Results: 256

Fibroblastic osteosarcoma in a white-eared opossum (Didelphis albiventris)

Pesqui. vet. bras; 40 (7), 2020
Osteosarcoma is characterized by the production of osteoid or woven bone, using neoplastic osteoblasts. It is the most common primary bone neoplasm in canines and humans. This neoplasm was previously reported in all vertebrate classes, including a wide variety of mammals. However, there is no case report...

Utilidad diagnóstica de la biopsia de médula ósea en pediatría

La biopsia de médula ósea (BMO) es un procedimiento invasivo que ha ganado campo en la práctica médica ya que se realiza para el diagnóstico, estadificación y seguimiento de enfermedades hematológicas y no hematológicas, benignas o neoplásicas, entre otros. El objetivo fue establecer el rol de l...

COL6A3 promotes cellular malignancy of osteosarcoma by activating the PI3K/AKT pathway

SUMMARY OBJECTIVE In this study, we aimed to investigate the role of COL6A3 on cell motility and the PI3K/AKT signaling pathway in osteosarcoma. METHODS The relative expression of COL6A3 was achieved from a GEO dataset in osteosarcoma tissue. siRNA technology was applied to decrease the COL6A3 expres...

Intraosseous Schwannoma: Case Report and Review of the Literature

Abstract Schwannoma is a benign neural sheath tumor of the soft tissue, and its intraosseous presentation is very rare. It is estimated that intraosseous schwannomas represent 0.2% of all bone tumors. The tumor may affect any site of the skeleton, including the mandible, the sacrum, vertebral bodies, the...

Bone scan positivity in non-metastatic, castrate-resistant prostate cancer: external validation study

Int. braz. j. urol; 46 (1), 2020
ABSTRACT Introduction: Tables predicting the probability of a positive bone scan in men with non-metastatic, castrate-resistant prostate cancer have recently been reported. We performed an external validation study of these bone scan positivity tables. Materials and Methods: We performed a retrospectiv...

Sarcoma de Ewing óseo: Enfoque multidisciplinario y resultados oncológicos en 88 pacientes
Ewing sarcoma of the bone. Multidisciplinary approach and oncological results in 88 patients

Medicina (B.Aires); 80 (1), 2020
El sarcoma de Ewing óseo es un tumor poco frecuente, agresivo, que afecta principalmente a niños y adultos jóvenes. Existe ausencia de registros en nuestro país respecto de la prevalencia de esta enfermedad, los esquemas de tratamiento utilizados y sus resultados. El objetivo fue analizar, en un grup...

Resection of Bone Tumor Guided by Gamma Probe and Evaluation of Postoperative Pain

Abstract Osteoid osteoma is a benign neoplasm commonly found in young men, but that can be found in every age, which affects mainly long bones, clinically characterized by continuous and limiting pain that is relieved by salicylates. It is a small lesion composed of immature osteoid tissue, central hyper...

Manual and semiautomatic segmentation of bone sarcomas on MRI have high similarity

Braz. j. med. biol. res; 53 (2), 2020
The aims of this study were to evaluate the intra- and interobserver reproducibility of manual segmentation of bone sarcomas in magnetic resonance imaging (MRI) studies and to compare manual and semiautomatic segmentation methods. This retrospective study included twelve osteosarcoma and eight Ewing sarc...

Diagnóstico diferencial entre tumores oseos y osteomielitis en niños. A propósito de un caso

Rev. pediatr. electrón; 17 (2), 2020
La osteomielitis aguda y el tumor de Ewing, dos entidades óseas tan diferentes, una de naturaleza infecciosa como la osteomielitis, y otra de naturaleza neoplásica como el tumor de Ewing, pueden coincidir en sus características clínico-radiográficas y ser motivo, por ello, de confusión. No son infr...