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Dendritic cell sarcoma

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https://www.readbyqxmd.com/read/29774215/importance-of-functional-loss-of-fus-in-ftld-als
#1
REVIEW
Shinsuke Ishigaki, Gen Sobue
Fused in sarcoma (FUS) is an RNA binding protein that regulates RNA metabolism including alternative splicing, transcription, and RNA transportation. FUS is genetically and pathologically involved in frontotemporal lobar degeneration (FTLD)/amyotrophic lateral sclerosis (ALS). Multiple lines of evidence across diverse models suggest that functional loss of FUS can lead to neuronal dysfunction and/or neuronal cell death. Loss of FUS in the nucleus can impair alternative splicing and/or transcription, whereas dysfunction of FUS in the cytoplasm, especially in the dendritic spines of neurons, can cause mRNA destabilization...
2018: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/29743654/expression-of-the-transcription-factor-zbtb46-distinguishes-human-histiocytic-disorders-of-classical-dendritic-cell-origin
#2
Ansuman T Satpathy, Ryanne A Brown, Ellen Gomulia, Carlos G Briseño, Maxwell R Mumbach, Zenggang Pan, Kenneth M Murphy, Yasodha Natkunam, Howard Y Chang, Jinah Kim
Distinguishing classical dendritic cells from other myeloid cell types is complicated by the shared expression of cell surface markers. ZBTB46 is a zinc finger and BTB domain-containing transcription factor, which is expressed by dendritic cells and committed dendritic cell precursors, but not by plasmacytoid dendritic cells, monocytes, macrophages, or other immune cell populations. In this study, we demonstrate that expression of ZBTB46 identifies human dendritic cell neoplasms. We examined ZBTB46 expression in a range of benign and malignant histiocytic disorders and found that ZBTB46 is able to clearly define the dendritic cell identity of many previously unclassified histiocytic disease subtypes...
May 9, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29732477/effectiveness-of-rituximab-containing-treatment-regimens-in-idiopathic-multicentric-castleman-disease
#3
Yujun Dong, Lu Zhang, Lin Nong, Lihong Wang, Zeyin Liang, Daobin Zhou, David C Fajgenbaum, Hanyun Ren, Jian Li
Human herpes virus type 8 (HHV-8)-negative, idiopathic multicentric Castleman disease (iMCD) is a rare lymphoproliferative disease often involving constitutional symptoms, cytopenias, and multiple organ system dysfunction. In China, the majority of MCD cases are HHV-8 negative. Given that siltuximab, the only FDA-approved treatment for iMCD is not available in China; rituximab- and cyclophosphamide-containing regimens are often used in the treatment of Chinese iMCD patients. To evaluate the efficacy of rituximab in this rare and heterogeneous disease, clinical and pathological data from 27 cases of iMCD were retrospectively analyzed from two large medical centers in China...
May 7, 2018: Annals of Hematology
https://www.readbyqxmd.com/read/29720207/the-t-14-18-translocation-is-absent-from-endothelial-and-follicular-dendritic-cells-of-follicular-lymphoma-fl-and-shows-heterogeneous-presence-in-preserved-fl-mantle-zones
#4
Perikles Kosmidis, Barbara Mankel, Falko Fend, Patrick Adam
BACKGROUND: The translocation t(14;18)(q32;q21) is the genetic hallmark of follicular lymphoma (FL) and can be observed in 85-90% of cases. Whether the translocation is restricted to cells with germinal center B-cell phenotype or can be observed in other cell types of the microenvironment remains debated. Of interest, cases of associated histiocytic and dendritic cell sarcomas arising in the background of FL have been shown to be clonally related and carry the t(14;18), suggesting a "transdifferentiation" of the malignant FL clone into a neoplasm of a different hematopoietic lineage...
May 2, 2018: Diagnostic Pathology
https://www.readbyqxmd.com/read/29715708/the-feasibility-of-thoracoscopic-left-pneumonectomy
#5
Hao Xu, Linyou Zhang
OBJECTIVE:  In this study, we describe our experience with video-assisted thoracoscopic surgery (VATS) left pneumonectomy as a treatment for advanced malignant and benign diseases. METHODS:  Patients who underwent VATS left pneumonectomy in our clinic between October 2013 and August 2017 were retrospectively evaluated. VATS pneumonectomy was successfully completed in 46 patients. We reviewed and analyzed the characteristics of the patients in addition to intraoperative parameters, chest tube duration, length of hospital stay, morbidity, and mortality...
May 1, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/29683532/cytologic-diagnosis-of-follicular-dendritic-cell-sarcoma-a-case-report-and-review-of-literature
#6
Anupurva Dutta, Arun Pattatheyil, Paromita Roy, Indu Arun
Follicular dendritic cell sarcoma (FDCS) is a rare neoplasm of the accessory immune cells that can present at both nodal and extranodal sites1 . A high index of suspicion is crucial so as to include FDCS in the differential diagnosis of a spindle cell neoplasm in the appropriate clinical and morphological context. However, the morphological overlap with other tumors makes this entity a diagnostic challenge unless supplemented by other ancillary tests like immunohistochemistry and ultrastructural studies. This article is protected by copyright...
April 23, 2018: Cytopathology: Official Journal of the British Society for Clinical Cytology
https://www.readbyqxmd.com/read/29673124/liquid-based-cytology-in-the-diagnosis-of-langerhans-cell-sarcoma-a-case-report
#7
Kazumi Iwasaki, Yasuhiro Sakai, Masaki Mori, Yoshiaki Imamura
Langerhans cell sarcoma (LCS) is an extremely rare malignant dendritic cell neoplasm with Langerhans cell differentiation. Conventional cytology, based on cell morphology alone, cannot render a cytological diagnosis of LCS because immunochemical analysis is essential to identify the Langerhans cell immunophenotype. We present a case illustrating the value of liquid-based cytology with immunocytochemistry as compared with conventional cytology, along with histological and immunohistochemical findings. A 92-year-old woman presented with a 1-month history of progressive right cervical lymphadenopathy...
April 19, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29660568/interdigitating-dendritic-cell-sarcoma-clinicopathologic-study-of-8-cases-with-review-of-the-literature
#8
REVIEW
Tian Xue, Xiang-Nan Jiang, Wei-Ge Wang, Xiao-Yan Zhou, Xiao-Qiu Li
To investigate the clinicopathologic features and differential diagnoses of interdigitating dendritic cell sarcoma (IDCS), the clinical, morphological and immunohistochemical features of eight cases of IDCS were collected and analyzed. Three patients were males and five were females, the mean age and the median age were 56.5 years and 57 years respectively. Clinically, the majority of cases involved lymph nodes. Microscopically, neoplastic cells were spindle or ovoid, forming fascicles or whorls. Every case had active mitosis figures...
March 30, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29523417/molecular-and-cellular-interplay-in-virus-induced-tumors-in-solid-organ-recipients
#9
Alessia Gallo, Monica Miele, Ester Badami, Pier Giulio Conaldi
Patients following solid organ transplantation show a higher risk of developing cancer compared to the general population. Elevated risk is likely due to the interplay of a combination of factors, such as chronic inflammation, coexisting medical conditions, immunosuppressive regimen and persistent infection with oncogenic viruses. In addition, the tumor microenvironment plays a pivotal role in cancer progression, by driving recruitment and in situ differentiation of anti-inflammatory cells of the adaptive and innate immune system such as regulatory T cells, Th17, Dendritic Cells, Myeloid Derived Suppressor Cells, Type 2 Macrophages...
February 16, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29496669/next-generation-sequencing-of-idiopathic-multicentric-and-unicentric-castleman-disease-and-follicular-dendritic-cell-sarcomas
#10
Alexandra Nagy, Aparna Bhaduri, Nahid Shahmarvand, Jahanbanoo Shahryari, James L Zehnder, Roger A Warnke, Tariq Mughal, Siraj Ali, Robert S Ohgami
Castleman disease (CD) is a rare lymphoproliferative disorder subclassified as unicentric CD (UCD) or multicentric CD (MCD) based on clinical features and the distribution of enlarged lymph nodes with characteristic histopathology. MCD can be further subtyped based on human herpes virus 8 (HHV8) infection into HHV8-associated MCD, HHV8- /idiopathic MCD (iMCD), and polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin change (POEMS)-associated MCD. In a subset of cases of UCD, an associated follicular dendritic cell sarcoma (FDCS) may be seen...
March 13, 2018: Blood Advances
https://www.readbyqxmd.com/read/29481803/tumor-targeting-salmonella-typhimurium-a1-r-is-a-highly-effective-general-therapeutic-for-undifferentiated-soft-tissue-sarcoma-patient-derived-orthotopic-xenograft-nude-mouse-models
#11
Kentaro Igarashi, Kei Kawaguchi, Tasuku Kiyuna, Kentaro Miyake, Masuyo Miyake, Arun S Singh, Mark A Eckardt, Scott D Nelson, Tara A Russell, Sarah M Dry, Yunfeng Li, Norio Yamamoto, Katsuhiro Hayashi, Hiroaki Kimura, Shinji Miwa, Hiroyuki Tsuchiya, Shree Ram Singh, Fritz C Eilber, Robert M Hoffman
Undifferentiated soft tissue sarcoma (USTS) is a recalcitrant and heterogeneous subgroup of soft tissue sarcoma with high risk of metastasis and recurrence. Due to heterogeneity of USTS, there is no reliably effective first-line therapy. We have generated tumor-targeting Salmonella typhimurium A1-R (S. typhimurium A1-R), which previously showed strong efficacy on single patient-derived orthotopic xenograft (PDOX) models of Ewing's sarcoma and follicular dendritic cell sarcoma. In the present study, tumor resected from 4 patients with a biopsy-proven USTS (2 undifferentiated pleomorphic sarcoma [UPS], 1 undifferentiated sarcoma not otherwise specified [NOS] and 1 undifferentiated spindle cell sarcoma [USS]) were grown orthotopically in the biceps femoris muscle of mice to establish PDOX models...
March 18, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29440239/follicular-dendritic-cell-sarcoma-of-the-duodenum-an-extremely-rare-entity
#12
Atakelet Ferede, Roisin O'Connor, Anthony Stafford, Niall Swan
Extranodal follicular dendritic cell sarcoma (FDCS) is a very rare tumour, only reported in case reports and case series. It poses diagnostic and management challenge both to the clinician and pathologist. We present such a rare case of duodenal FDCS in a 56-year-old woman who was recently managed in our institution. Repeated pre surgical biopsies were non-diagnostic and the final diagnosis was made only after surgical excision of the tumour and with the help of histopathological and immunohistochemical studies...
February 11, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29437813/follicular-dendritic-cell-sarcoma-of-the-porta-hepatis
#13
Jay A Patel, James B Piper, Brant G Wang
Follicular dendritic cell (FDC) sarcoma is a very rare neoplasm which commonly involves the lymph nodes and less commonly involves extranodal organs such as the liver. Most cases of FDC sarcoma are idiopathic, however some cases are associated with other disease states. Management of FDC sarcoma is primarily focused on surgical resection of the mass, and secondarily focused on radiotherapy, chemotherapy and/or biologic pharmacotherapy. We report the case of a patient who was found to have FDC sarcoma presenting as an obstructing mass of the porta hepatis, a manifestation which does not appear to be reported in the literature...
February 8, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29429163/-clinicopathologic-features-and-prognosis-of-inflammatory-pseudotumor-like-follicular-dendritic-cell-sarcomas-in-liver-and-spleen-an-analysis-of-seven-cases
#14
Y L Wu, F Wu, L Yang, H Sun, X C Yan, G J Duan
Objective: To investigate the clinicopathological features and prognostic parameters of the inflammatory pseudotumor-like follicular dendritic cell sarcoma (IPT-like FDCS) of liver and spleen. Methods: Ninteen cases of inflammatory pseudotumor (IPT) and 5 cases of IPT-like FDCS of the liver and spleen were collected at the First Affiliated Hospital, Army Medical University from 2006 to 2016. HE sections, immunohistochemical staining, and Epstein-Barr virus encoded nuclear RNA (EBER) in situ hybridization were reviewed along with a summary of the literature...
February 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29420353/clusterin-in-neuroendocrine-epithelial-neoplasms-absence-of-expression-in-a-well-differentiated-tumor-suggests-a-jejunoileal-origin
#15
Thomas W Czeczok, Kristen M Stashek, Jessica E Maxwell, Thomas M O'Dorisio, James R Howe, Jason L Hornick, Andrew M Bellizzi
Clusterin, a widely expressed, tissue-specific glycoprotein, is a diagnostic marker of several tumor types, including anaplastic large cell lymphoma, follicular dendritic cell sarcoma, and tenosynovial giant cell tumor. A recent study has suggested it is highly expressed by well-differentiated neuroendocrine tumors (NET) arising at most anatomic sites, with the exception of jejunoileal tumors, and that it is similarly not expressed by poorly differentiated neuroendocrine carcinomas (NEC). We sought to validate this result in a large cohort of NETs and NECs...
February 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29395417/retroperitoneal-follicular-dendritic-cell-sarcoma-in-a-young-woman-diagnosis-and-treatment-challenges
#16
Rym Bouriga, Nihed Abdessaied, Makram Hochlef, Najoua Mallat, Mohamed Mahjoub, Badereddine Sriha, Slim Ben Ahmed
INTRODUCTION: Follicular dendritic cell sarcoma (FDCS) is an uncommon tumor that usually arises in lymph nodes, especially in the cervical, mediastinal, or axillary areas, but rarely in extranodal sites. Few cases have been reported in English literature so far. The scarcity may be partially due to under-recognition of this entity. Through this case report we analyzed the difficulties of clinical and pathological diagnosis of this rare tumor with its unusual location mistaken it with gynecological cancer's iliac lymph nodes metastases...
January 6, 2018: Current Problems in Cancer
https://www.readbyqxmd.com/read/29341959/indeterminate-dendritic-cell-sarcoma-in-a-patient-with-myelodysplastic-syndrome
#17
Jia Liu, Song Zheng, Jiu-Hong Li, Ying Guo, Li-Tao Zhang, Xing-Hua Gao, Hong-Duo Chen
No abstract text is available yet for this article.
January 16, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29327713/expression-of-enhancer-of-zeste-homolog-2-ezh2-protein-in-histiocytic-and-dendritic-cell-neoplasms-with-evidence-for-p-erk1-2-related-but-not-myc-or-p-stat3-related-cell-signaling
#18
Xuejun Tian, Jie Xu, Christopher Fletcher, Jason L Hornick, David M Dorfman
EZH2 is an important enzymatic subunit of the epigenetic regulator polycomb repressive complex 2 (PRC2), which controls gene silencing through post-translational modification, and is overexpressed in various carcinomas and hematopoietic neoplasms. We found that the majority of cases of histiocytic and dendritic cell neoplasms, including histiocytic sarcoma, follicular dendritic cell sarcoma, Langerhans cell histiocytosis, and interdigitating dendritic cell sarcoma, show strong EZH2 expression by immunohistochemical staining, in contrast to benign histiocytic lesions and normal cellular counterparts, which did not show EZH2 expression, suggesting that this molecule may function as an oncogenic protein in these neoplasms...
April 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29287022/inflammatory-pseudotumor-like-follicular-dendritic-cell-sarcoma-of-the-spleen-computed-tomography-imaging-characteristics-in-5-patients
#19
Xiumei Li, Zhenshan Shi, Ruixiong You, Yueming Li, Dairong Cao, Renjie Lin, Xinming Huang
OBJECTIVES: The purpose of this study was to retrospectively review the computed tomography (CT) and clinicopathological characteristics of inflammatory pseudotumor (IPT)-like follicular dendritic cell sarcoma (FDCS) of the spleen in 5 patients. METHODS: Clinical, pathologic, and CT imaging findings of 5 patients with IPT-like FDCS of the spleen were reviewed and analyzed. Computed tomography imaging and pathologic features were compared. RESULTS: Abdominal unenhanced CT revealed a well-defined hypodense mass in the spleen with complex internal architecture with focal necrosis and/or speckle-strip calcification...
December 28, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29280411/the-potential-of-the-cmb305-vaccine-regimen-to-target-ny-eso-1-and-improve-outcomes-for-synovial-sarcoma-and-myxoid-round-cell-liposarcoma-patients
#20
Seth M Pollack
Synovial Sarcoma (SS) and Myxoid Round Cell Liposarcoma (MRCL) are devastating sarcoma subtypes with few treatment options and poor outcomes in the advanced setting. However, both these diseases may be ideal for novel immunotherapies targeting the cancer-testis antigen, NY-ESO-1. Areas covered: In this review, we discuss the novel NY-ESO-1 targeted vaccine regimen, CMB305. This regimen uses a unique integration-deficient, dendritic-cell targeting lentiviral vector from the ZVex® platform, LV305, in order to prime NY-ESO-1 specific T cells...
February 2018: Expert Review of Vaccines
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