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https://www.readbyqxmd.com/read/28822312/ossifying-fibromyxoid-tumor-of-the-trunk-mimicking-hydatid-cyst-a-case-report
#1
Nihed Abdessayed, Sarra Mestiri, Houssem Ammar, Ahlem Bdioui, Amine Chhaidar, Omar Toumi, Nozha Mhamdi, Rahul Gupta, Marwa Guerfela, Moncef Mokni
INTRODUCTION: Ossifying fibromyxoid tumor (OFMT) is a rare lesion that generally occurs in the soft tissues of proximal limbs, head or neck and presents as a slowly growing mass. Abdominal or trunk locations are extremely rare. PRESENTATION OF CASE: We report a case of 50-year-old man who presented with a painless, slow growing epigastric mass for 5 years. Radiologic assessment revealed a well circumscribed median subcutaneous parietal mass lesion present in front of the xiphoid process suspicious of a calcified hydatid cyst...
July 22, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28819591/aggressive-vertebral-body-hemangioma-causing-compressive-myelopathy-two-case-reports
#2
Denver Steven Pinto, V Ravi Hoisala, Pavan Gupta, Parthasarathy Sarkar
INTRODUCTION: Hemangiomas are benign tumors characterized by proliferation of blood vessels. A few hemangiomas are aggressive, characterized by bone expansion and extraosseous extension. These benign tumors may be mistaken for metatasis resulting in unnecessary biopsies, which have a high risk of hemorrhage. These hemangiomas can spread not just into the paraspinal soft tissues but also into the epidural region of the spinal canal causing cord compression and paraparesis. These clinical symptoms can be relieved by surgical decompression of the posterior elements, embolization or radiotherapy...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28819402/pd-l1-expression-is-associated-with-foxp3-regulatory-t-cell-infiltration-of-soft-tissue-sarcoma-and-poor-patient-prognosis
#3
Yi Que, Wei Xiao, Yuan-Xiang Guan, Yao Liang, Shu-Mei Yan, Huo-Ying Chen, Qiao-Qiao Li, Bu-Shu Xu, Zhi-Wei Zhou, Xing Zhang
Background: Programmed death ligand-1(PD-L1) functions as a negative mediator of immune response through different pathways in anti-tumor immunity. Recent studies have reported that PD-L1 plays a pivotal role in the function of regulatory T-cells (Tregs). Although increases in FOXP3+ Tregs infiltration and PD-L1 expression have been revealed in several cancers, their correlation with soft tissue sarcoma remains unknown. Methods: We included 163 cases of soft tissue sarcoma who were diagnosed and underwent extensive and radical resection at the Sun Yat-sen University Cancer Center, Guangzhou, China, from 2000-2010...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28817827/role-of-next-generation-sequencing-as-a-diagnostic-tool-for-the-evaluation-of-bone-and-soft-tissue-tumors
#4
Kinga Szurian, Karl Kashofer, Bernadette Liegl-Atzwanger
Bone and soft-tissue tumors are in general rare. Diagnosing these tumors is challenging based on the significant number of different tumor entities, the rareness of these tumors, and the considerable morphological heterogeneity which can be found within a single tumor entity. Considering that more than half of the described soft-tissue tumors and approximately 25% of the bone tumors harbor recurrent genetic alterations, the use of auxiliary molecular examinations should be strongly considered. Molecular analyses are important to confirm the diagnosis, to guide treatment, to provide information about prognosis, and to allow patient recruitment for basket trials based on the molecular signature of a tumor...
August 18, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28817624/ephb4-ephrinb2-therapeutics-in-rhabdomyosarcoma
#5
Matthew E Randolph, Megan M Cleary, Zia Bajwa, Matthew N Svalina, Michael C Young, Atiya Mansoor, Pali Kaur, Carol J Bult, Martin W Goros, Joel E Michalek, Sunny Xiang, James Keck, Valery Krasnoperov, Parkash Gill, Charles Keller
Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma affecting children and is often diagnosed with concurrent metastases. Unfortunately, few effective therapies have been discovered that improve the long-term survival rate for children with metastatic disease. Here we determined effectiveness of targeting the receptor tyrosine kinase, EphB4, in both alveolar and embryonal RMS either directly through the inhibitory antibody, VasG3, or indirectly by blocking both forward and reverse signaling of EphB4 binding to EphrinB2, cognate ligand of EphB4...
2017: PloS One
https://www.readbyqxmd.com/read/28817404/primary-renal-sarcomas-with-bcor-ccnb3-gene-fusion-a-report-of-2-cases-showing-histologic-overlap-with-clear-cell-sarcoma-of-kidney-suggesting-further-link-between-bcor-related-sarcomas-of-the-kidney-and-soft-tissues
#6
Pedram Argani, Yu-Chien Kao, Lei Zhang, Carlos Bacchi, Andres Matoso, Rita Alaggio, Jonathan I Epstein, Cristina R Antonescu
We report 2 primary renal sarcomas demonstrating BCOR-CCNB3 gene fusions that have recently been identified in undifferentiated round cell sarcomas of bone and soft tissue. These neoplasms occurred in male children aged 11 and 12 years, and both were cystic as a result of entrapment and dilatation of native renal tubules. Both cases were composed of variably cellular bland spindle cells with fine chromatin set in myxoid stroma and separated by a branching capillary vasculature. Both neoplasms demonstrated immunoreactivity for BCOR, cyclin D1, TLE1, and SATB2 in the spindle neoplastic cells and negativity in the prominent capillary vasculature...
August 16, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28812461/soft-tissue-perineurioma-in-a-child-with-neurofibromatosis-type-1-a-case-report-and-review-of-the-literature
#7
Mudher Al-Adnani
Soft tissue perineurioma is a rare benign peripheral nerve sheath tumor, especially in children. This manuscript presents an unusual case of soft tissue perineurioma in a 10-year-old boy with neurofibromatosis type 1. The patient presented with a lump in the region of the right breast. A subcutaneous, well circumscribed mass was removed. The cut surface was cream with a vaguely nodular appearance. Histology showed a spindle cell lesion with variable architecture and biphasic morphology. There was no nuclear atypia or pleomorphism...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28811330/epithelial-to-mesenchymal-and-mesenchymal-to-epithelial-transition-in-mesenchymal-tumors-a-paradox-in-sarcomas
#8
REVIEW
Giuseppina Sannino, Aruna Marchetto, Thomas Kirchner, Thomas G P Grünewald
The epithelial-to-mesenchymal transition (EMT) is a reversible process comprised of various subprograms via which epithelial cells reduce their intercellular adhesions and proliferative capacity while gaining a mesenchymal phenotype with increased migratory and invasive properties. This process has been well described in several carcinomas, which are cancers of epithelial origin, and is crucial to metastatic tumor cell dissemination and drug resistance. In contrast, the precise role of EMT-related processes in tumors originating from mesenchymal tissues, such as bone and soft-tissues sarcomas, is still largely unclear...
August 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28810297/-clinical-and-pathologic-features-of-extrapleural-sarcomatoid-mesothelioma
#9
M C Wei, S J Yang
Objective: To investigate the morphological features, diagnosis and differential diagnosis of extrapleural sarcomatoid malignant mesothelioma (SMM). Methods: Six cases of extrapleural SMM were evaluated for their clinical, histological, immunohistochemical features, and prognosis. Results: Patients included 3 men and 3 women, with a median age of 60 years (range 41-75 years). All patients had no asbestos exposure in history and no pleural lesions. The tumors involved peritoneum (3 cases), bone (2 cases), and neck soft tissue (1 case)...
August 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28808412/cross-cultural-adaptation-translation-and-validation-of-the-toronto-extremity-salvage-score-for-extremity-bone-and-soft-tissue-tumor-patients-in-netherlands
#10
Julie J Willeumier, C W P G van der Wal, Robert J P van der Wal, P D S Dijkstra, Thea P M Vliet Vlieland, Michiel A J van de Sande
PURPOSE: The aim of this study was to translate and culturally adapt the Toronto Extremity Salvage Score (TESS) to Dutch and to validate the translated version. METHODS: The TESS lower and upper extremity versions (LE and UE) were translated to Dutch according to international guidelines. The translated version was validated in 98 patients with surgically treated bone or soft tissue tumors of the LE or UE. To assess test-retest reliability, participants were asked to fill in a second questionnaire after one week...
2017: Sarcoma
https://www.readbyqxmd.com/read/28808411/preoperative-factors-associated-with-infiltrative-histologic-growth-patterns-in-extremity-soft-tissue-sarcoma
#11
Jong Woong Park, Han-Soo Kim, Cheol Lee, Hye Jin Yoo, Ji Yeon Yun, Ilkyu Han
Soft tissue sarcoma (STS) with an infiltrative histologic growth pattern, when compared to STS with an expansile pattern, may pose difficulties in local control. Preoperative assessment of the presence of infiltrative histologic growth pattern would be helpful in deciding treatment strategies. A review of 144 patients who underwent surgery for extremity STS was performed. Microscopically, the histologic growth pattern was defined as infiltrative if the penetration of the tumor cells into the surrounding tissue was observed...
2017: Sarcoma
https://www.readbyqxmd.com/read/28807248/tumor-model-for-surgical-simulation-to-assess-a-minimally-invasive-endoscopic-approach-for-midcheek-mass-removal
#12
Giovanni Dell' Aversana Orabona, Antonio Romano, Paola Bonavolontà, Vincenzo Abbate, Alfonso Manfuso, Giorgio Iaconetta, Bernhard Hirt, Luigi Califano
INTRODUCTION: The midcheek is considered one of the most important facial area due to its involvement in mimic expression and communication. Pathology of this district is complex due to the variety of soft tissue belonging to the face. We propose a surgical simulation, to assess the feasibility of a new minimally invasive endoscopic approach for midcheek mass removal. TECHNICAL REPORT: This study was performed on four cadavers, at the Anatomy Laboratory of the University of Tubingen...
September 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28806250/recurrent-leiomyosarcoma-of-external-oblique-muscle-detected-on-99mtc-mdp-spect-ct
#13
Taisong Wang, Yan Xing, Wenli Qiao, Jinhua Zhao
A Tc-MDP bone scintigraphy was performed in an 88-year-old man with a history of right external oblique muscle leiomyosarcoma, which was resected 8 months ago. The static images showed abnormal tracer uptake in the region of resection bed. SPECT/CT images demonstrated that the increased activity was from a partially calcified soft tissue mass in external oblique muscle. Subsequent pathological examination confirmed recurrent tumor.
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28802505/soft-tissue-tumors-of-uncertain-histogenesis-a-review-for-dermatopathologists
#14
REVIEW
Darya Buehler, Paul Weisman
The mesenchymal tumors discussed herein represent a heterogeneous group of neoplasms with distinctive morphologic, immunophenotypic, and molecular genetic features. These uncommon tumors often arise in the dermis and subcutis and can pose a major diagnostic challenge to dermatopathologists because they closely mimic melanoma, carcinoma, fibrous histiocytoma, schwannoma, or granulomatous inflammation. This article reviews the clinical presentation, histopathology, differential diagnosis, and diagnostic pitfalls of epithelioid sarcoma, clear cell sarcoma, perivascular epithelioid cell tumor, ossifying fibromyxoid tumor, pleomorphic hyalinizing angiectatic tumor, and hemosiderotic fibrolipomatous tumor...
September 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28802504/cutaneous-malignant-vascular-neoplasms
#15
REVIEW
Wonwoo Shon, Steven D Billings
Accurate diagnosis of cutaneous malignant vascular tumors, including angiosarcoma and epithelioid hemangioendothelioma, is critical for determination of appropriate clinical management and prognosis. Although there have been significant advances in understanding genetic aspects of cutaneous vascular biology, differential diagnosis of malignant vascular tumor involving skin and superficial soft tissue is a frequent source of difficulty. This brief overview highlights the clinicopathologic features of primary and secondary cutaneous angiosarcoma and epithelioid hemangioendothelioma and also provides a short summary of newer molecular data...
September 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/28800578/angiomyofibroblastoma-of-the-broad-ligament-a-case-report
#16
Hsiao-Chin Huang, Ying-Ren Chen, Horng-Der Tsai, Ya-Min Cheng, Yi-Hsuan Hsiao
Angiomyofibroblastoma (AMF) is a distinctive, rare, benign mesenchymal tumor that often occurs in the lower genital region of women. The most commonly reported location of an AMF is in the vulvovaginal area. We describe a rare case of an AMF located in the broad ligament in a 47-yr-old woman. The patient experienced menorrhagia, dysmenorrhea, and subsequent menstrual spotting. She sought help at the National Cheng Kung University Hospital. Ultrasonography showed an echo-complex mass in the left adnexal area...
September 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28799063/clinical-outcomes-of-patients-with-epithelioid-sarcomas-impact-and-management-of-nodal-metastasis
#17
Hidetatsu Outani, Yoshinori Imura, Takaaki Tanaka, Satoshi Takenaka, Kazuya Oshima, Kenichiro Hamada, Shigeki Kakunaga, Susumu Joyama, Norifumi Naka, Ikuo Kudawara, Takafumi Ueda, Nobuhito Araki, Hideki Yoshikawa
PURPOSE: An epithelioid sarcoma is a rare histological subtype of a soft tissue sarcoma with a high local recurrence rate, which frequently shows lymph node metastasis. However, because of the rarity of this tumor, the impact of nodal metastasis and its appropriate management remain unclear. The present study investigated the clinical outcomes of patients with epithelioid sarcomas, with a focus on lymph node metastasis. METHODS: We retrospectively evaluated the clinical outcomes of 27 patients with epithelioid sarcomas treated between 1985 and 2015...
August 10, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28797510/soft-tissue-tumors-rarely-presenting-primary-in-bone-diagnostic-pitfalls
#18
REVIEW
Marta Sbaraglia, Alberto Righi, Marco Gambarotti, Daniel Vanel, Piero Picci, Angelo P Dei Tos
Primary bone sarcomas represent extremely rare entities. The use of now abolished labels, such as malignant fibrous histiocytoma and hemangiopericytoma, has significantly hampered the chance of identifying specific entities. It is now accepted that a broad variety of mesenchymal malignancies most often arising on the soft tissue may actually present as primary bone lesions. A more accurate morphologic partition is justified based on availability of distinct therapeutic options. An integrated diagnostic approach represents the only way to achieve a correct classification...
September 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28797505/vascular-tumors-of-bone-the-evolvement-of-a-classification-based-on-molecular-developments
#19
REVIEW
David G P van IJzendoorn, Judith V M G Bovée
The classification of vascular tumors of bone has been under debate over time. Vascular tumors in bone are rare, display highly overlapping morphology, and, therefore, are considered difficult by pathologists. Compared with their soft tissue counterparts, they are more often multifocal and sometimes behave more aggressively. Over the past decade, with the advent of next-generation sequencing, recurrent molecular alterations have been found in some of the entities. The integration of morphology and molecular changes has led to a better characterization of these separate entities...
September 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28796694/myoepithelioma-of-soft-tissue-with-both-squamous-and-adipocytic-metaplasia
#20
Ashley Elsensohn, Joshua H Mo, Tyler J Maly, Patrick K Lee, Sebastien de Feraudy
Soft tissue, or cutaneous, myoepitheliomas are rare tumors arising solely from a myoepithelial origin. These neoplasms are typically associated with uncertain differentiation and can contain cellular morphologies that include spindle, plasmacytoid, epithelioid, or clear cell forms. Soft tissue myoepitheliomas are commonly found on the lower limbs and in the pelvic girdle but can occur throughout the body. A small minority display heterogenous differentiation, typically osseous or cartilaginous in nature. Squamous and adipocytic cell types are much rarer...
August 3, 2017: American Journal of Dermatopathology
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