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https://www.readbyqxmd.com/read/29200961/posterior-cerebral-fossa-medulloepithelioma-report-of-a-case
#1
Nezha Oumghar, Fatima Ezzahra Hazmiri, Abdelhamid El Omrani, Hanane Rais, Mouna Khouchani
Background: Medulloepithelioma is a rare primitive neuroectodermal tumor of the central nervous system, usually developing in childhood. Due to its rarity, the optimal management is still unknown. The prognosis is poor, especially when resection is incomplete. Adjuvant radiochemotherapy is often indicated. Case presentation: We report a rare case of infratentorial medulloepithelioma in a 3 year old girl. She presented symptoms of increased intracranial pressure...
2017: BMC Clinical Pathology
https://www.readbyqxmd.com/read/29200888/prognostic-and-clinicopathological-value-of-ki-67-mib-1-expression-in-renal-cell-carcinoma-a-meta-analysis-based-on-4579-individuals
#2
Zhun Wang, Hui Xie, Linpei Guo, Qiliang Cai, Zhiqun Shang, Ning Jiang, Yuanjie Niu
Background: Previous studies have investigated the prognostic significance of Ki-67/MIB-1 expression in renal cell carcinoma (RCC), however, the reports are controversial and inconsistent. This study aimed to investigate Ki-67/MIB-1 expression in RCC and its correlation with prognosis and clinicopathological features. Methods: We searched relevant studies that reported associations between Ki-67/MIB-1 expression and prognosis in RCC from PubMed, Embase, Web of Science, and Cochrane Library studies published until April 14, 2017...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/29199205/re-evaluation-of-mib-1-immunostaining-for-diagnosing-hyalinizing-trabecular-tumour-of-the-thyroid-semi-automated-techniques-with-manual-antigen-retrieval-are-more-accurate-than-fully-automated-techniques
#3
Nami Takada, Mitsuyoshi Hirokawa, Chiho Ohbayashi, Takeshi Nishikawa, Tomoo Itoh, Naoko Imagawa, Tetsunari Oyama, Tadashi Handa, Tadashi Hasegawa, Shintaro Sugita, Akiko Murata, Akira Miyauchi
Hyalinizing trabecular tumour (HTT) immunohistochemically shows cell membranous immunoreactivity for MIB-1. This aberrant immunoreactivity is an important factor for the diagnosis of HTT. However, fully automated stainers frequently fail to confirm the immunoreactivity. The aim of this study is to investigate the cause of false negative cell membranous immunoreactivity for MIB-1 in HTT using fully automated stainers, to determine potential reasons for the problem, and to establish methods confirming cell membranous immunoreactivity for MIB-1 in HTT...
December 2, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/29170844/early-recognition-of-aggressive-pituitary-adenomas-a-single-centre-experience
#4
Filippo Ceccato, Daniela Regazzo, Mattia Barbot, Luca Denaro, Enzo Emanuelli, Daniele Borsetto, Giuseppe Rolma, Luigi Alessio, Marina Paola Gardiman, Giuseppe Lombardi, Nora Albiger, Domenico D'Avella, Carla Scaroni
BACKGROUND: Pituitary adenomas are usually considered benign tumours, although some of them can exhibit an aggressive behaviour. Patients with clinically aggressive pituitary adenomas are frequently diagnosed with larger masses, and may present an earlier recurrence (or persistence) after surgery. Our aim was to characterise the clinical, histopathological and radiological features of patients with aggressive pituitary adenoma, in order to correlate their clinical behaviour with the response to treatment plan...
November 23, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29168109/a-case-of-glomangiopericytoma-at-the-nasal-septum
#5
Takashi Anzai, Tsuyoshi Saito, Sho Tsuyama, Miri Toh, Katsuhisa Ikeda, Shin Ito
Glomangiopericytoma (GPC) is a rare sinonasal perivascular tumor that accounts for < 0.5-1% of all sinonasal tumors. GPC is categorized as a low-grade neoplasm with borderline malignancy and a tendency of local recurrence. GPC is a rare mesenchymal neoplasm characterized by the perivascular proliferation of tumor cells, and it requires being distinguished from solitary fibrous tumors. Here, we report a case of GPC in a 68-year-old male patient who presented at the emergency room of our hospital with a complaint of sudden epistaxis...
November 22, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/29158006/vdr-independent-induction-of-acid-sphingomyelinase-by-1-23-oh-2-d3-in-gastric-cancer-cells-impact-on-apoptosis-and-cell-morphology
#6
Elisabetta Albi, Samuela Cataldi, Ivana Ferri, Angelo Sidoni, Giovanna Traina, Katia Fettucciari, Francesco Saverio Ambesi-Impiombato, Andrea Lazzarini, Francesco Curcio, Maria Rachele Ceccarini, Tommaso Beccari, Michela Codini
1 alpha,25-dihydroxyvitamin D3 (1,23(OH)2 D3) is known to play a dual role in cancer, by promoting or inhibiting carcinogenesis via 1,23(OH)2 D3 receptor (VDR) and phosphatase and tensin homolog deleted on chromosome 10 (PTEN). Fok I polymorphism of VDR may indirectly influence the receptor levels through autoregulation. The involvement of neutral sphingomyelinase in the non-classic VDR-mediated genomic pathway response to 1,23(OH)2 D3 treatment has been reported. Until now no information were reported about Fok I polymorphism of VDR in NCI-N87 human gastric cancer cells and the relation between acid sphingomyelinase and 1,23(OH)2 D3...
November 17, 2017: Biochimie
https://www.readbyqxmd.com/read/29147864/impact-of-who-2016-update-of-brain-tumor-classification-molecular-markers-and-clinical-outcomes-in-pleomorphic-xanthoastrocytoma
#7
Raees Tonse, Tejpal Gupta, Sridhar Epari, Jayant Goda Shastri, Mamta Gurav, Nazia Bano, Rakesh Jalali
We present outcomes of pleomorphic xanthoastrocytoma (PXA) and correlate the impact of clinical, pathologic and molecular markers. Between 2006 and 2016, 37 patients with histologically verified PXA form the study cohort. All underwent maximal safe resection; those who had good resection and young age were observed. Adjuvant radiotherapy was given in patients with some atypical features such as high MIB-1 index (> 5%), residual disease or at recurrence. Patients with anaplastic PXA were administered adjuvant radiotherapy and systemic therapy...
November 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29138702/a-case-of-c5-vertebral-chordoma-in-a-73-year-old-patient-with-more-than-8-years-of-follow-up-after-total-piecemeal-spondylectomy
#8
Keigo Tanaka, Harutoshi Sakakima, Kazutoshi Hida, Kanako Hatanaka, Kosei Ijiri
Chordoma arising from the cervical spine is rare and the traditional long-term prognosis is typically poor. Total en bloc spondylectomy with a wide margin is generally accepted to be the most appropriate management for thoracic and lumbar malignant tumors. However, this method is still challenging for the cervical spine because of the proximity of the tumor to the vertebral arteries and neural elements. Here, we report a 73-year-old man with a C5 vertebral chordoma treated with total piecemeal spondylectomy...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29134440/ki67-labeling-index-assessment-and-prognostic-role-in-gastroenteropancreatic-neuroendocrine-neoplasms
#9
REVIEW
Günter Klöppel, Stefano La Rosa
In 1983, a monoclonal antibody, Ki67, was generated, that labeled the nuclei of proliferating non-neoplastic and neoplastic cells. The name Ki67 derived from the city of Kiel (Ki) where the antibody was produced in the university department of pathology and refers to the number of the original clone (67). Systematic assessment of the proliferative activity of tumors using Ki67 started in the 1990s, when Ki67, which only worked on frozen tissue, was complemented by the antibody MIB-1 that also worked in formalin-fixed tissues...
November 13, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29098034/asa404-a-vascular-disrupting-agent-as-an-experimental-treatment-approach-for-brain-tumors
#10
Oliver Bähr, Stefanie Gross, Patrick N Harter, Elmar Kirches, Christian Mawrin, Joachim P Steinbach, Michel Mittelbronn
Malignant brain tumors, including gliomas, brain metastases and anaplastic meningiomas, are associated with poor prognosis, and represent an unmet medical need. ASA404 (DMXAA), a vascular disrupting agent, has demonstrated promising results in several preclinical tumor models and early phase clinical trials. However, two phase III trials in non-small cell lung cancer reported insufficient results. The aim of the present study was to determine the effects of ASA404 on brain tumors. The effects of ASA404 were evaluated in vitro and in vivo using subcutaneous, and orthotopical models for malignant glioma (U-87, LN-229, U-251, LN-308 and Tu-2449), brain metastasis (HT-29) and malignant meningioma (IOMM-Lee)...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29097878/high-grade-myofibroblastic-sarcoma-in-the-liver-a-case-report
#11
Jun Wen, Wei Zhao, Chuan Li, Jun-Yi Shen, Tian-Fu Wen
Only two cases of myofibroblastic sarcoma in the liver have been reported in the literature. Here, we report the case of a male patient with high-grade myofibroblastic sarcoma mimicking echinococcosis in the liver. The 25-year-old male patient complained of right upper quadrant swelling pain for one week and was initially diagnosed with echinococcosis. He was then scheduled for an exploratory laparotomy. During the operation, a huge mass exceeding 16 cm in diameter was found to occupy nearly the entire right trisegment of the liver, with a clear boundary and a round shape, and the mass was resected by right hepatic trisegmentectomy...
October 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29076783/systematic-histopathological-analysis-of-different-5-aminolevulinic-acid-induced-fluorescence-levels-in-newly-diagnosed-glioblastomas
#12
Barbara Kiesel, Mario Mischkulnig, Adelheid Woehrer, Mauricio Martinez-Moreno, Matthias Millesi, Ammar Mallouhi, Thomas Czech, Matthias Preusser, Johannes A Hainfellner, Stefan Wolfsberger, Engelbert Knosp, Georg Widhalm
OBJECTIVE Glioblastoma (GBM) is characterized by distinct intratumoral histopathological heterogeneity with regard to variable tumor morphology, cell proliferation, and microvascularity. Maximum resection of a GBM results in an improved prognosis and thus represents the aim of surgery in the majority of cases. Fluorescence-guided surgery using 5-aminolevulinic acid (5-ALA) is currently widely applied for improved intraoperative tumor visualization in patients with a GBM. Three intratumoral fluorescence levels (i...
October 27, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29076075/proximal-type-epithelioid-sarcoma-in-skull-base-a-pathological-diagnosis-challenge-with-other-intracranial-tumors
#13
Duan Zejun, Yao Kun, Lu Dehong, Qi Xueling
Proximal-type ES (PES) is a rare and aggressive sarcoma originated from soft tissues with uncertain differentiation. It mainly affects middle-aged patients and often locates in proximal extremity and deep-seated tissues. Only one case of PES located in the skull base has been reported to date. Herein, we report two cases of PES occurred in the middle cranial fossa in two middle-aged Chinese women. Microscopically, the tumors were consisted of epithelial-like cells with or without rhabdoid cells. And frequent mitotic activity and coagulation necrosis were present...
October 26, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28984304/clinicopathological-and-genomic-analysis-of-double-hit-follicular-lymphoma-comparison-with-high-grade-b-cell-lymphoma-with-myc-and-bcl2-and-or-bcl6-rearrangements
#14
Masashi Miyaoka, Yara Y Kikuti, Joaquim Carreras, Haruka Ikoma, Shinichiro Hiraiwa, Akifumi Ichiki, Minoru Kojima, Kiyoshi Ando, Tomoyuki Yokose, Rika Sakai, Masahiro Hoshikawa, Naoto Tomita, Ikuo Miura, Katsuyoshi Takata, Tadashi Yoshino, Jun Takizawa, Silvia Bea, Elias Campo, Naoya Nakamura
Most high-grade B-cell lymphomas with MYC and BCL2 and/or BCL6 rearrangements are aggressive B-cell lymphomas. Occasional double-hit follicular lymphomas have been described but the clinicopathological features of these tumors are not well known. To clarify the characteristics of double-hit follicular lymphomas, we analyzed 10 cases of double-hit follicular lymphomas and 15 cases of high-grade B-cell lymphomas with MYC and BCL2 and/or BCL6 rearrangements for clinicopathological and genome-wide copy-number alterations and copy-neutral loss-of-heterozygosity profiles...
October 6, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28969132/prognostic-significance-of-epidermal-growth-factor-receptor-in-patients-of-glioblastoma-multiforme
#15
Kalpalata Tripathy, Bidyutprava Das, Ajit Kumar Singh, Aparajita Misra, Sanjib Misra, Sudhansu Sekhar Misra
INTRODUCTION: Glioblastoma Multiforme (GBM) is the most aggressive glial tumour with hallmark characteristics of rampant proliferation of glial cells along with high pleomorphism, necrosis, endothelial proliferation and high MIB-1 labeling index (cell proliferation marker). These tumours are managed by surgery followed by Radiotherapy (RT), Chemotherapy (CT) and adjuvant CT Temozolomide (TMZ). AIM: To evaluate Epidermal Growth Factor Receptor (EGFR) protein expression in GBM patients...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28953948/the-anti-apoptotic-protein-survivin-can-improve-the-prognostication-of-meningioma-patients
#16
Theo L Winther, Sverre H Torp
BACKGROUND: The 2016 WHO histopathological grading includes a substantial within-variation in recurrence risk, and is thus insufficient to predict prognosis after initial surgery of patients suffering from meningiomas. The aim of this study was to compare the prognostic value of the histopathological grading and the conventional biomarker MIB-1 with expression of the anti-apoptotic protein survivin to see if this biomarker could complement recurrence prediction. METHODS: Using immunohistochemistry, the expression of MIB-1 and survivin were determined as labeling indices (LIs) in tissue micro arrays from 160 human meningiomas...
2017: PloS One
https://www.readbyqxmd.com/read/28901666/clinicopathological-and-molecular-characteristics-of-pediatric-meningiomas
#17
Sudha Battu, Anupam Kumar, Pankaj Pathak, Suvendu Purkait, Linchi Dhawan, Mehar C Sharma, Ashish Suri, Manmohan Singh, Chitra Sarkar, Vaishali Suri
Molecular and clinical characteristics of pediatric meningiomas are poorly defined. Therefore, we analyzed clinical, morphological and molecular profiles of pediatric meningiomas. Forty pediatric meningiomas from January 2002 to June 2015 were studied. 1p36, 14q32 and 22q-deletion were assessed by fluorescent in situ hybridization and mutations of most relevant exons of AKT, SMO, KLF4, TRAF and pTERT using sequencing. Expression of GAB1, stathmin, progesterone receptor (PR), p53 along with MIB-1 LI was examined using immunohistochemistry...
September 13, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28900829/clinical-radiological-pathological-and-prognostic-aspects-of-intraventricular-oligodendroglioma-comparison-with-central-neurocytoma
#18
Xiang Xiao, Jun Zhou, Jun Wang, Lei Yang, Chunhong Wang, Yikai Xu, Yuankui Wu
Studies comparing intraventricular oligodendroglioma (IVO) and central neurocytoma (CN) in terms of their clinical, radiological and pathological features are scarce. We, therefore, investigated the similarities and differences between these types of tumors to get a better understanding of how they may be more properly diagnosed and treated. The clinical manifestations, CT/MRI findings, pathological characteristics and clinical outcomes of 8 cases of IVOs and 12 cases of CNs were analyzed retrospectively. Both IVO and CN occurred most commonly in young adults and manifested with symptoms of increased intracranial pressure secondary to obstructive hydrocephalus...
October 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28829990/interlaboratory-variability-of-ki67-staining-in-breast-cancer
#19
MULTICENTER STUDY
Cornelia M Focke, Horst Bürger, Paul J van Diest, Kai Finsterbusch, Doreen Gläser, Eberhard Korsching, Thomas Decker
BACKGROUND: Postanalytic issues of Ki67 assessment in breast cancers like counting method standardisation and interrater bias have been subject of various studies, but little is known about analytic variability of Ki67 staining between pathology labs. Our aim was to study interlaboratory variability of Ki67 staining in breast cancer using tissue microarrays (TMAs) and central assessment to minimise preanalytic and postanalytic influences. METHODS: Thirty European pathology labs stained serial slides of a TMA set of breast cancer tissues with Ki67 according to their routine in-house protocol...
October 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28740449/genetic-factors-affecting-intraoperative-5-aminolevulinic-acid-induced-fluorescence-of-diffuse-gliomas
#20
Kiyotaka Saito, Toshinori Hirai, Hideo Takeshima, Yoshihito Kadota, Shinji Yamashita, Asya Ivanova, Kiyotaka Yokogami
BACKGROUND: In patients operated for malignant glioma, 5-aminolevulinic acid (5-ALA)-induced fluorescence guidance is useful. However, we occasionally experience instances of non-visible fluorescence despite a histopathological diagnosis of high-grade glioma. We sought to identify factors that influence the intraoperative visualization of gliomas by their 5-ALA-induced fluorescence. PATIENTS AND METHODS: We reviewed data from 60 patients with astrocytic or oligodendroglial tumors who underwent tumor removal under 5-ALA-induced fluorescence guidance between January 2014 and December 2015...
June 2017: Radiology and Oncology
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