreatic head. A pancreaticoduodenectomy (child procedure) was performed using Shen's anastomosis technique. After resection of the tumor, liver function and serum tumor markers normalized and clinical signs receded...
2017: OncoTargets and Therapy
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