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Hemangiopericytoma

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https://www.readbyqxmd.com/read/28521401/mri-features-of-intracranial-anaplastic-hemangiopericytoma
#1
Liang-Cai Bai, Tian-You Luo, Hao Zhu, Rui Xu
Magnetic resonance imaging (MRI) features of intracranial anaplastic hemangiopericytoma (AHPC) were analyzed. The pathological examination showed that there was a great number of irregularly arranged tumor cells with nuclear atypia, and mitotic properties were commonly seen providing support for clinical staging, therapy and prognosis judgment. Eighteen cases of intracranial AHPC proved by operation and pathology were analyzed retrospectively. Both plain and enhanced MR scans were performed and the results were compared with pathology in all cases...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28512044/spinal-solitary-fibrous-tumor-hemangiopericytoma-a-clinicopathological-and-radiological-analysis-of-eleven-cases
#2
Xiaoping Yi, Desheng Xiao, Yujiao He, Hongling Yin, Guanghui Gong, Xueying Long, Weihua Liao, Xuejun Li, Lunquan Sun, Youming Zhang, Bo Zhang
PURPOSE: To retrospectively review the clinicopathological features and computed tomography (CT) and magnetic resonance imaging (MRI) findings of spinal solitary fibrous tumor (SFT)/hemangiopericytoma (HPC) tumors. MATERIALS AND METHODS: Eleven patients with surgically and pathologically confirmed spinal SFT/HPC were enrolled. Their clinicopathological data and imaging findings were retrospectively reviewed. RESULTS: There were eight male and three female patients with a median age of 42 years (range, 26-65 years)...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28502683/surgical-management-and-adverse-factors-for-recurrence-and-long-term-survival-in-hemangiopericytoma-patients
#3
Gui-Jun Zhang, Zhen Wu, Li-Wei Zhang, Da Li, Jun-Ting Zhang
OBJECTIVE: Intracranial hemangiopericytoma (HPC) is a rare tumour type with a high recurrence rate. This study analysed the adverse factors for recurrence and survival of HPC patients. METHODS: We retrospectively reviewed clinical data of 120 HPC patients (mean age: 42 years; including 60 males) that were surgically treated in our hospital from December 2008 to January 2016. RESULTS: The gross total resection (GTR) rate was 71.7%. Sixty-three patients received postoperative adjuvant radiotherapy (PRT)...
May 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28487308/pancreatic-metastasis-from-an-osseous-solitary-fibrous-tumour
#4
Jennifer Sue Colvin, Gareth Morris-Stiff, Michael Cruise, Andrei Purysko
A 73-year-old man presented with a right-sided chest wall mass that showed an epitheloid neoplasm with mild cytologic atypia on core needle biopsy. He underwent surgical resection, and final pathology revealed solitary fibrous tumour/hemangiopericytoma with negative margins. Three years after surgical resection, the patient presented with fatigue, abdominal pain, weight loss and mildly elevated liver function tests. Further workup revealed a 1.2 cm hypervascular mass in the neck of the pancreas. This case report summarises the surgical treatment and outcomes for a patient who presented with this rare tumour...
May 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28468036/-clinicopathologic-features-of-atypical-type-a-thymoma
#5
Y C Su, J X Di, J P Da
Objective: To study the clinicopathologic features, immunophenotype and differential diagnosis of atypical type A thymoma. Methods: Clinicopathologic and follow-up data of three cases of atypical type A thymoma from 2004 to 2016 were reviewed. Immunohistochemical staining was performed. Results: All three patients were male with average age of 59 years. Clinically, the lesions presented as anterior mediastinal masses. Grossly, the tumor ranged in size from 4 to 6 cm in greatest dimension and partially enclosed within fibrous capsule...
May 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28457176/3d-digital-subtracted-ct-angiography-to-evaluate-the-venous-anatomy-in-extra-axial-tumors-invading-the-major-dural-venous-sinuses
#6
Stéphanie Lenck, Damien Bresson, Anne-Laure Bernat, Jean-Pierre Saint-Maurice, Marc-Antoine Labeyrie, Sébastien Froelich, Emmanuel Houdart
Background Investigation of the venous system surrounding a tumor that is invading a dural sinus is of great use for guiding the surgical excision. Non-invasive imaging is often inadequate since enhancement of the tumor causes it to blend with the contrast of the venous vascular structures. Conventional two-dimensional angiography is also often insufficient. Objective The objective of this study was to report regarding the potential of three-dimensional digital subtracted computed tomography angiography (3D DS-CTA) as a technique to preoperatively explore these tumors...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28447278/invasiveness-is-associated-with-metastasis-and-decreased-survival-in-hemangiopericytoma-of-the-central-nervous-system
#7
Connor J Kinslow, Raj S Rajpara, Cheng-Chia Wu, Samuel S Bruce, Peter D Canoll, Shih-Hsiu Wang, Adam M Sonabend, Sameer A Sheth, Guy M McKhann, Michael B Sisti, Jeffrey N Bruce, Tony J C Wang
Meningeal hemangiopericytoma (m-HPC) is a rare tumor of the central nervous system (CNS), which is distinguished clinically from meningioma by its tendency to recur and metastasize. The histological classification and grading scheme for m-HPC is still evolving and few studies have identified tumor features that are associated with metastasis. All patients at our institution with m-HPC were assessed for patient, tumor, and treatment characteristics associated with survival, recurrence, and metastasis. New findings were validated using the SEER database...
April 26, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28429277/primary-ewing-sarcoma-primitive-neuroectodermal-tumor-of-the-kidney-a-clinicopathologic-study-of-23-cases
#8
Paari Murugan, Priya Rao, Pheroze Tamboli, Bogdan Czerniak, Charles C Guo
Primary Ewing sarcoma / primitive neuroectodermal tumor (ES) of the kidney is a rare neoplasm with limited clinicopathologic data. We report 23 such cases with no history of ES elsewhere in the body. The patients included 13 male and 10 female, aged 8-70 years (mean, 31 years). The average tumor size was 11.7 cm (range, 5-20 cm). Microscopic analysis showed predominantly lobular growth (n = 14), with focal papillary (n = 3), alveolar (n = 1), and hemangiopericytoma-like (n = 1) patterns. Several tumors (n = 11) exhibited robust mitotic activity (>10 mitoses/10 high-power fields)...
April 20, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28365065/infantile-hemangiopericytoma-of-the-tongue-efficacy-of-ex-utero-intrapartum-treatment-procedure-and-combined-modality-therapy
#9
Takenori Ogawa, Ryo Ishii, Daiki Ozawa, Takeshi Rikiishi, Hajime Usubuchi, Mika Watanabe, Yoshimichi Imai, Kenichi Sato, Masatoshi Saito, Yoji Sasahara, Tadashi Matsuda, Shigeo Kure, Yukio Katori
Here we present an extremely rare case of giant infantile hemangiopericytoma (HPC) of the tongue diagnosed prenatally by fetal ultrasonography and MR imaging. Due to airway stenosis, the patient was delivered by the ex utero intrapartum treatment (EXIT) procedure at 36 weeks of pregnancy. Initial diagnosis was infantile hemangioma based on physical examination, diagnostic imaging and the high incidence of hemangioma. The tumor was resistant to conservative treatments. Due to severe tumor hemorrhage, the nutrient vessel was embolized by endovascular treatment on the 73th day after birth...
March 29, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28340171/immunohistochemical-approach-to-the-differential-diagnosis-of-meningiomas-and-their-mimics
#10
Camille Boulagnon-Rombi, Clémence Fleury, Caroline Fichel, Sophie Lefour, Aude Marchal Bressenot, Guillaume Gauchotte
The differential diagnosis between meningioma and others tumors can be challenging. This study aimed to evaluate different immunohistochemical markers for the differential diagnosis between meningioma and their morphological mimics. Immunohistochemistry was performed on tissue microarray with antiepithelial membrane antigen (EMA), progesterone receptor, somatostatin receptor 2A (SSTR2A), CD34, STAT6, S100, SOX10, HMB45, MelanA, GFAP, inhibin, and BCL2 antibodies. One hundred and twenty-seven meningiomas, 26 solitary fibrous tumor/hemangiopericytomas (SFT/HPC), 39 schwannomas, 17 hemangioblastomas, 21 melanomas, 9 gliosarcomas, 5 neurofibromas, 9 peripheral primitive neuroectodermal tumors, 7 synovial sarcomas, and 5 malignant peripheral nerve sheath tumors were included in the microarray...
April 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28338502/sellar-atypical-teratoid-rhabdoid-tumor-at-rt-a-clinicopathologically-and-genetically-distinct-variant-of-at-rt
#11
Satoshi Nakata, Sumihito Nobusawa, Takanori Hirose, Shinji Ito, Naoko Inoshita, Shunsuke Ichi, Vishwa J Amatya, Yukio Takeshima, Kazuhiko Sugiyama, Yukihiko Sonoda, Hironori Haga, Junko Hirato, Yoichi Nakazato, Hideaki Yokoo
Atypical teratoid/rhabdoid tumors (AT/RTs) are rare aggressive tumors of the central nervous system that predominantly affect infants. Although adult AT/RT are rare, accumulated cases have revealed adult-specific AT/RT in the sellar region. Twelve previously reported cases of sellar AT/RT exclusively occurred in adult females, suggesting biological differences from conventional infant AT/RT. We herein investigated a series of 6 sellar AT/RT for histopathologic features, the molecular status of the INI1/SMARCB1 gene, and clinical courses...
March 23, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28293736/5ala-in-pediatric-brain-tumors-is-not-routinely-beneficial
#12
Jonathan Roth, Shlomi Constantini
PURPOSE: Over recent years, 5-aminoluvolinic acid (5ALA) has been increasingly used for resection guidance in adult high-grade gliomas. However, amongst pediatric patients, publication of intraoperative fluorescence has been limited, with inconsistent outcomes. We describe our experience and intraoperative finding amongst children with various brain tumors that were given 5ALA prior to tumor resection. METHODS: Since October 2014, data regarding intraoperative findings amongst children that received 5ALA prior to tumor resection were prospectively collected...
March 14, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28230593/hemangiopericytoma-arose-from-the-site-of-meningioma-resection
#13
Xiang Wang, Xiejun Zhang, Qian Zhou, Xiuming Zhou, Lei Chen, Guodong Huang, Weiping Li
Intracranial hemangiopericytoma (HPC) is a rare tumor and accounts for 0.4% of all primary central nervous system tumors. However, it has aggressive behavior in growth and infiltration. The importance of diagnosis and treatment between HPC and meningioma cannot be overemphasized. It is rare that HPC arises from the site of benign meningioma resection. And it would be benefitted to take HPC into account when coming across a patient with meningioma "recurrence."
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28183679/glomangiopericytoma-hemangiopericytoma-of-the-maxillary-sinus-and-sinonasal-tract
#14
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
#15
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
#16
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...
March 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
#17
REVIEW
Yosef Laviv, Ajith Thomas, Ekkehard M Kasper
BACKGROUND: 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 have extradural, intradural/extra-axial, or intra-axial origins. Their vascular supply changes depending on their anatomic 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...
April 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28018804/extracalvarial-composite-infantile-myofibromatosis-case-report-and-literature-review
#18
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
#19
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
#20
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...
March 2017: Journal of Hand Surgery
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