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Primary malignant bone tumors

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https://www.readbyqxmd.com/read/28302236/osteogenic-sarcoma-of-mandible
#1
Manas Bajpai, Nilesh Pardhe, Betina Chandolia, Manika Arora
Osteosarcoma (OS) is a malignant neoplasm characterised by the formation of osteoid matrix by neoplastic cells. It is the most common primary malignant bone tumor accounting for 20% of all sarcomas, although its occurrence in the jaw is rare. It shows typical clinical behaviour but varied radiological and histopathological features. It presents various histological aspects. We report a case of 30-year male presented with a painful swelling of mandible, diagnosed as OS after histopathological evaluation.
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28289810/non-odontogenic-tumors-of-the-facial-bones-in-children-and-adolescents-role-of-multiparametric-imaging
#2
REVIEW
Minerva Becker, Salvatore Stefanelli, Anne-Laure Rougemont, Pierre Alexandre Poletti, Laura Merlini
Tumors of the pediatric facial skeleton represent a major challenge in clinical practice because they can lead to functional impairment, facial deformation, and long-term disfigurement. Their treatment often requires a multidisciplinary approach, and radiologists play a pivotal role in the diagnosis and management of these lesions. Although rare, pediatric tumors arising in the facial bones comprise a wide spectrum of benign and malignant lesions of osteogenic, fibrogenic, hematopoietic, neurogenic, or epithelial origin...
March 13, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28287344/ewing-s-sarcoma%C3%A2-of-the-cranial-vault-a-case-report
#3
Jihene Feki, Zeineb Guermazi, Brahim Kammoun, Afef Khanfir, Nabil Toumi, Tahiya Boudawara, Zaher Boudawara, Jamel Daoud, Mounir Frikha
Ewing's sarcoma is a malignant tumor that mainly affects young patients. It represents 10% of primary malignant tumors of the bone and 3% of malignant tumors of the child. Cranial localization is extremely rare representing less than 1% of all the localizations. We report a case of a 10-year-old girl who presented with an intracranial hypertension syndrome with left parietal mass of progressive installation. The X-ray skull showed a lytic lesion with irregular margins involving the left parietal bone. Brain magnetic resonance imaging revealed extensive parietal bone destruction involving both the inner and outer tables...
March 13, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/28276320/microrna-107-promotes-proliferation-migration-and-invasion-of-osteosarcoma-cells-by-targeting-tropomyosin-1
#4
Rui Jiang, Chao Zhang, Guangyao Liu, Rui Gu, Han Wu
Osteosarcoma is the most common primary bone malignancy manifested predominantly in children and young adults. Studiesindicated that miR-107 was involved in the pathogenesis of osteosarcoma and TPM1 acted as tumor suppressor in multiple cancers. In this study, we analyzed the effect of miR-107 on human osteosarcoma cells and investigated the mechanism that TPM1 involved. miR-107 expressions in human osteosarcoma tissues and cells were analyzed by quantitative real-time PCR (qRT-PCR). Human osteosarcoma U2OS cells were transfected with miR-107 mimic, inhibitor or scramble controls to evaluate miR-107 effect on cellular migration/invasion, cell viability and apoptosis...
March 8, 2017: Oncology Research
https://www.readbyqxmd.com/read/28272671/hodgkin-lymphoma-in-a-case-of-chronic-myeloid-leukemia-treated-with-tyrosine-kinase-inhibitors
#5
Smeeta Gajendra, Archana Sharma, Rashi Sharma, Sunil Kumar Gupta, Nitin Sood, Ritesh Sachdev
Chronic myeloid leukemia (CML) is characterized by increased and unregulated proliferation of granulocytic lineage in the bone marrow and presence of these immature myeloid cells in the peripheral blood with presence of Philadelphia (Ph) chromosome. Tyrosine kinase inhibitors are the most important drugs in the CML therapy and provide long disease-free survival. Due to the increased survival of CML patients with continual administration of these drugs, the chance of development of secondary malignancies may increase...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28272661/primary-paediatric-renal-primitive-neuroectodermal-tumor-a-case-report-and-review-of-the-literature
#6
Binny Khandakar, Moumita Maiti, Soumit Dey, Prasenjit Sen Ray, Palas Bhattac Haryya, Ranu Sarkar
Ewing sarcoma/primitive neuroectodermal tumor (PNET) is a high-grade malignant neoplasm commonly affecting bones of the thoracic region. Primary Ewing sarcoma/PNET of the kidney is exceptional; it commonly affects young adults and is rarely reported in children. Here we describe a case of renal PNET in a 10-year-old girl who presented at our institute with haematuria and abdominal lump. Computer tomography scan revealed a huge mass in the right kidney. Computer tomography-guided aspiration from the mass showed cytomorphological features of a small blue round cell tumor...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28270344/secondary-myeloid-neoplasms-bone-marrow-cytogenetic-and-histological-features-may-be-relevant-to-prognosis
#7
Roberta Sandra da Silva Tanizawa, Maria Claudia Nogueira Zerbini, Ricardo Rosenfeld, Cristina Aiko Kumeda, Raymundo Soares Azevedo, Sheila Aparecida Coelho Siqueira, Elvira Deolinda Rodrigues Pereira Velloso
BACKGROUND: Secondary myeloid neoplasms comprise a group of diseases arising after chemotherapy, radiation, immunosuppressive therapy or from aplastic anemia. Few studies have addressed prognostic factors in these neoplasms. METHOD: Forty-two patients diagnosed from 1987 to 2008 with secondary myeloid neoplasms were retrospectively evaluated concerning clinical, biochemical, peripheral blood, bone marrow aspirate, biopsy, and immunohistochemistry and cytogenetic features at diagnosis as prognostic factors...
January 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/28260090/actin-like-protein-6a-is-a-novel-prognostic-indicator-promoting-invasion-and-metastasis-in-osteosarcoma
#8
Wei Sun, Wanchun Wang, Jian Lei, Hui Li, Yi Wu
Osteosarcoma harbors highly metastatic properties, accounting for postoperative recurrence and metastasis. Actin-like protein 6A (ACTL6A) regulates cell proliferation, migration and differentiation. However, the biologic role of ACTL6A in osteosarcoma remains unknown. In this study, the results showed that, by analysis of frozen fresh primary tumor tissues, matched non-cancerous bone tissues (NCBTs) and biopsy lung metastatic nodule tissues from 30 osteosarcoma patients after radical surgical resection, ACTL6A was overexpressed in osteosarcoma tissues compared with matched NCBTs, and its expression level was associated with osteosarcoma metastasis...
February 23, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28248728/clinicopathologic-features-of-the-non-cns-primary-ewing-sarcoma-family-of-tumors-in-the-head-and-neck-region
#9
Chang Gok Woo, Bora Lee, Joon Seon Song, Kyung-Ja Cho
Ewing sarcoma family of tumor (ESFT) is a group of malignant neoplasms that affect children and young adults. Primary ESFT does not commonly arise from the head and neck region. This study aimed to elucidate the clinicopathologic characteristics of ESFT of the head and neck region except for central nervous system primitive neuroectodermal tumors. Among the 207 cases of ESFT of the bone and soft tissue, diagnosed at Asan Medical Center during a 20-year period, 25 (12.1%) involved the head and neck region. Of those, 21 were available for histologic, immunohistochemical, and molecular studies...
February 28, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28225867/investigating-ego-modules-and-pathways-in-osteosarcoma-by-integrating-the-egonet-algorithm-and-pathway-analysis
#10
X Y Chen, Y H Chen, L J Zhang, Y Wang, Z C Tong
Osteosarcoma (OS) is the most common primary bone malignancy, but current therapies are far from effective for all patients. A better understanding of the pathological mechanism of OS may help to achieve new treatments for this tumor. Hence, the objective of this study was to investigate ego modules and pathways in OS utilizing EgoNet algorithm and pathway-related analysis, and reveal pathological mechanisms underlying OS. The EgoNet algorithm comprises four steps: constructing background protein-protein interaction (PPI) network (PPIN) based on gene expression data and PPI data; extracting differential expression network (DEN) from the background PPIN; identifying ego genes according to topological features of genes in reweighted DEN; and collecting ego modules using module search by ego gene expansion...
February 16, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28225182/double-sequential-encrypted-targeting-sequence-a-new-concept-for-bone-cancer-treatment
#11
Gonzalo Villaverde, Valentina Nairi, Alejandro Baeza, Maria Vallet-Regi
The selective transportation of therapeutic agents to tumoral cells is usually achieved by their conjugation with targeting moieties able to recognize these cells. Unfortunately, simple and static targeting systems usually show selectivity lacks. Herein, double sequential encrypted targeting system is proposed as stimuli-responsive targeting analogue for selectivity enhancement. The system is able to recognize diseased bone tissue in first place, and once there, a hidden secondary targeting group is activated by the presence of an enzyme overproduced in the malignant tissue (cathepsin K), triggering the recognition of diseased cells...
February 22, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28212886/primary-ameloblastoma-of-the-temporal-bone
#12
Andro Košec, Jakov Ajduk, Mihael Ries, Robert Trotić
Ameloblastoma is a locally aggressive tumor derived from odontogenic epithelium. Although benign, its clinical behavior can often exhibit malignant characteristics. It is marked by slow and persistent growth with infiltration of adjacent tissues. Almost 70% occur in the mandible in patients older than 30 years. Recurrence of ameloblastoma from inadequate treatment is frequent. Because of its slow growth, recurrences can present decades after primary surgery. A primary ameloblastoma in an area outside the mandibular, maxillary, and infratemporal fossa regions has not been described in detail to date, with only 1 possible case mentioned in the literature...
January 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28211281/jejunal-metastasis-of-renal-cell-carcinoma
#13
Pamela Estévez Boullosa, Alfonso Martínez Turnes, Roberto Carracedo Iglesias, José Ignacio Rodríguez Prada
A 71-year-old female presented with melena and anemia. She had a past medical history of renal cell carcinoma diagnosed six years earlier and treated with left nephrectomy. Gastroscopy and colonoscopy showed no abnormalities. Renal cell carcinoma (RCC) is the third commonest urological malignancy, and approximately 25-50% of patients develop metastatic disease after surgery of the primary tumor. The most common sites of metastasis involve lung, lymph nodes, liver, bone and adrenal glands.
February 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28210409/primary-leiomyosarcoma-of-the-mandibular-alveolar-mucosa-of-a-12-year-old-child-from-ethiopia-a-case-report
#14
Tewodros Tefera Kenea, Betel Abebe Kebede, Fekadu Mesele Gozjuze, Hagos Kiros, Frank Wilde
Leiomyosarcomas (LMSs) are rare malignant mesenchymal tumors which show smooth-muscle differentiation. Most LMSs involving the oral tissues primarily affect the maxillary sinus, the maxillary or mandibular bone. We present a case of LMS of the mandibular alveolar mucosa, arising in a 12-year-old male child from Ethiopia. A malignant spindle cell-like neoplasm was diagnosed on clinical and radiographic findings as well as on incisional biopsy. The tumor was resected with wide margins. The following histopathologic examination with additional immunohistochemical studies secured the diagnosis LMS...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28207291/small-numbers-big-challenges-adolescent-and-young-adult-cancer-incidence-and-survival-in-new-zealand
#15
Kirsten R Ballantine, Heidi Watson, Scott Macfarlane, Mark Winstanley, Robin P Corbett, Ruth Spearing, Vladimir Stevanovic, Ma Yi, Michael J Sullivan
PURPOSE: This study was undertaken to determine cancer survival and describe the unique spectrum of cancers diagnosed among New Zealand's adolescents and young adult (AYA) population. METHODS: Registrations for 1606 15-24 year olds diagnosed with a new primary malignant tumor between 2000 and 2009 were obtained from the New Zealand Cancer Registry and classified according to AYA diagnostic group and subgroup, age, sex, and prioritized ethnicity. Age-standardized incidence rates (IRs) per million person years and 5-year relative survival ratios were calculated...
February 16, 2017: Journal of Adolescent and Young Adult Oncology
https://www.readbyqxmd.com/read/28201973/flavonoids-active-against-osteosarcoma-a-review-of-the-molecular-mechanisms-involved
#16
Hui Liu, Yutong Gao, Yonghui Dong, Peng Cheng, Anmin Chen, Hui Huang
Osteosarcoma is the most frequent primitive malignant bone tumor affecting adolescents and young adults worldwide. The tumor exhibits aggressive growth in the primary site and readily metastasizes to other organs. There has been no significant improvement in the 5-year survival rate since the 1970s and the figure remains at 60-70%. In addition, the side effects of chemotherapeutic drugs and resistance to chemotherapy compromise the effects of treatment for osteosarcoma. In recent years, the development of flavonoids drugs inhibiting carcinogenesis is attracting great interest in the scientific community...
February 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28195259/telangiectatic-osteosarcoma-of-the-rib-a-rare-entity-and-a-potential-diagnostic-pitfall
#17
I Saguem, L Ayadi, R Kallel, S Charfi, I Bahri, N Gouiaa, T Sellami-Boudawara
Osteosarcoma (OS) is a common primary malignant tumor of bones that produces osteoid matrix. Telangiectatic osteosarcoma (TOS) is a rare variant of OS. It affects the long bones especially the lower end of femur and the upper ends of tibia and humerus, a distribution similar to the conventional osteosarcoma. The rib involvement is very infrequent. We present a case of TOS of the rib that posed a diagnostic difficulty owing to its unusual location and to its resemblance to giant cell tumor and aneurysmal bone cyst...
December 2016: Pathologica
https://www.readbyqxmd.com/read/28191765/generation-of-osteosarcomas-from-a-combination-of-rb-silencing-and-c-myc-overexpression-in-human-mesenchymal-stem-cells
#18
Jir-You Wang, Po-Kuei Wu, Paul Chih-Hsueh Chen, Chia-Wen Lee, Wei-Ming Chen, Shih-Chieh Hung
Osteosarcoma (OS) was a malignant tumor occurring with unknown etiology that made prevention and early diagnosis difficult. Mesenchymal stem cells (MSCs), which were found in bone marrow, were claimed to be a possible origin of OS but with little direct evidence. We aimed to characterize OS cells transformed from human MSCs (hMSCs) and identify their association with human primary OS cells and patient survival. Genetic modification with p53 or retinoblastoma (Rb) knockdown and c-Myc or Ras overexpression was applied for hMSC transformation...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28188923/arsenic-sulfide-induces-apoptosis-and-autophagy-through-the-activation-of-ros-jnk-and-suppression-of-akt-mtor-signaling-pathways-in-osteosarcoma
#19
Gangyang Wang, Tao Zhang, Wei Sun, Hongsheng Wang, Fei Yin, Zhuoying Wang, Dongqing Zuo, Mengxiong Sun, Zifei Zhou, Binhui Lin, Jing Xu, Yingqi Hua, Haoqing Li, Zhengdong Cai
Osteosarcoma is a common primary malignant bone tumor, the cure rate of which has stagnated over the past 25-30 years. Arsenic sulfide (As2S2), the main active ingredient of the traditional Chinese medicine realgar, has been proved to have antitumor efficacy in several tumor types including acute promyelocytic leukemia, gastric cancer and colon cancer. Here, we investigated the efficacy and mechanism of As2S2 in osteosarcoma both in vitro and in vivo. In this study, we demonstrated that As2S2 potently suppressed cell proliferation by inducing G2/M phase arrest in various osteosarcoma cell lines...
February 7, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28183215/costal-chondrosarcoma-requiring-differential-diagnosis-from-metastatic-tumor
#20
Katsunari Matsuoka, Mitsuhiro Ueda, Yoshihiro Miyamoto
Although chondrosarcoma is a common malignant bone tumor, cases arising in the rib are relatively rare. We experienced a case of chondrosarcoma arising in the right 10th rib during follow-up after lung cancer surgery. Although the finding of an osteolytic mass suggested a metastatic bone tumor, 18F-fluorodeoxyglucose positron-emission tomography demonstrated low fluorodeoxyglucose uptake, and a primary bone tumor was suspected. The bone tumor was resected and diagnosed as chondrosarcoma. Four years after resection, there has been no recurrence or metastasis...
February 2017: Asian Cardiovascular & Thoracic Annals
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