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Primary malignant bone tumors

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https://www.readbyqxmd.com/read/28635396/microrna-34a-inhibits-tumor-invasion-and-metastasis-in-osteosarcoma-partly-by-effecting-c-iap2-and-bcl-2
#1
Jie Wen, Yan-Kun Zhao, Yan Liu, Jin-Feng Zhao
Osteosarcoma is a common primary malignant bone tumor that occurs mainly in children and adolescents. Recent evidence has demonstrated that miR-34a is involved in the invasion and metastasis of osteosarcoma. This study aims to explore the effect of biological behavior of miR-34a on osteosarcoma. First, we collect osteosarcoma and adjacent specimens, and the relative expression of miR-34a and C-IAP2 messenger RNA was quantitated by real-time polymerase chain reaction. Furthermore, miR-34a stimulant is synthesized and transfected onto osteosarcoma MG-63 cells...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28630843/osteosarcoma-of-jaw-with-varying-histomorphologic-patterns-case-report
#2
Ruchika Ravi Agrawal, Jyoti Dilip Bhavthankar, Mandakini Subhash Mandale, Purva Prakash Patil
INTRODUCTION: Osteosarcoma is a malignant mesenchymal tumor whose cancerous cells produce osteoid matrix. It is a common primary malignant bone tumor, representing 23% of total head and neck malignancies. Osteosarcomas of the jaws are rare lesions, representing only 4-7% of all osteosarcomas. This presentation discusses the clinical, radiographical, and histopathological features of a case of osteosarcoma of the mandible with unusual histopathological appearance. CASE REPORT: A 21-year-old male patient reported with a diffuse swelling of the right side of mandible with dull ache and increasing difficulties with eating and speech...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28627658/shikonin-promotes-adriamycin%C3%A2-induced-apoptosis-by-upregulating-caspase%C3%A2-3-and-caspase%C3%A2-8-in-osteosarcoma
#3
Qing Yang, Suoyuan Li, Zeze Fu, Binhui Lin, Zifei Zhou, Zhuoying Wang, Yingqi Hua, Zhengdong Cai
Osteosarcoma is the most common primary malignant bone tumor. Cancer cells employ a host of mechanisms to develop resistance to adriamycin (ADM) or other chemotherapeutic drugs. Shikonin (SK), an active constituent extracted from a Chinese medicinal herb, has been shown to cooperate with ADM in the treatment of osteosarcoma and certain other types of cancer by contributing to the response rate of chemotherapy and the side effects. The aim of the present study was to investigate the role and underlying mechanism of SK in chemotherapy for osteosarcoma...
June 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28624813/down-regulation-of-human-positive-coactivator-4-suppress-tumorigenesis-and-lung-metastasis-of-osteosarcoma
#4
Xu Hu, Chao Zhang, Ying Zhang, Christopher S Hong, Wugui Chen, Weiwei Shen, Hongkai Wang, Jianrong He, Pei Chen, Yue Zhou, Chunmeng Shi, Tongwei Chu
Osteosarcoma is a kind of primary malignant bone tumor with the highest incidence and an extraordinarily poor prognosis and early pulmonary metastasis formation as a frequent occurrence. Transcriptional positive coactivator 4 (PC4) has multiple functions in DNA replication, transcription, repair and chromatin organization, even in tumorigenesis. However, the precise function of PC4 in osteosarcoma is still unclear and controversial. In this paper we found PC4 was upregulated in patient-derived osteosarcoma tissues compared to normal...
May 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28624375/non-hodgkin-s-lymphoma-and-atypical-neck-pain-a-case-report
#5
Natividad Rojas, Carlos Fernandes, Montse Conde, Nuria Montala, Xavier Fornos, Lluís Rosselló, Francésc Pallisó
Neck pain is a common reason for seeking medical attention. It affects at least 15% of the labor force and up to 40% of individuals whose occupation is hazardous. On the other hand, primary bone lymphoma is a very rare disease (less than 1% of all malignant bone tumors), and the relationship between the 2 has rarely been mentioned. We report the case of a patient who had a 1-month history of neck pain. The main symptom was pain on palpation of C2-C6 cervical spinous processes and contracture of the trapezius muscle that did not cease with conventional treatment...
June 14, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28609459/het0016-decreases-lung-metastasis-from-breast-cancer-in-immune-competent-mouse-model
#6
Thaiz F Borin, Adarsh Shankar, Kartik Angara, Mohammad H Rashid, Meenu Jain, Asm Iskander, Roxan Ara, Iryna Lebedyeva, Hasan Korkaya, Bhagelu R Achyut, Ali S Arbab
Distant metastasis is the primary cause of death in the majority of the cancer types. Recently, much importance has been given to tumor microenvironment (TME) in the development of invasive malignant tumors, as well as the metastasis potential. The ability of tumor cells to modulate TME and to escape immune-mediated attack by releasing immunosuppressive cytokines has become a hallmark of breast cancer. Our study shows the effect of IV formulation of HET0016 (HPßCD-HET0016) a selective inhibitor of 20-HETE synthesis, administered intravenously in immune-competent in vivo mouse model of murine breast cancer...
2017: PloS One
https://www.readbyqxmd.com/read/28607872/vascularized-fibula-based-physis-transfer-a-follow-up-study-of-longitudinal-bone-growth-and-complications
#7
Ronnie L Shammas, Yash J Avashia, Alfredo E Farjat, Anthony A Catanzano, L Scott Levin, William C Eward, Brian E Brigman, Detlev Erdmann
BACKGROUND: The vascularized free fibula epiphyseal transfer provides an option for the preservation of limb lengthening after resection of the proximal humerus in pediatric sarcoma patients. The purpose of this study was to provide a long-term follow-up of longitudinal growth patterns and outcomes after free fibula epiphyseal transfer in upper extremity reconstruction. METHODS: A retrospective review of 4 patients who underwent free fibula epiphyseal transfer after oncologic resection of the proximal humerus for osteosarcoma was performed...
May 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28604667/single-agent-gvhd-prophylaxis-with-tacrolimus-after-post-transplant-high-dose-cyclophosphamide-is-a-valid-option-for-haploidentical-transplantation-in-adults-with-hematological-malignancies
#8
A Esquirol, M J Pascual, M Ortiz, J L Piñana, C Ferra, I Garcia Cadenas, I Vilades, S Brunet, R Martino, J Sierra
Eighty-one patients with high-risk hematological malignancies received unmanipulated haploidentical stem cell transplants (haploSCT) using the same protocol at four Spanish institutions. The conditioning regimen was thiotepa, busulfan and fludarabine; following bone marrow or peripheral blood infusion. GvHD prophylaxis with high-dose cyclophosphamide on days +3 and +4, and IV tacrolimus from day +5 was administered. 62% were in complete remission, 17% had received previous allogeneic SCT and 44% had a high-very high refined disease risk index...
June 12, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28603828/profile-of-bone-malignancy-among-rheumatology-inpatients-in-lom%C3%A3-togo
#9
Kodjo Kakpovi, Owonayo Oniankitan, Messanvi Kpoti, Prénam Houzou, Viwalé Es Koffi-Tessio, Komi C Tagbor, Eyram Fianyo, Moustafa Mijiyawa
BACKGROUND: The incidence of bone malignancy in adulthood seems poorly known in Black Africa. AIM: To determine the epidemiological, clinical, and paraclinical profile of bone malignancy in patients admitted to the Rheumatology Department in Lomé (Togo). METHODS: A retrospective study was conducted over 19 years on records of hospital patients admitted for bone malignancy. RESULTS: One hundred sixty-six of 2018 (8.2%) patients (98 men and 68 women) admitted suffered from bone malignancy...
August 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28600647/hybrid-18-f-fdg-pet-mri-might-improve-locoregional-staging-of-breast-cancer-patients-prior-to-neoadjuvant-chemotherapy
#10
Briete Goorts, Stefan Vöö, Thiemo J A van Nijnatten, Loes F S Kooreman, Maaike de Boer, Kristien B M I Keymeulen, Romy Aarnoutse, Joachim E Wildberger, Felix M Mottaghy, Marc B I Lobbes, Marjolein L Smidt
PURPOSE: Our purpose in this study was to assess the added clinical value of hybrid (18)F-FDG-PET/MRI compared to conventional imaging for locoregional staging in breast cancer patients undergoing neoadjuvant chemotherapy (NAC). METHODS: In this prospective study, primary invasive cT2-4 N0 or cT1-4 N+ breast cancer patients undergoing NAC were included. A PET/MRI breast protocol was performed before treatment. MR images were evaluated by a breast radiologist, blinded for PET images...
June 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28600541/induction-of-sirtuin-1-signaling-by-resveratrol-induces-human-chondrosarcoma-cell-apoptosis-and-exhibits-antitumor-activity
#11
Sung-Chuan Chao, Ying-Ju Chen, Kuo-How Huang, Kuan-Lin Kuo, Ting-Hua Yang, Kuo-Yuan Huang, Ching-Chia Wang, Chih-Hsin Tang, Rong-Sen Yang, Shing-Hwa Liu
Chondrosarcoma is a malignant primary bone tumor. Sirtuin-1 (SIRT1), which is a member of sirtuin family, plays a dual role either in cancer promotion or suppression. There is no report about the role of SIRT1 in the human chondrosarcoma cells. Resveratrol is a potent activator of SIRT1. However, its effects on chondrosarcoma have not been extensively studied. Here, we investigated the role of SIRT1 induction by resveratrol in human chondrosarcoma cell growth and tumor progression. Resveratrol significantly decreased cell viability and induced cell apoptosis in human chondrosarcoma cells in a dose-dependent manner...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28597667/-giant-cell-rich-lesions-of-bone-and-their-differential-diagnosis
#12
Iva Zambo, Lukáš Pazourek
Giant cell-rich lesions form a heterogeneous group of reactive and truly neoplastic processes with diverse clinical presentation and biological behavior. Common to all of them are variably numerous multinucleated osteoclast-like giant cells and the presence of mononuclear stroma. Based on the histological picture alone it is sometimes impossible to reliably distinguish certain tumors from each other. The pathologist has to know the patient´s age, the exact localization, tumor growth dynamics and its radiographic characteristics...
2017: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/28593144/schwannoma-of-the-femur-a-rare-case-report
#13
Fahad Al-Lhedan
Schwannoma is a benign tumor derived from Schwann cells that cover myelinated nerve fibers (1). Among primary bone tumors, intraosseous schwannoma accounts for less than 0.2% (2). We are reporting a rare case of an 18-year-old female presented with swelling in the posterior right thigh. The patient was asymptomatic and this was incidentally discovered by her massage therapist. However, the swelling was gradually growing since then. The plain radiograph findings were suggestive of a benign bone tumor. MRI with gadolinium was performed for further evaluation but it demonstrated suspicious features as evidenced by the extra osseous enhancing soft tissue component...
September 2017: Journal of Bone Oncology
https://www.readbyqxmd.com/read/28586053/hdac6-inhibition-suppresses-chondrosarcoma-by-restoring-the-expression-of-primary-cilia
#14
Wei Xiang, Fengjing Guo, Weiting Cheng, Jiaming Zhang, Junming Huang, Rui Wang, Zhongxi Ma, Kai Xu
Chondrosarcoma is a bone tumor characterized by the secretion of a cartilage-like extracellular matrix. It has been proved to lack extracellular sensor primary cilia. This study aimed to illustrate a feasible therapeutic method for chondrosarcoma by regulating primary cilia assembly through inhibiting histone deacetylases 6 (HDAC6) activation. In order to detect the interaction between primary cilia and HDAC6 in human chondrosarcoma, Tubastatin A and small interfering RNA (siRNA) were used to inhibit the endogenous expression of HDAC6...
June 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28586029/fangchinoline-suppresses-the-proliferation-invasion-and-tumorigenesis-of-human-osteosarcoma-cells-through-the-inhibition-of-pi3k-and-downstream-signaling-pathways
#15
Xiucheng Li, Zhifan Yang, Weiqi Han, Xuanyuan Lu, Songtao Jin, Wanlei Yang, Jianlei Li, Wei He, Yu Qian
Osteosarcoma is the most common malignant bone tumor. Most patients diagnosed with osteosarcoma are less than 20 years of age. Osteosarcoma cells proliferate rapidly and invade other tissues. At present, neoadjuvant chemotherapy is the primary pharmacodynamic strategy to prevent the progression of osteosarcoma. However, adverse effects of this strategy limit its long‑term application. Previous research has shown that fangchinoline exerts antitumor effects on several types of tumor cells; however, its effect on osteosarcoma cells remains unknown...
June 6, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28583274/benign-bone-conditions-that-may-be-fdg-avid-and-mimic-malignancy
#16
REVIEW
Thomas C Kwee, John M H de Klerk, Maarten Nix, Ben G F Heggelman, Stefan V Dubois, Hugo J A Adams
Positron emission tomography with the radiotracer (18)F-fluoro-2-deoxy-d-glucose (FDG) plays an important role in the evaluation of bone pathology. However, FDG is not a cancer-specific agent, and knowledge of the differential diagnosis of benign FDG-avid bone alterations that may resemble malignancy is important for correct patient management, including the avoidance of unnecessary additional invasive tests such as bone biopsy. This review summarizes and illustrates the spectrum of benign bone conditions that may be FDG-avid and mimic malignancy, including osteomyelitis, bone lesions due to benign systemic diseases (Brown tumor, Erdheim-Chester disease, Gaucher disease, gout and other types of arthritis, Langerhans cell histiocytosis, and sarcoidosis), benign primary bone lesions (bone cysts, chondroblastoma, chondromyxoid fibroma, desmoplastic fibroma, enchondroma, giant cell tumor and granuloma, hemangioma, nonossifying fibroma, and osteoid osteoma and osteoblastoma), and a group of miscellaneous benign bone conditions (post bone marrow biopsy or harvest status, bone marrow hyperplasia, fibrous dysplasia, fractures, osteonecrosis, Paget disease of bone, particle disease, and Schmorl nodes)...
July 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28577723/postoperative-infections-after-limb-sparing-surgery-for-primary-bone-tumors-of-the-pelvis-incidence-characterization-and-functional-impact
#17
REVIEW
M Severyns, S Briand, D Waast, S Touchais, A Hamel, F Gouin
INTRODUCTION: Surgical site infections (SSI) represent the most common postoperative complication after limb sparing surgery for primary malignant bone tumors, with incidence ranging from 10 to 47%. There is no consensus concerning about the optimal surgical strategy, or the adequate antibiotic prophylaxis in pelvic resections. A greater knowledge of these infections and their surgical trajectories seem essential to obtain. MATERIALS AND METHODS: We retrospectively studied 45 cases of pelvic resection, including at least the periacetabular zone 2 of Enneking, performed between 1989 and 2013 in the same center...
June 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28567182/adenocarcinoma-of-the-appendix-presenting-as-a-palpable-right-thigh-mass
#18
Marci Handler, Neil Anand, Lawrence Wei, Peter Snieckus
Intra-abdominal and intra-pelvic pathologies initially presenting in extra-abdominal/pelvic locations is unusual. This spread predominantly occurs with infectious processes to sites including the buttock, thigh, and calf. The routes of extension into adjacent anatomically weak compartments include the pelvic outlet, greater sciatic foramen, obturator foramen, inguinal or femoral canal, weak bones, or along nerves and blood vessels. Malignant neoplasms of the appendix, while extremely rare and accounting for only 0...
April 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/28561653/bone-sarcoma-pathology-diagnostic-approach-for-optimal-therapy
#19
Andrew E Rosenberg
The pathologic interpretation of malignant bone tumors is one of the more challenging areas in surgical pathology. This is based on the reality that primary bone sarcomas are uncommon, demonstrate significant morphologic heterogeneity, and have a broad spectrum of biology. Accordingly, it is difficult for pathologists to acquire the necessary experience to confidently and accurately diagnose bone sarcomas. The task is further complicated by the fact that it requires the integration of clinical and radiologic information into the diagnostic process...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28559020/establishment-and-characterization-of-a-clear-cell-odontogenic-carcinoma-cell-line-with-ewsr1-atf1-fusion-gene
#20
Satoko Kujiraoka, Takaaki Tsunematsu, Yukiko Sato, Maki Yoshida, Ayataka Ishikawa, Rei Tohyama, Michio Tanaka, Yutaka Kobayashi, Tomoyuki Kondo, Aya Ushio, Kunihiro Otsuka, Mie Kurosawa, Masako Saito, Akiko Yamada, Rieko Arakaki, Hirokazu Nagai, Hiromasa Nikai, Kengo Takeuchi, Toshitaka Nagao, Youji Miyamoto, Naozumi Ishimaru, Yasusei Kudo
OBJECTIVE: Clear cell odontogenic carcinoma (CCOC) is a rare malignant odontogenic tumor (MOT) characterized by sheets and lobules of vacuolated and clear cells. To understand the biology of CCOC, we established a new cell line, CCOC-T, with EWSR1-ATF1 fusion gene from a mandible tumor with distant metastasis and characterized this cell line. MATERIALS AND METHODS: To detect the EWSR1-ATF1 fusion gene, we used three CCOC cases, including the present case, by RT-PCR and FISH analysis...
June 2017: Oral Oncology
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