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Hemangiopericytoma

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https://www.readbyqxmd.com/read/28183679/glomangiopericytoma-hemangiopericytoma-of-the-maxillary-sinus-and-sinonasal-tract
#1
Samaher Al Saad, Razan Al Hadlaq, Nabil Al-Zaher
No abstract text is available yet for this article.
February 1, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28163517/occipital-falcine-anaplastic-hemangiopericytoma-mimicking-meningioma
#2
Davendran Kanesen, Regunath Kandasamy, Zamzuri Idris
The rarity of hemangiopericytoma (HPC) and its controversial histological classification result in its frequent misdiagnosis and thus make the treatment quite challenging. It is often difficult to distinguish these tumors from meningiomas based on clinical features and radiological findings. This is a case report of a man, diagnosed clinically and radiologically as meningioma, which turned out to be anaplastic HPC on histological examination. A 30-year-old man presented with 3 months of progressively worsening of headache and blurring of vision...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28128724/validation-of-nuclear-stat6-immunostaining-as-a-diagnostic-marker-of-meningeal-solitary-fibrous-tumor-sft-hemangiopericytoma
#3
Anna S Berghoff, Philip Kresl, Michal Bienkowski, Christian Koelsche, Ursula Rajky, Johannes A Hainfellner, Matthias Preusser
INTRODUCTION: NAB2-STAT6 gene fusion is a molecular characteristic of solitary fibrous tumors (SFT) and hemangiopericytoma, underscoring their definition as one diagnostic entity. NAB2-STAT6 fusion is associated with nuclear relocation of STAT6 protein that can be detected by immunohistochemistry. We evaluated the diagnostic value of STAT6 expression in meningeal tumors. METHODS: 77 meningeal tumors (17/77 (22.0%) SFT/hemangiopericytoma, 11/77 meningothelial meningioma, 10/77 atypical meningioma 8/77 chordoid meningioma, 9/77 fibroblastic meningioma, 10/77 transitional meningioma, 3/77 rhabdoid meningioma and 9/77 anaplastic meningioma) were included...
January 27, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28049034/hypervascular-lesions-of-the-cerebellopontine-angle-the-relevance-of-angiography-as-a-diagnostic-and-therapeutic-tool-and-the-role-of-stereotactic-radiosurgery-in-management-a-comprehensive-review
#4
REVIEW
Yosef Laviv, Ajith Thomas, Ekkehard M Kasper
The cerebellopontine angle (CPA) is a narrowed skull base area, containing important cranial nerves and vessels and bordering with eloquent areas of the posterior fossa. Tumors of the CPA are a heterogeneous group and can arise extradural, intradural-extraaxial or intraaxial. Accordingly, their vascular supply changes, depending on their anatomical origin. Symptomatic, large CPA tumors require surgical resection in order to prevent irreversible, severe neurological damages. However, its tight and strategical location make surgery in the CPA very challenging and require appropriate pre-surgical planning...
December 31, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28018804/extracalvarial-composite-infantile-myofibromatosis-case-report-and-literature-review
#5
Alexander Ivanov, Tibor Valyi-Nagy, Dimitrios Nikas
Infantile soft tissue tumors of the head are very rare and the majority of them are myofibromas. The authors present the case of a 1-day-old boy with a scalp tumor with several distinct histopathological features including myofibroma, hemangiopericytoma, and fibrosarcoma consistent with the diagnosis of composite infantile myofibromatosis. Genetic testing was negative for trisomy 17, translocation (12; 15), FUS, and ETV6 translocations. Despite the ominous histopathological features, the clinical course was benign...
December 2016: European Journal of Pediatric Surgery Reports
https://www.readbyqxmd.com/read/27978887/-hemangiopericytoma-from-external-auditory-canal-and-middle-ear-one-case-report
#6
M H Wu, N Wu, Y Cheng
No abstract text is available yet for this article.
December 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27955965/unusual-presentation-of-infantile-myofibroma-in-the-deep-palm-of-a-child-a-case-report-and-discussion-of-the-differential-diagnosis
#7
Matthew S Brown, Amer Heider, Kevin C Chung
Infantile myofibroma or myofibromatosis is a myofibroblastic and fibroblastic proliferation that is most commonly reported in children younger than 2 years of age. It is a benign process composed histologically of a biphasic pattern of spindle-shaped cells surrounding a zone of less differentiated cells in a hemangiopericytoma-like pattern. We report this tumor in a unique presentation in the deep palm of a 2-year-old child without skin ulceration and with an intimate association with the median nerve. The well-circumscribed nature of the tumor facilitated complete excision with neural preservation...
December 9, 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27895527/phase-ii-trial-of-angiotensin-1-7-for-the-treatment-of-patients-with-metastatic-sarcoma
#8
Paul D Savage, James Lovato, K Bridget Brosnihan, Antonius A Miller, W Jeffrey Petty
Background. Angiotensin-(1-7) [Ang-(1-7)] is an endogenous antiangiogenic hormone with anticancer activity. In a phase I study of Ang-(1-7), two of three patients with metastatic sarcoma experienced disease stabilization. This phase II study examined clinical and biomarker outcomes for patients with metastatic sarcoma. Methods. Ang-(1-7) was administered by subcutaneous injection at a dose of 20 mg daily. If excessive toxicities occurred in the first cohort, a dose deescalation cohort was allowed. Blood samples were obtained to measure changes in biomarkers...
2016: Sarcoma
https://www.readbyqxmd.com/read/27874203/multifocal-congenital-hemangiopericytoma
#9
Renata Robl, Vânia Oliveira Carvalho, Kerstin Taniguchi Abagge, Marjorie Uber, Leniza Costa Lima Lichtvan, Betina Werner, Mehrdad Mehrdad Nadji
Congenital hemangiopericytoma (HPC) is a rare mesenchymal tumor with less aggressive behavior and a more favorable prognosis than similar tumors in adults. Multifocal presentation is even less common than isolated HPC and hence its clinical and histologic recognition may be challenging. A newborn infant with multifocal congenital HPC causing severe deformity but with a favorable outcome after chemotherapy and surgical removal is reported.
November 22, 2016: Pediatric Dermatology
https://www.readbyqxmd.com/read/27867924/metastatic-intracranial-hemangiopericytoma-to-the-spinal-column-a-case-report
#10
Myung Sung Joo, Young Joon Rho, Sang Woo Song, Young-Cho Koh, Hong Gee Roh, So-Dug Lim
Intracranial hemangiopericytoma (HPC) is a rare brain tumor with aggressive biologic behavior associated with high recurrence rate and often with extracranial metastasis. The most common sites of extracranial metastasis of the intracranial HPC are the long bones, lung, liver and abdominal cavity in the order of frequencies. Extracranial metastases usually occur long after the initial diagnosis of the primary tumor. Metastatic intracranial HPC to the vertebra has been rarely reported. We present a case of intracranial HPC metastasized to the L2 vertebral body 13 years after multiple surgical resections and radiotherapy of the primary intracranial HPC...
October 2016: Brain Tumor Research and Treatment
https://www.readbyqxmd.com/read/27853959/epidemiology-for-primary-brain-tumors-a-nationwide-population-based-study
#11
Amélie Darlix, Sonia Zouaoui, Valérie Rigau, Faiza Bessaoud, Dominique Figarella-Branger, Hélène Mathieu-Daudé, Brigitte Trétarre, Fabienne Bauchet, Hugues Duffau, Luc Taillandier, Luc Bauchet
Primary central nervous system tumors (PCNST) are rare tumors responsible for high mortality and morbidity. Their epidemiology is poorly known, and clinical data are scarcely analyzed at a national level. In this study, we aimed at providing descriptive epidemiological data and incidence rates for all histological subtypes of PCNST according to the WHO classification. We conducted a nationwide population-based study of all newly diagnosed and histologically confirmed PCNST in France, between 2006 and 2011. A total of 57,816 patients were included: male 46...
November 16, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27801496/gastric-metastasis-from-malignant-meningeal-hemangiopericytoma
#12
Aida Khadhar, Alia Zehani, Yassine Ben Safta, Mohamed Amine Bani, Ines Chelly, Slim Haouet, Nidhameddine Kchir
No abstract text is available yet for this article.
May 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/27799979/meningeal-hemangiopericytoma-in-33-year-old-female-a-case-report
#13
Alireza Abdollahi, Reyhaneh Abdollahpouri, Seyed-Mohammad Tavangar
Intracranial hemangiopericytomas (HPC) are rare vascular tumors. They account for 0.4% of primary central nervous system tumors. HPC is more commonly located supratentorially and tends to occur in a younger age group, with average age at presentation of 38-42 years. The tumor was found throughout the entire CNS, usually superficially and closely related to the meninges. Moreover, they have a strong tendency for local recurrence and extracranial metastasis. Given the clinical, pathological and imaging similarities between Hemangiopericytoma and angioblastic/anaplastic meningioma and the necessity of differentiating these two (choosing the proper treatment and prognosis), we present a report of meningeal Hemangiopericytoma tumor in a 33-year-old female...
2016: Iranian Journal of Pathology
https://www.readbyqxmd.com/read/27799967/role-of-immunohistochemistry-in-the-diagnosis-of-solitary-fibrous-tumor-a-review
#14
REVIEW
Bita Geramizadeh, Mahsa Marzban, Andrew Churg
BACKGROUND: Solitary fibrous tumor (SFT) is a mesenchymal tumor which is most commonly seen in the pleura; however it can be seen in other organs such as the meninge, gastrointestinal tract, soft tissue, bone, and skin. SFT should be differentiated from other mesenchymal tumors in these organs. Immunohistochemistry plays a pivotal role for the histopathologic diagnosis of this tumor. Currently, new markers have been introduced which has been very useful for definite diagnosis of SFT along with other markers in each specific location which are negative in SFT...
2016: Iranian Journal of Pathology
https://www.readbyqxmd.com/read/27776010/recurrent-somatic-pdgfrb-mutations-in-sporadic-infantile-solitary-adult-myofibromas-but-not-in-angioleiomyomas-and-myopericytomas
#15
Abbas Agaimy, Matthias Bieg, Michael Michal, Helene Geddert, Bruno Märkl, Jan Seitz, Evgeny A Moskalev, Matthias Schlesner, Markus Metzler, Arndt Hartmann, Stefan Wiemann, Michal Michal, Thomas Mentzel, Florian Haller
Infantile myofibroma (MF) is an uncommon benign myofibroblastic tumor of infancy and childhood. Solitary adult MF shares similar features with infantile MF. The lesions occur in 3 clinicopathologic settings: solitary, multicentric, and generalized and can be either sporadic or familial. Traditionally, infantile MF has been included in the spectrum of infantile hemangiopericytoma. The recent World Health Organization classification listed MF, angioleiomyoma, and myopericytoma under the general heading of perivascular tumors in the sense of a morphologic spectrum of perivascular myoid cell neoplasms...
October 21, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27773560/surgical-resection-of-sinonasal-hemangiopericytoma-involving-anterior-skull-base-case-reports-and-literature-review
#16
Jonathan C Simmonds, Elie E Rebeiz
Hemangiopericytomas are soft tissue tumors composed of pericytic cells that are characterized by their "staghorn" vascular branching and their variable clinical presentation. Fifteen to 25% of all HPC occur in the head and neck, with only 5% found in the nose or paranasal sinuses. Sinonasal hemangiopericytoma (SNHPC) is considered distinct from its soft tissue counterpart - the former showing a more uniform cellular organization, has convincing pericytic differentiation and is associated with a far better prognosis...
January 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/27769643/gamma-knife-radiosurgery-for-residual-or-recurrent-intracranial-hemangiopericytomas
#17
Byung Sup Kim, Doo-Sik Kong, Ho Jun Seol, Do-Hyun Nam, Jung-Il Lee
Residual or recurrent hemangiopericytoma (HPC) has been treated with radiosurgery; however, its long-term outcome is not well known. This study is to investigate the long-term outcome of gamma knife radiosurgery (GKS) for residual or recurrent HPCs. We conducted a retrospective analysis of 18 patients who underwent gamma knife radiosurgery for residual or recurrent HPCs. Of the 18 patients, 10 patients had high-grade HPCs (27 tumors) and 8 had low-grade HPCs (13 tumors). Median overall survival (OS) after the first GKS was 134...
January 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27758816/treatment-of-orbital-solitary-fibrous-tumour-with-gamma-knife-radiosurgery-and-systematic-review-of-literature
#18
Athreya Tata, Or Cohen-Inbar, Jason P Sheehan
Solitary fibrous tumours (SFTs) are relatively rare tumours that were originally thought to arise from the pleura but have thereafter been demonstrated as occurring anywhere in the body. These tumours are generally considered benign but have frequently been noted for recurrence and local invasion. Furthermore, their indolence is controversial due to increasing evidence implicating the existence of a spectrum that includes hemangiopericytoma (HPC). Stereotactic radiosurgery (SRS) has been well characterised in the treatment of benign, malignant and vascular conditions, and it appears to be a reasonable option as adjuvant or recurrent treatment for intracranial SFTs...
October 7, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27721623/solitary-fibrous-tumor-of-maxilla-a-rare-entity
#19
R Heera, M Renu Chandran, S K Padmakumar, R Rajeev
Solitary fibrous tumor (SFT) is a ubiquitous rare mesenchymal neoplasm. Pleura is the favored site of origin and is rare in the oral cavity. SFT occurs across a wide histopathologic spectrum. Fibrous form characterized by hyalinized, thick-walled vessels with opened lumina and strong CD34 reactivity constitute one end and on the other end, a cellular form representing the conventional hemangiopericytoma, with branched, thin-walled vessels and focal or negative CD34 reactivity characterize the spectrum. A case of oral SFT in a 30-year-old female patient with its clinical, histopathological and immunohistochemical features is being presented here...
September 2016: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/27702706/radiosurgery-for-secondary-trigeminal-neuralgia-revisiting-the-treatment-paradigm
#20
Srinivas Chivukula, Won Kim, Xiaoyi Zhuo, Stephen Tenn, Tania Kaprealian, Antonio DeSalles, Nader Pouratian
BACKGROUND: The mechanisms by which surgery and radiation elicit pain relief in trigeminal neuralgia (TN) secondary to mass lesions vary widely. We aimed to evaluate the outcomes of radiation to the nerve rather than to the lesion in the treatment of secondary TN. METHODS: We retrospectively reviewed all patients who underwent radiation at the University of California, Los Angeles for TN secondary to tumors. The Barrow Neurological Institute (BNI) pain score was used to evaluate pain outcomes...
October 1, 2016: World Neurosurgery
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