Active clinical trials for "Bone Neoplasms"

This prospective observational study is going to figure out the safety and efficacy of denosumab as an post-operative strategy.All the patients enrolled will take denosumab according to the protocols.We focus on the recurrence rate after the drug withdrawl and possibility of malignant transformation.

Bone radioiodine (RAI) uptake without structural abnormality in thyroid cancer (TC) patients may be related to false positive or to microscopic foci of metastatic tissue. In such cases, outcome is reported to be excellent. Indeed, Robenshtok et al. reported a serie of patients with RAI-avid bone metastases of TC without structural abnormality on imaging studies who have more favorable long-term prognosis than those harbouring structurally visible bone metastases and do not undergo skeletal-related complications. The investigators report the case of Mrs D., who had been operated for a pathologic tumor stage 3: pT3(m) poorly differentiated TC at the age of 43. The first post-therapeutic whole body scan revealed 3 foci of bone uptake (right clavicle, L2, L3). The elevated level of thyroglobulin (157ng/mL) favoured the hypothesis of bone metastases despite the absence of any structural lesion on CT and MRI. She received 7 courses of radioiodine therapy. The right clavicle RAI uptake persisted, and subsequent CT disclosed an osteolytic lesion which was treated by radiofrequency and external beam radiation. Twenty-five years after the diagnosis, she has a persistent morphological disease with a 30x8mm progressive lesion on the right clavicle, for which surgery is planned. The aim of the present study is to describe the natural history and evolution of radioiodine avid bone metastases from thyroid cancer without structural abnormalities and to identify prognosis factors.

This is a retrospective/prospective observational multicentric trial on patients with bone metastases from NENs. General objectives: To trace on a national scale the frequency of bone metastases in patients with neuroendocrine neoplasm (NEN) and their clinical management. To correlate clinical and biological factors to clinical outcomes. To centralise and to make homogeneous clinical, pathological, instrumental and therapeutic information. To set up a database and to acquire biological material for studying predictive and prognostic biomarkers.

Bone metastasis (i.e. cancer cell spreading to bone) is the major clinical problem of advanced breast cancer patients. Bone metastasis is not curable nor preventable. Currently available therapeutic approaches are only palliative. The major hurdle for improving bone metastasis treatment is lack of sensitive diagnostic tools. Diagnosis of bone metastasis is heavily dependent on radiographic imaging of bone destruction that are detectable only when the lesion is significantly large. Accordingly, if bone metastasis can be detected at an earlier time point when bone destruction is minimal or incipient, treatments can be given earlier and the patients can expect better outcomes. We and others previously have found that a subset of bone-forming cells (i.e. circulating osteocalcin-positive cells) exists in the blood stream of the patients with bone diseases (e.g. bone metastasis and inflammation) or active bone formation (e.g. adolescence) in mouse models anf human samples. Extended from this laboratory observation, this clinical study proposes to test the hypothesis that circulating osteocalcin-positive cells are the early biomarker of breast cancer bone metastasis. For this aim, this study will measure circulating osteocalcin-positive cells in the blood samples of breast cancer patient, and examine whether the measure sensitively detects bone metastasis.

The purpose of this study is to monitor fracture risk associated with bone tumors in cancer patients. Previous studies from our lab have suggested that it is possible to compute the mechanical strength of bones with tumors using computed tomography (CT) scans, which are like three-dimensional X-ray pictures of the affected bones. The next step in determining the usefulness of this type of strength analysis is to see if we can accurately predict who is at risk for bone fracture and which patients are at high risk of fractures. This non-invasive analysis may help physicians determine the best treatment to reduce the risk of an impending bone fracture in the future.

The study show the clinical results of limb salvage for primary malignant bone tumor of the distal tibia using block excision of the tumor and reconstruction with allograft arthrodesis with different methods of fixation (plates or intramedullary nail system)