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Chondroblastoma

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https://www.readbyqxmd.com/read/27798068/massive-chondroblastoma-of-the-talus-treatment-with-en-bloc-talectomy-and-tibiocalcaneal-arthrodesis-long-term-follow-up-of-a-case
#1
Luis Bahamonde Munoz, Mario Escudero Heldt
: Chondroblastomas are benign bone tumors that are usually located at epiphyseal regions of long bones, and are rarely located at the talus. The usual treatment consists of curettage and filling of the bone defect with bone either bone grafts or some other material, such as cement. The authors present a case of a massive chondroblastma of the talus, extending outside of bone boundaries and with a huge soft tissue mass and invasion of the adjacent calcaneus. Management included an en bloc talectomy through a double medial and lateral approach, and curettage and filling with cement of the calcaneal extension...
October 25, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27646893/-significance-of-satb2-in-the-pathologic-diagnosis-of-osteosarcoma
#2
M Li, Y P Cai, K Y Lu, Y Chen, X Zhu, Y Yin, J Tang
Objective: To investigate the role of SATB2 in the pathological diagnosis and differential diagnosis of osteosarcoma. Methods: Immunostaining of SATB2 was performed in 47 cases of osteosarcomas, 5 osteoblastomas, 4 fibrous dysplasias, 5 myositis ossificans, 10 chondroblastomas, 8 chondrosarcomas, 5 Ewing sarcomas, 5 undifferentiated pleomorphic sarcomas, 6 fibrosarcomas and 2 leiomyosarcomas. Results: All osteoblastomas (5/5) and myositis ossificans (5/5), 83.0%(39/47) of osteosarcomas and 2/10 of chondroblastomas showed nuclear immunoreactivity for SATB2...
September 8, 2016: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/27526293/histologic-spectrum-of-giant-cell-tumor-gct-of-bone-in-patients-18-years-of-age-and-below-a-study-of-63-patients
#3
Alyaa Al-Ibraheemi, Carrie Y Inwards, Riyam T Zreik, Doris E Wenger, Sarah M Jenkins, Jodi M Carter, Jennifer M Boland, Peter S Rose, Long Jin, Andre M Oliveira, Karen J Fritchie
Although the majority of giant cell tumors (GCTs) of the bone occur in adult patients, occasionally they arise in the pediatric population. In this setting they may be mistaken for tumors more commonly seen in this age group, including osteosarcoma, aneurysmal bone cyst, and chondroblastoma. All cases of primary GCT of the bone arising in patients 18 years and below were retrieved from our institutional archives and examined with emphasis on the evaluation of various morphologic patterns. Clinical/radiologic records were reviewed when available...
August 11, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27523972/molecular-pathogenesis-and-diagnostic-prognostic-and-predictive-molecular-markers-in-sarcoma
#4
REVIEW
Adrián Mariño-Enríquez, Judith V M G Bovée
Sarcomas are infrequent mesenchymal neoplasms characterized by notable morphological and molecular heterogeneity. Molecular studies in sarcoma provide refinements to morphologic classification, and contribute diagnostic information (frequently), prognostic stratification (rarely) and predict therapeutic response (occasionally). Herein, we summarize the major molecular mechanisms underlying sarcoma pathogenesis and present clinically useful diagnostic, prognostic and predictive molecular markers for sarcoma...
September 2016: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/27504302/aneurysmal-bone-cyst-an-uncommon-secondary-event-in-calcaneal-chondroblastoma
#5
Sandip Barman, Preeti Diwaker, Divya Bansal, Neelam Wadhwa, Gurvinder Singh
Chondroblastoma is an uncommon benign bone tumour, involvement of epiphysis of long bones is typical. Chondroblastoma of the calcaneum is uncommon and its association with secondary aneurysmal bone cyst is even rarer. Only two cases of calcaneal chondroblastoma associated with secondary aneurysmal bone cyst have been reported till date. A 22-year-old male presented to the department of orthopaedics with complains of pain and swelling in the left heel since the last 10 months. On clinico-radiological grounds differentials considered were giant cell tumour of bone and aneurysmal bone cyst...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27474439/molecular-basis-for-oncohistone-h3-recognition-by-setd2-methyltransferase
#6
Shuang Yang, Xiangdong Zheng, Chao Lu, Guo-Min Li, C David Allis, Haitao Li
High-frequency point mutations of genes encoding histones have been identified recently as novel drivers in a number of tumors. Specifically, the H3K36M/I mutations were shown to be oncogenic in chondroblastomas and undifferentiated sarcomas by inhibiting H3K36 methyltransferases, including SETD2. Here we report the crystal structures of the SETD2 catalytic domain bound to H3K36M or H3K36I peptides with SAH (S-adenosylhomocysteine). In the complex structure, the catalytic domain adopts an open conformation, with the K36M/I peptide snuggly positioned in a newly formed substrate channel...
July 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/27473669/p63-expression-as-a-biomarker-discriminating-giant-cell-tumor-of-bone-from-other-giant-cell-rich-bone-lesions
#7
Tina Shooshtarizadeh, Mandana Rahimi, Sajjadeh Movahedinia
INTRODUCTION: Giant cell tumor of bone (GCTOB) is a locally aggressive neoplasm that accounts for 5% of all primary bone tumors. This tumor overlaps in histopathologic and radiographic presentations with different malignant, benign, and metabolic giant cell-rich lesions. The purpose of this study is to evaluate p63 expression status in giant cell tumor of bone in comparison with other giant cell-rich lesions. MATERIALS AND METHODS: In a cross-sectional study we examined immunohistochemical expression of p63 in a series of 100 giant cell-rich bone lesions, including 31 giant cell tumors of bone, 14 osteosarcomas (including 3 giant cell-rich variants), 18 aneurysmal bone cysts (including one solid variant), 8 non-ossifying fibromas, 17 chondroblastomas, 8 tenosynovial giant cell tumors, and 4 brown tumors...
July 14, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27458555/trochanter-calcar-preserving-reconstruction-in-tumors-involving-the-femoral-head-and-neck
#8
Hwan Seong Cho, Young-Kyun Lee, Yong-Chan Ha, Kyung-Hoi Koo
AIM: To evaluate the results of hip reconstruction with extensive excision for tumor confined to the femoral head and neck. METHODS: We designed a resection preserving the greater trochanter and lower portion of calcar femorale, and utilized conventional total hip prosthesis. We retrospectively reviewed 7 patients, who underwent a wide resection and reconstruction using conventional hip prosthesis. There were 3 men and 4 women and their mean age was 42.5 years (22 to 65 years)...
July 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/27443518/characterization-of-fn1-fgfr1-and-novel-fn1-fgf1-fusion-genes-in-a-large-series-of-phosphaturic-mesenchymal-tumors
#9
Jen-Chieh Lee, Sheng-Yao Su, Chun A Changou, Rong-Sen Yang, Keh-Sung Tsai, Michael T Collins, Eric S Orwoll, Chung-Yen Lin, Shu-Hwa Chen, Shyang-Rong Shih, Cheng-Han Lee, Yoshinao Oda, Steven D Billings, Chien-Feng Li, G Petur Nielsen, Eiichi Konishi, Fredrik Petersson, Thomas O Carpenter, Kesavan Sittampalam, Hsuan-Ying Huang, Andrew L Folpe
Phosphaturic mesenchymal tumors typically cause paraneoplastic osteomalacia, chiefly as a result of FGF23 secretion. In a prior study, we identified FN1-FGFR1 fusion in 9 of 15 phosphaturic mesenchymal tumors. In this study, a total of 66 phosphaturic mesenchymal tumors and 7 tumors resembling phosphaturic mesenchymal tumor but without known phosphaturia were studied. A novel FN1-FGF1 fusion gene was identified in two cases without FN1-FGFR1 fusion by RNA sequencing and cross-validated with direct sequencing and western blot...
July 22, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27339705/epigenetics-histone-mutations-reprogramme-chondroblastoma
#10
Sarah Seton-Rogers
No abstract text is available yet for this article.
July 2016: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/27299121/chondroblastoma-of-the-medial-malleolus-a-case-report-of-a-rare-tumor-at-an-extremely-uncommon-site
#11
Mukesh Tiwari, Hemant Chaturvedi, Vaibhav Patel, Rajarshi Matti
INTRODUCTION: Tumors of the medial malleolus are rare. Chondrogenic tumors of the medial malleolus are extremely rare. Chondroblastoma of the medial malleolus has not been reported previously in the English literature. The purpose is to present a rare tumor occurring at an unusual site and its successful management. CASE PRESENTATION: We report a case of a 30 years old female with chondroblastoma of the medial malleolus with its clinical features, radiographic features, differential diagnosis, and management at an unusual site...
January 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/27233920/-cartilage-tumors-pathology-and-radiomorphology
#12
M Uhl, G Herget, P Kurz
Primary cartilage-forming tumors of the bone are frequent entities in the daily work of skeletal radiologists. This article describes the correlation of pathology and radiology in cartilage-forming skeletal tumors, in particular, enchondroma, osteochondroma, periosteal chondromas, chondroblastoma and various forms of chondrosarcoma. After reading, the radiologist should be able to deduce the different patterns of cartilage tumors on radiographs, CT, and MRI from the pathological aspects. Differentiation of enchondroma and chondrosarcoma is a frequent diagnostic challenge...
June 2016: Der Radiologe
https://www.readbyqxmd.com/read/27229140/the-histone-h3-3k36m-mutation-reprograms-the-epigenome-of-chondroblastomas
#13
Dong Fang, Haiyun Gan, Jeong-Heon Lee, Jing Han, Zhiquan Wang, Scott M Riester, Long Jin, Jianji Chen, Hui Zhou, Jinglong Wang, Honglian Zhang, Na Yang, Elizabeth W Bradley, Thai H Ho, Brian P Rubin, Julia A Bridge, Stephen N Thibodeau, Tamas Ordog, Yue Chen, Andre J van Wijnen, Andre M Oliveira, Rui-Ming Xu, Jennifer J Westendorf, Zhiguo Zhang
More than 90% of chondroblastomas contain a heterozygous mutation replacing lysine-36 with methionine-36 (K36M) in the histone H3 variant H3.3. Here we show that H3K36 methylation is reduced globally in human chondroblastomas and in chondrocytes harboring the same genetic mutation, due to inhibition of at least two H3K36 methyltransferases, MMSET and SETD2, by the H3.3K36M mutant proteins. Genes with altered expression as well as H3K36 di- and trimethylation in H3.3K36M cells are enriched in cancer pathways...
June 10, 2016: Science
https://www.readbyqxmd.com/read/27176605/reconstruction-with-double-pedicel-fibular-graft-and-ankle-arthrodesis-for-aggressive-chondroblastoma-in-the-distal-tibia
#14
Jian Fan, Shan-zhu Li, Jiong Mei, Guang-rong Yu
BACKGROUND: Aggressive chondroblastoma of the distal tibia is rare, and below-knee amputation had been the standard surgical procedure. CASE PRESENTATION: We reported an additional case and reviewed the existing literature. A 20-year-old man with a 2-month history of right ankle pain and swelling underwent distal tibia wide resection, double pedicle fibular, autogenous iliac bone graft, and ankle arthrodesis. He had no pain, no limitation in daily activities, and no evidence of local recurrence and infection; the Musculoskeletal Tumour Society Score (MSTS) is 86% at the final follow-up...
2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27158424/preoperative-embolization-of-primary-bone-tumors-a-case-control-study
#15
Roushan Jha, Raju Sharma, Shishir Rastogi, Shah Alam Khan, Arvind Jayaswal, Shivanand Gamanagatti
AIM: To study the safety and effectiveness of preoperative embolization of primary bone tumors in relation to intraoperative blood loss, intraoperative blood transfusion volume and surgical time. METHODS: Thirty-three patients underwent preoperative embolization of primary tumors of extremities, hip or vertebrae before resection and stabilization. The primary osseous tumors included giant cell tumors, aneurysmal bone cyst, osteoblastoma, chondroblastoma and chondrosarcoma...
April 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/27127749/malignant-chondroblastoma-of-extraskeletal-origin
#16
Ramu Duttaluri, Guru Prasad Sultanpurkar, Harshvardhan Raorane, Harsha Vikram
Chondroblastoma is a rare benign neoplasm of cartilaginous origin. It typically arises in the epiphysis of a long bone. They occur mostly in the second decade of life and is more common in males. Extraskeletal origin of chondroblastoma is a rarity and virulent behavior by its local aggressive nature or metastasis is reported in very few cases. We hereby, present a case of chondroblastoma in the left popliteal fossa first of its kind in a 62-year-old female, primary tumor extraskeletal in origin which turned locally aggressive and eventually metastasized to lungs...
April 2016: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/27067846/-genetic-aberration-and-pathological-diagnosis-in-bone-and-soft-tissue-tumors
#17
Kunio Iura, Yoshinao Oda
Bone and soft-tissue sarcomas comprise a rare, complex, and heterogeneous group of tumors for which it is difficult for even experienced pathologists to provide a conclusive diagnosis. The number of diagnoses made using genetic analysis has increased since the detection of fusion genes in several soft-tissue tumors in the 1990s. Moreover, other specific genetic aberrations have been reported in various bone and soft-tissue tumors. In addition, molecular therapeutic targets have been sought in advanced cases of soft-tissue and bone tumors similar to other organ malignancies...
March 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/27067177/complete-local-tumor-control-after-curettage-of-chondroblastoma-a-retrospective-analysis
#18
T M Tiefenboeck, V Stockhammer, J Panotopoulos, S Lang, I Sulzbacher, R Windhager, P T Funovics
BACKGROUND: Chondroblastoma is an uncommon benign bone tumor with an incidence of 1 to 2% among all primary bone tumors. In the past, treatment for chondroblastoma has been highly variable leading to different rates of recurrences. Therefore we aimed to determine: (1) the rate of recurrence, (2) the complication rate, (3) and functional outcome after intralesional curettage of chondroblastoma. HYPOTHESES: Intralesional curettage with high speed burring and packing can avoid local recurrences...
June 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27047232/reconstruction-with-non-vascularized-fibular-autograft-after-resection-of-clavicular-benign-tumor
#19
Mario Cahueque, Daniel Macias, Guillermo Moreno
Chondroblastoma is a rare, benign cartilaginous neoplasm that accounts for approximately 1% of all bone tumors, and approximately 4% of all chondroblastomas arise in the clavicle. Here, we report a case of chondroblastoma in the right clavicle. 27-year-old female patient presented with a 12-month history of shoulder pain. Based on radiological and pathological examination, the diagnosis was compatible with chondroblastoma. After resection of the tumor, 1 cm of the distal clavicle was preserved, 15 cm of the non-vascularized fibula was taken from the contralateral leg and placed on the site of the clavicle and fixed with hook plate at distal clavicle and reconstruction plate attached to the sternum...
December 2015: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27011442/fine-needle-aspiration-cytology-of-chondroblastoma-a-report-of-two-cases-with-brief-review-of-pitfalls
#20
Amita Krishnappa, S N Shobha, S Vijay Shankar, Sushma Aradhya
Chondroblastoma is a rare, giant cell-rich, benign neoplasm of bone. Since the past few decades fine needle aspiration cytology (FNAC) has gained momentum in preoperative diagnosis of bone lesions. At cytology, other giant cell-rich tumors and tumorlike lesions such as aneurysmal bone cyst (ABC), giant cell tumor, and chondromyxoid fibroma fall under the differential diagnosis of chondroblastoma. Due to the difference in the treatment protocol and prognosis, preoperative diagnosis is mandatory. We describe the cytomorphology in two cases of chondroblastoma diagnosed at FNAC and confirmed by histopathology...
January 2016: Journal of Cytology
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