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Histiocytic sarcoma

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https://www.readbyqxmd.com/read/29228722/prognostic-factors-for-histiocytic-and-dendritic-cell-neoplasms
#1
Joji Shimono, Hiroaki Miyoshi, Fumiko Arakawa, Kensaku Sato, Takuya Furuta, Reiji Muto, Eriko Yanagida, Yuya Sasaki, Daisuke Kurita, Keisuke Kawamoto, Koji Nagafuji, Koichi Ohshima
Histiocytic and dendritic cell neoplasms are rare and poorly studied. We report the clinical characteristics and prognostic factors in such cases in Japan. We investigated the clinical characteristics and survival in 87 adult patients with histiocytic and dendritic cell neoplasms. Fifty patients had histiocytic sarcoma, 12 had Langerhans cell histiocytosis, 11 had follicular dendritic cell sarcoma, 8 had Langerhans cell sarcoma, 6 had interdigitating cell sarcoma and 1 had indeterminate dendritic cell sarcoma...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29194093/cdkn2a-b-deletion-and-double-hit-mutations-of-the-mapk-pathway-underlie-the-aggressive-behavior-of-langerhans-cell-tumors
#2
Luc Xerri, José Adélaïde, Cornel Popovici, Séverine Garnier, Arnaud Guille, Lenaïg Mescam-Mancini, Camille Laurent, Pierre Brousset, Carole Coze, Gérard Michel, Max Chaffanet, Reda Bouabdallah, Diane Coso, François Bertucci, Daniel Birnbaum
Langerhans cell histiocytosis (LCH) has a mostly favorable outcome, whereas Langerhans cell sarcoma (LCS) is an aggressive tumor. It is still unclear whether any specific molecular alterations could underlie the aggressive behavior of Langerhans cell proliferations. We used targeted next-generation sequencing and array-comparative genomic hybridization to profile 22 LCH samples from different patients together with 3 LCS samples corresponding to different relapses from the same patient. The third LCS relapse was a composite tumor including both B-cell chronic lymphocytic leukemia and LCS components...
November 29, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29189378/simultaneous-brain-and-lung-histiocytic-sarcoma-revealed-on-18f-fdg-pet-ct
#3
Yu Pan, Yifan Zhang
A 52-year-old man with intermittent head motor tics, aphasia and right upper extremity weakness had an F-FDG avid left front lobe brain lesion, and a left upper lobe lung lesion on PET/CT. The brain lesion was surgically resected, and was diagnosed pathologically as a histiocytic sarcoma (HS). The lung lesion was also a HS via bronchial biopsy. HS is rare and generally involves nodes as shown on PET/CT in a few case reports. The current case with simultaneous brain and lung HS lesions adds new imaging pattern information of the disease to the literature...
November 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29183888/histiocytic-sarcoma-a-population-based-analysis-of-incidence-demographic-disparities-and-long-term-outcomes
#4
Anuhya Kommalapati, Sri Harsha Tella, Martin Durkin, Ronald S Go, Gaurav Goyal
No abstract text is available yet for this article.
November 28, 2017: Blood
https://www.readbyqxmd.com/read/29181991/chest-wall-resection-and-reconstruction-for-rosai-dorfman-disease-masquerading-as-a-chest-wall-sarcoma
#5
V Joshi, G Offer, C Richards, S Rathinam
Rosai-Dorfman disease (RDD) is a rare benign histiocytic proliferative disease that can present as a pseudotumour of soft tissue. We describe the first chest wall resection and reconstruction.
November 28, 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29169617/primary-histiocytic-sarcoma-of-the-brain-in-an-african-hedgehog-atelerix-albiventris
#6
Kikumi Ogihara, Kaoru Suzuki, Hiroo Madarame
A 2.5-year-old African hedgehog (Atelerix albiventris) with signs of progressive paresis/paralysis for approximately 6 months was diagnosed with 'wobbly hedgehog syndrome' (WHS). Post-mortem examination revealed a primary central nervous system (CNS) histiocytic sarcoma (HS) associated with neurodegenerative changes of the CNS and skeletal muscle atrophy. Grossly, a spherical mass infiltrated the left forebrain and was located between the frontal lobe and thalamus in coronal sections. Microscopically, the neoplastic cells had eccentrically located anisokaryotic nuclei and abundant eosinophilic cytoplasm...
November 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/29105675/-a-case-of-pulmonary-artery-sarcoma-and-review-of-the-literature
#7
Maria Chiara Todaro, Renzo Orlassino, Cristina Fornengo, Adriana Ravera, Giuseppe Macchia, Francesco Soffiantino, Rina Lionella Lovato, Gaetano Senatore
Pulmonary artery sarcoma (PAS) is a highly malignant tumor that originates in the pulmonary artery. This disease has a poor prognosis. Early diagnosis followed by radical surgical resection constitutes the only chance of survival for patients. However, owing to the rare and nonspecific clinical manifesta-tions and imaging findings, PAS is frequently misdiagnosed as various pulmonary thromboembolic diseases. We report the case of a 49-year-old woman who presented to our emergency department for dyspnea, hemoptysis, cough, and asthenia...
November 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29097496/response-to-mek-inhibition-with-trametinib-and-tyrosine-kinase-inhibition-with-imatinib-in-multifocal-histiocytic-sarcoma
#8
Sophie Voruz, Anne Cairoli, Olaia Naveiras, Laurence de Leval, Edoardo Missiaglia, Krisztian Homicsko, Olivier Michielin, Sabine Blum
No abstract text is available yet for this article.
November 2, 2017: Haematologica
https://www.readbyqxmd.com/read/28958257/cutaneous-manifestation-of-histiocytic-sarcoma-presentation-and-management
#9
Joseph Zakhary, Jorge de la Torre
No abstract text is available yet for this article.
September 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28929581/gain-of-function-mutation-in-ptpn11-in-histiocytic-sarcomas-of-bernese-mountain-dogs
#10
T Thaiwong, S Sirivisoot, M Takada, V Yuzbasiyan-Gurkan, M Kiupel
Histiocytic sarcoma (HS) is an aggressive malignant neoplasm of dendritic cell origin that is common in certain breeds of dogs. High prevalence of fatal, disseminated HS has been described in Bernese Mountain Dogs (BMDs). Support for genetic predisposition to develop HS has been presented in several studies, but to date, causative genetic events have not been reported. In addition, no driver mutations have been identified in tumours. Recently, E76K gain-of-function mutation in SHP2 encoded by the PTPN11 gene has been described in human histiocytic malignancies...
September 20, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28924109/retroperitoneal-bulky-histiocytic-sarcoma-successfully-treated-with-induction-chemotherapy-followed-by-curative-surgery
#11
Masafumi Oto, Akiko Maeda, Taku Nose, Yujiro Ueda, Shima Uneda, Akito Inadome, Koichi Oshima, Minoru Yoshida
Histiocytic sarcoma (HS) is a rare hematopoietic neoplasm. We report a patient with HS treated with induction chemotherapy followed by curative surgery. A 50-year-old man was referred to our hospital because of a retroperitoneal tumor. A computed tomography scan revealed a bulky retroperitoneal mass, infiltrating the surrounding organ. An excisional biopsy confirmed the diagnosis of HS. The tumor shrunk after multidrug chemotherapy. However, positron emission tomography showed uptake of fludeoxyglucose in the residual tumor...
October 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28867679/a-2-base-insertion-in-exon-5-is-a-common-mutation-of-the-tp53-gene-in-dogs-with-histiocytic-sarcoma
#12
Hajime Asada, Masaya Tsuboi, James K Chambers, Kazuyuki Uchida, Hirotaka Tomiyasu, Yuko Goto-Koshino, Koichi Ohno, Hajime Tsujimoto
Canine histiocytic sarcoma (HS) is a malignancy originating from the histiocytic cell lineage and characterized by poor response to chemotherapy and short survival time. Mutation of the TP53 gene and its association with poor prognosis has been reported in several canine tumors. However, the mutation of this gene has not been investigated in canine HS. The aim of this study was to examine a TP53 gene mutation in dogs with HS. Aberrations of the TP53 gene were examined by polymerase chain reaction-single strand conformational polymorphism analysis and DNA sequence analysis, revealing mutations of the TP53 gene in 12 (46%) of 26 dogs affected by HS...
October 20, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28836371/prior-joint-disease-is-associated-with-increased-risk-of-periarticular-histiocytic-sarcoma-in-dogs
#13
E K Manor, L E Craig, X Sun, C M Cannon
Periarticular histiocytic sarcoma (PAHS) is the most common synovial tumour in dogs and is characterized by aggressive local disease with a high rate of distant metastasis. Previously, an association between PAHS and prior joint disease has been demonstrated in the Bernese Mountain Dog breed and suggested in the Rottweiler. We hypothesized that this association would be present in other breeds and investigated this via a retrospective, case-controlled analysis. Cases were dogs diagnosed with PAHS of the stifle or elbow...
August 23, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28834636/intraosseous-rosai-dorfman-disease-diagnosed-by-touch-imprint-cytology-evaluation-a-case-series
#14
Avani A Pendse, Sara E Wobker, Kevin G Greene, Scott V Smith, Robert J Esther, Leslie G Dodd
Sinus histiocytosis with massive lymphadenopathy, also known as Rosai-Dorfman disease (RDD) is a rare benign disorder that primarily affects the lymph nodes. Localized lymphadenopathy is the most common clinical manifestation of this disorder. However, RDD has been described in several extra-nodal sites including the head and neck region, soft tissue, skin, upper respiratory tract, gastro-intestinal tract and central nervous system (CNS). Involvement of the bone is considered very rare, occurring in less than 10% patients...
August 23, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28833247/effect-of-dasatinib-in-a-xenograft-mouse-model-of-canine-histiocytic-sarcoma-and-in-vitro-expression-status-of-its-potential-target-epha2
#15
K Ito, R Miyamoto, H Tani, S Kurita, M Kobayashi, K Tamura, M Bonkobara
Canine histiocytic sarcoma (HS) is an aggressive and highly metastatic tumor. Previously, the kinase inhibitor dasatinib was shown to have potent growth inhibitory activity against HS cells in vitro, possibly via targeting the EPHA2 receptor. Here, the in vivo effect of dasatinib in HS cells was investigated using a xenograft mouse model. Moreover, the expression status of EPHA2 was examined in six HS cell lines, ranging from insensitive to highly sensitive to dasatinib. In the HS xenograft mouse model, dasatinib significantly suppressed tumor growth, as illustrated by a decrease in mitotic and Ki67 indices and an increase in apoptotic index in tumor tissues...
August 17, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28805986/histiocytic-sarcoma-new-insights-into-fna-cytomorphology-and-molecular-characteristics
#16
Yin P Hung, Scott B Lovitch, Xiaohua Qian
BACKGROUND: Histiocytic sarcoma (HS) is a rare malignant neoplasm showing morphologic and immunophenotypic features of histiocytes. Molecular characteristics of HS and fine-needle aspiration (FNA) criteria for its diagnosis have not been established. METHODS: A case series of HS in 8 FNA samples from 6 patients was reviewed along with histopathologic and clinical data. Immunohistochemistry was performed on cell blocks (3 cases), core biopsies (5 cases), and surgical specimens (4 cases)...
August 2017: Cancer
https://www.readbyqxmd.com/read/28797620/extended-follow-up-of-patients-treated-with-bendamustine-for-lymphoid-malignancies
#17
Mara Penne, Maryam Sarraf Yazdy, Kruti Sheth Nair, Bruce D Cheson
INTRODUCTION: Bendamustine, typically in combination with rituximab, is an effective treatment for chronic lymphocytic leukemia (CLL) and B-cell non-Hodgkin lymphoma. Despite its acceptable short-term toxicity profile, long-term toxicities are less well established. This study investigated the long-term adverse effects of bendamustine and responses to subsequent treatments. PATIENTS AND METHODS: Charts of 194 patients were retrospectively reviewed; 54% had received prior treatment (76% attained complete response [CR] or partial response [PR])...
October 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28755918/indeterminate-dendritic-cell-tumor-in-thoracic-spine-a-case-report-and-review-of-literature
#18
Sze Kiat Tan, Lee Onn Chieng, Karthik Madhavan, Andrew Rosenberg, Ian Cote
Indeterminate dendritic cell tumor (IDCT) is an extremely rare hematological disorder with poorly understood pathogenesis. Occasionally encountered by hematologists, unusual presentations of IDCT have never been reported in the spine literature. The authors report a case of a 51-year-old man who presented with progressively worsening axial thoracic back pain radiating to his sides for three months. MRI revealed a large 3-cm enhancing mass at the T9 vertebral body with an exophytic component causing significant canal stenosis...
July 26, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28752676/fine-needle-aspiration-findings-of-a-rare-hematopoietic-neoplasm-presenting-as-obstructive-jaundice
#19
Jessica Tracht, Ali M Ahmed, Frida Rosenblum Donath
A 51-year-old female who presented with obstructive jaundice was found to have masses in the pancreatic head and tail as well as suspicious liver and periaortic masses on imaging. Aspiration cytology of the pancreatic tail mass showed abundant large single cells with vacuolated eosinophilic cytoplasm, marked nuclear pleomorphism, large bizarre irregular nuclei, binucleation, and prominent nucleoli. Numerous cells also showed intracytoplasmic black to brown pigmentation. A cell block was obtained and extensive immunohistochemical staining was performed...
July 27, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28749793/pax8-expression-in-solitary-fibrous-tumor-a-potential-diagnostic-pitfall
#20
David Ullman, Jennifer Gordetsky, Gene P Siegal, Carlos N Prieto-Granada, Shi Wei, Todd M Stevens
PAX8 is used as a diagnostic aid in classifying retroperitoneal (RP) spindle cell tumors. PAX8 positivity in a spindled RP tumor is typically associated with sarcomatoid renal cell carcinoma (SRCC). However, PAX8 expression in solitary fibrous tumor (SFT), a tumor not uncommon to the RP, has not been extensively studied. We investigated the expression of PAX8 in SFTs and other spindle cell RP tumors. We collected 30 SFT, 23 SRCC, 11 gastrointestinal stromal tumors, 2 synovial sarcomas, 6 dedifferentiated liposarcomas (DDLS), 4 well differentiated liposarcomas (WDLS), and select other tumors...
July 26, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
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