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https://www.readbyqxmd.com/read/28214203/prognostic-value-of-survivin-and-dna-topoisomerase-ii%C3%AE-in-diffuse-and-anaplastic-astrocytomas
#1
R K Varughese, A J Skjulsvik, S H Torp
Distinguishing WHO grade II astrocytomas from grade III is a difficult task. This study looks into the potential prognostic use of mitotic activity and the proliferation markers Ki67/MiB-1 (Ki67), survivin and DNA topoisomerase IIα (TIIα) in 59 WHO grade II diffuse astrocytomas (DA) and 33 WHO grade III anaplastic astrocytomas (AA), IDH1 R132H-mutated and not otherwise specified (NOS) by means of immunohistochemistry. All proliferation markers showed higher expression in AA compared with DA. Only Ki67 had significantly greater expression in astrocytomas, NOS vs...
January 21, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28193095/intraocular-ependymoma-with-blood-filled-spaces
#2
Aditi Dewan, Ravindra Kumar Saran, Smriti Nagpal Gupta, Deepanjali Arya, Ruchi Goel
Intraocular glial lesions are rare and include retinal gliosis, hamartomas, and astrocytomas and rarely ependymomas. Ependymomas are slow-growing glial tumors preferentially arising in the central nervous system (CNS), occasionally presenting at sites outside the CNS, with only 2 cases of primary retinal ependymoma reported till date. We report herein the third such case of a 20-year-old male who presented with a painful blind eye. The enucleated specimen showed presence of a glial tumor with cells arranged in sheets as well as few true rosettes and pseudo-rosettes and an immunohistochemical profile similar to a classical ependymoma at usual sites in the CNS...
February 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28188752/comparison-of-five-ki67-antibodies-regarding-reproducibility-and-capacity-to-predict-prognosis-in-breast-cancer-does-the-antibody-matter
#3
Balázs Ács, Janina Kulka, K Attila Kovács, Ivett Teleki, Anna-Mária Tőkés, Ágnes Meczker, Balázs Győrffy, Lilla Madaras, Tibor Krenács, A Marcell Szász
Although several antibodies are available for immunohistochemical (IHC) detection of Ki-67, even the most commonly used MIB-1 has not been validated yet. Our aim was to compare 5 commercially available antibodies for detection of Ki-67 in terms of agreement and their ability in predicting prognosis of breast cancer. Tissue microarrays were constructed from 378 breast cancer patients' representative formalin-fixed paraffin-embedded tumor blocks. Five antibodies were used to detect Ki-67 expression: MIB-1-using chromogenic detection and immunofluorescent labeled (IF) MIB1-, SP-6, 30-9, poly and B56...
February 8, 2017: Human Pathology
https://www.readbyqxmd.com/read/28105348/thyroid-like-low-grade-nasopharyngeal-papillary-adenocarcinoma-a-case-report
#4
Taro Horino, Osamu Ichii, Kazu Hamada-Ode, Tatsuki Matsumoto, Yoshiko Shimamura, Kosuke Inoue, Yoshio Terada
Thyroid-like low-grade nasopharyngeal papillary adenocarcinoma (TL-LGNPPA) is a rare neoplasm characterized by morphological analogy to papillary thyroid carcinoma and abnormal expression of thyroid transcription factor-1 (TTF-1). We herein report a rare case of TL-LGNPPA with a review of its clinical, morphological and immunohistochemical characteristics. The patient was a 25-year-old Japanese woman complaining of a 2-year history of fever of unknown origin. There were no remarkable physical findings and the laboratory tests, including C-reactive protein levels, were normal...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28103910/epithelioid-schwannoma-of-the-skin-displaying-unique-histopathological-features-a-teaching-case-giving-rise-to-diagnostic-difficulties-on-a-morphological-examination-of-a-resected-specimen-with-a-brief-literature-review
#5
REVIEW
Sohsuke Yamada, Mari Kirishima, Tsubasa Hiraki, Michiyo Higashi, Kazuhito Hatanaka, Akihide Tanimoto
BACKGROUND: Epithelioid schwannoma as a rare variant poses a challenge to all pathologists, as this uncommon entity is extremely difficult to conclusively diagnose by morphological analyses on a resected sample alone owing to its unique histopathological features. However, few papers have described the detailed clinicopathological characteristics of epithelioid schwannoma. CASE PRESENTATION: A 65-year-old female presented with a history of a flat and slightly elevated firm and tan plaque accompanied by occasional tenderness, measuring 10 × 8 mm, in the right joint of her hand 1 year before resection...
January 19, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28079349/interleukin-13-receptor-alpha-2-as-a-marker-of-poorer-prognosis-in-high-grade-astrocytomas
#6
Masahiko Wanibuchi, Yuko Kataoka-Sasaki, Masanori Sasaki, Shinichi Oka, Yayoi Otsuka, Miki Yamaguchi, Hirofumi Ohnishi, Shunya Ohtaki, Shouhei Noshiro, Satoshi Ookawa, Takeshi Mikami, Nobuhiro Mikuni, Osamu Honmou
BACKGROUND: Interleukin-13 receptor alpha 2 (IL13Rα2) is considered a prognostic marker for gliomas according to the World Health Organization (WHO) grade. However, the expression levels of the marker vary from case to case, even within the same grade. We investigated whether IL13Rα2 could serve as a predictor of poorer prognosis in gliomas. METHODS: mRNA expression of IL13Rα2 was measured using real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) in 52 formalin-fixed paraffin-embedded glioma samples (4 pilocytic astrocytomas, 9 diffuse astrocytomas, 12 anaplastic astrocytomas, and 27 glioblastomas, grade IV)...
January 12, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28035548/peribiliary-gland-dilatation-in-cirrhosis-relationship-with-liver-failure-and-stem-cell-proliferation-markers
#7
Nicolas Goossens, Romain Breguet, Claudio De Vito, Sylvain Terraz, Nathalie Lin-Marq, Emiliano Giostra, Laura Rubbia-Brandt, Laurent Spahr
BACKGROUND AND AIMS: Dilated peribiliary glands (PBG) in patients with cirrhosis are often an incidental finding although their significance and physiopathology remain unclear. We aimed to identify clinical factors associated with dilated PBG and to perform a detailed morphometric assessment of dilated PBG in cirrhotic patients undergoing liver transplantation (LT). METHODS: All consecutive cirrhotic patients undergoing LT at our institution between October 2006 and October 2011 were assessed for inclusion...
December 29, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28028908/allelic-loss-in-amalgam-associated-oral-lichenoid-lesions-compared-to-oral-lichen-planus-and-mucosa
#8
Leonardo Nogueira Rodrigues, Sílvia Ferreira Sousa, Raissa Cristina Costa Silva, Mauro Henrique Guimarães Abreu, Fábio Ramôa Pires, Ricardo Alves Mesquita, Luciana Bastos-Rodrigues, Luiz De Marco, Carolina Cavaliéri Gomes, Ricardo Santiago Gomez, Vanessa Fátima Bernardes
BACKGROUND: The amalgam-associated oral lichenoid lesion (AAOLL) shows clinical and histopathological features similar to oral lichen planus (OLP). Molecular researches to improve knowledge of pathogenesis and clinical behavior of AAOLL are still scarce. OBJECTIVE: We investigated for the first time the use of LOH as a molecular approach for genetic characterization of AAOLL in comparison with OLP and evaluated the cell proliferation index. MATERIALS AND METHODS: The sample comprised nine AAOLLs, 10 OLPs and eight NOMs matched by patients' gender and age...
December 27, 2016: Oral Diseases
https://www.readbyqxmd.com/read/28002641/nestin-phosphorylation-at-threonines-315-and-1299-correlates-with-proliferation-and-metastasis-of-human-pancreatic-cancer
#9
Yoko Matsuda, Toshiyuki Ishiwata, Hisashi Yoshimura, Kazuya Yamahatsu, Toshinari Minamoto, Tomio Arai
The neuroepithelial stem cell marker nestin is a cytoskeletal protein that regulates cell proliferation, invasion, and stemness in various tumors, including pancreatic tumors. In the present study, we examined the expression and roles of phosphorylated nestin in pancreatic cancer cells. Nestin phosphorylation at threonines 315 (Thr315) and 1299 (Thr1299) was observed during mitosis in human pancreatic cancer cells. Nestin phosphorylation was positively correlated with a cell proliferation marker, MIB-1 expression in human pancreatic cancer samples...
December 21, 2016: Cancer Science
https://www.readbyqxmd.com/read/27984121/an-s100p-positive-biliary-epithelial-field-is-a-pre-invasive-intraepithelial-neoplasm-in-nodular-sclerosing-cholangiocarcinoma
#10
Yasuni Nakanuma, Tsuneyuki Uchida, Yasunori Sato, Katsuhiko Uesaka
Nodular sclerosing cholangiocarcinoma (NS-CCA) is a common CCA of the intrahepatic large, perihilar and distal bile ducts. Intraepithelial biliary neoplasms, such as the mucosal extension of carcinoma and pre-invasive neoplastic lesions (i.e. biliary intraepithelial neoplasia [BilIN]) reportedly occur in the bile ducts around CCA. In the present study, we collectively refer to these intraepithelial lesions as "intraepithelial neoplasms of the bile duct (IENBs)". We examined the IENBs in 57 surgically resected cases of NS-CCA...
October 28, 2016: Human Pathology
https://www.readbyqxmd.com/read/27888490/large-cell-neuroendocrine-carcinoma-of-the-common-bile-duct-a-case-report-and-a-review-of-literature
#11
Makoto Murakami, Kanji Katayama, Shigeru Kato, Daisuke Fujimoto, Mitsuhiro Morikawa, Kenji Koneri, Yasuo Hirono, Takanori Goi
BACKGROUND: Large-cell neuroendocrine carcinoma (LCNEC) of the bile duct is extremely rare and is a high-grade type of neuroendocrine tumor with an aggressive clinical course. Here, we report a case of LCNEC of the extrahepatic bile duct. CASE PRESENTATION: An 80-year-old man presented with severe jaundice. Endoscopic retrograde cholangiography and enhanced computed tomography revealed complete obstruction of the common bile duct (CBD) by a dense tumor measuring 1...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27868157/mcm7-expression-is-a-promising-predictor-of-recurrence-in-patients-surgically-resected-for-meningiomas
#12
Theo L Winther, Sverre H Torp
Patients with high risk of recurrence after meningioma resection might benefit from adjuvant radiation therapy and closer clinical follow-up. While the World Health Organization (WHO) classification and the MIB-1 biomarker are applied in the clinical practice to identify these patients, the reliability of these methods is questionable. To improve the prediction of tumor recurrence, this study evaluated and compared the prognostic usefulness of the biomarker MCM7 with the conventional mitotic index and the MIB-1 biomarker...
November 21, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27867912/central-neurocytoma-a-review-of-clinical-management-and-histopathologic-features
#13
REVIEW
Seung J Lee, Timothy T Bui, Cheng Hao Jacky Chen, Carlito Lagman, Lawrance K Chung, Sabrin Sidhu, David J Seo, William H Yong, Todd L Siegal, Minsu Kim, Isaac Yang
Central neurocytoma (CN) is a rare, benign brain tumor often located in the lateral ventricles. CN may cause obstructive hydrocephalus and manifest as signs of increased intracranial pressure. The goal of treatment for CN is a gross total resection (GTR), which often yields excellent prognosis with a very high rate of tumor control and survival. Adjuvant radiosurgery and radiotherapy may be considered to improve tumor control when GTR cannot be achieved. Chemotherapy is also not considered a primary treatment, but has been used as a salvage therapy...
October 2016: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/27863477/keratin-19-as-a-key-molecule-in-progression-of-human-hepatocellular-carcinomas-through-invasion-and-angiogenesis
#14
Masato Takano, Keiji Shimada, Tomomi Fujii, Kohei Morita, Maiko Takeda, Yoshiyuki Nakajima, Akitaka Nonomura, Noboru Konishi, Chiho Obayashi
BACKGROUND: Keratin (K) 19-positive hepatocellular carcinoma (HCC) is well known to have a higher malignant potential than K19-negative HCC: However, the molecular mechanisms involved in K19-mediated progression of HCC remain unclear. We attempted to clarify whether K19 directly affects cell survival and invasiveness in association with cellular senescence or epithelial-mesenchymal transition (EMT) in K19-positive HCC. METHODS: K19 expression was analysed in 136 HCC surgical specimens...
November 18, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27828691/long-term-complete-remission-of-crooke-s-corticotropinoma-after-temozolomide-treatment
#15
Maria Kurowska, Jerzy S Tarach, Joanna Malicka, Grzegorz Zieliński, Maria Maksymowicz, Piotr Denew
INTRODUCTION: Crooke's corticotropinomas are the unique cause of Cushing's disease. The majority of them are aggressive macroadenomas, refractory to conventional therapy, with a high recurrence rate. The aim of the study was the presentation, in relation to data from the literature, of a case of a patient with ACTH-dependent Cushing's syndrome caused by recurrent Crooke's cells corticotropinoma, who achieved 33-month complete remission after treatment with temozolomide (TMZ). CASE REPORT: A 54-year-old man was diagnosed with Cushing's disease five years earlier on the basis of a typical clinical picture and hormonal tests...
2016: Endokrynologia Polska
https://www.readbyqxmd.com/read/27787647/pediatric-intracranial-clear-cell-meningioma-a-clinicopathological-study-of-seven-cases-and-literature-review
#16
Hao Li, Meng Zhao, Yuming Jiao, Zhicen Li, Ji Ma, Shuo Wang, Yong Cao, Jizong Zhao
BACKGROUND: In this study, we reported seven cases of pediatric intracranial clear cell meningiomas (CCMs) in our institution and reviewed the relevant literature to investigate the clinicopathological characteristics, treatment options, and prognosis of these rare tumors. METHODS: From January 2005 to June 2016, we retrospectively reviewed seven pediatric intracranial CCMs in terms of their clinical data, preoperative MRI features, and prognosis. Moreover, a critical review of the English language literature was also conducted...
October 27, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27765563/predictors-of-aggressive-clinical-phenotype-among-immunohistochemically-confirmed-atypical-adenomas
#17
Hasan A Zaidi, David J Cote, Ian F Dunn, Edward R Laws
Despite formal pathological criteria, not all atypical pituitary adenomas display clinically aggressive behavior. We set out to determine which factors predict a clinically aggressive phenotype among a cohort of atypical pituitary adenomas. Medical records were retrospectively reviewed from April 2008 to July 2015. Of 569 pituitary adenomas, 47 (8.3%) patients were surgically treated for atypical adenomas as defined by the WHO criteria. Clinically aggressive adenomas were defined as occurring in those patients who necessitated additional therapeutic intervention after the index (first) surgery, including additional surgery, medical therapy, or radiosurgery...
December 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27760993/long-term-surgical-outcome-and-prognostic-factors-of-atypical-and-malignant-meningiomas
#18
Yu-Chi Wang, Chi-Cheng Chuang, Kuo-Chen Wei, Cheng-Nen Chang, Shih-Tseng Lee, Chieh-Tsai Wu, Yung-Hsin Hsu, Tzu-Kan Lin, Peng-Wei Hsu, Yin-Cheng Huang, Chen-Kan Tseng, Chun-Chieh Wang, Yao-Liang Chen, Pin-Yuan Chen
Atypical and malignant meningiomas are rare. Our aim was to examine the treatment outcomes following surgical resection, and analyze associations between clinical characteristics and overall survival (OS) or relapse free survival (RFS). 102 patients with atypical or malignant meningiomas underwent microsurgical resection between June 2001 and November 2009 were analyzed retrospectively. We compared demographics, clinical characteristics, treatment, and complications. The five-year and ten-year overall survival rates were 93...
October 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27734275/apparent-diffusion-coefficient-and-pituitary-macroadenomas-pre-operative-assessment-of-tumor-atypia
#19
Benita Tamrazi, Melike Pekmezci, Mariam Aboian, Tarik Tihan, Christine M Glastonbury
RATIONALE AND OBJECTIVES: Pituitary macroadenomas are predominantly benign intracranial neoplasms that can be locally aggressive with invasion of adjacent structures. Biomarkers of aggressive behavior have been identified in the pathology literature, including the proliferative marker MIB-1. In the radiology literature, diffusion weighted imaging and low ADC values provide similar markers of aggressive behavior in brain tumors. The purpose of this study was to determine if there is a correlation between ADC and MIB-1 in pituitary macroadenomas...
October 12, 2016: Pituitary
https://www.readbyqxmd.com/read/27729431/prognostic-relevance-of-epithelial-mesenchymal-transition-and-proliferation-in-surgically-treated-primary-parotid-gland-cancer
#20
Alina Busch, Larissa Bauer, Eva Wardelmann, Claudia Rudack, Inga Grünewald, Markus Stenner
AIMS: Cancer of the major salivary glands comprises a morphologically diverse group of rare tumours of largely unknown cause. Epithelial-mesenchymal transition (EMT) has been shown to play a significant prognostic role in various human cancers. The aim was to assess the expression of EMT markers in different histological subtypes of parotid gland cancer (PGC) and analyse their prognostic value. METHODS: We examined 94 PGC samples (13 histological subtypes) for the expression of MIB-1, epithelial cadherin (E-cadherin), β-catenin, vimentin and cytokeratin 8/18 (CK8/18) by means of immunohistochemistry...
October 11, 2016: Journal of Clinical Pathology
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