bone marrow neoplasms

..Furthermore, that screening of 2 x 10(7) MNCs in a BM sample can be completed in <3 h makes the method an attractive alternative to other techniques...

..Parallel to symptomatic treatment we started chemotherapy treatment (ELF and PLF regimen, respectively). In both cases we were able to control the MAHA and cancer progression...

..In conclusion, malignancy and bone marrow involvement should be considered when associated with leukoerythroblastic picture and TTP...

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..Furthermore, it seems to be a more sensitive method for detecting DTC in bone marrow samples when compared with ICC...

..020). Adjuvant treatment regimens are not able to completely eliminate cytokeratin-positive cells from the bone marrow. Prospective studies need to evaluate, whether these cells could become targets for additional adjuvant therapy...

..The use of either larger volumes of PB or performing an enrichment step for circulating tumour in blood cells might improve these results...

..We used magnetic activated cell sorting (MACS), a highly sensitive method, to increase detection rates and correlated the presence of cytokeratin (CK)-expressing cells with clinical parameters...

..We investigated CXCR4 expression in esophageal cancer specimens and its association with survival, lymph node microinvolvement, and bone marrow micrometastasis...

..The purpose of this study was to evaluate the role of dynamic contrast-enhanced magnetic resonance imaging (dMRI) in detecting bone marrow involvement in cancer patients...

..These results indicate that MRD persists despite adjuvant therapy in a majority of patients with primary breast cancer up to 4 years following surgery...

..We assessed the prognostic significance of the presence of micrometastasis in the bone marrow at the time of diagnosis of breast cancer by means of a pooled analysis...

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..Thus, BM micrometastasis is a selective process with a specific molecular signature of the primary tumor...

..This was resolved by in situ hybridisation for Epstein-Barr virus encoded small RNA, which detected occult bone marrow infiltration...

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..Although BM biopsy is a safe procedure, it is often poorly tolerated. This analysis aims to assess the incidence of BM involvement and to identify parameters predicting BM involvement in early-stage DLBCL...

..The goal of the current study was to assess the correlation between bone marrow histology and contrast enhancement in infiltrative diffuse myeloma...

..All patients had a putative stem cell phenotype among the DTC and most individual DTC showed such phenotype. Future molecular characterization of these cells is warranted...

..The present review summarizes the current data on the clinical significance of occult metastatic breast cancer cells in bone marrow...

..Myogenin (Myf4), a specific molecular RMS marker, was also investigated in the same samples. Since neuroblastoma (NB) metastasizes to the BM, the potential application of cytometry in differential diagnosis was explored...

..In the present study we analyzed whether a correlation exists between microscopic tumor cell spread to bone marrow and to lymph nodes and attempted to determine which route is clinically more important...

..The aim of this study was to examine the prognostic relevance of these cells in patients with gastric cancer and to evaluate by multivariate analysis their predictive value compared with conventional risk factors...

..Therefore, the efficiency of anti-HER2 adjuvant therapy could be evaluated, in a clinical trial, by sequential detection of HER2-positive micrometastatic cells within the bone marrow, before and after treatment...

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..Selection of EpCAM-/ CK+ tumor clones showed that further antibodies directed against tumor-associated antigens are warranted to improve the efficacy of monospecific approaches...

..Immunocytochemistry (ICC) remains the gold standard for their detection. While assays based on RT-PCR are available, they have not been used for routine detection of DTC's...

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..Further prospective studies are required to examine this in greater detail, with particular reference to early node-negative breast cancer and the value of adjuvant systemic therapy in patients with bone marrow micrometastasis...

..78 (95% confidence interval, 1.11-6.96) for overall survival (P = 0.029). We therefore conclude that erbB2 overexpression characterizes a clinically relevant subset of breast cancer micrometastases...

..The direct identification of HER2 on ITC-BM is the aim of ongoing research, potentially synergizing the prognostic relevance of ITC-BM and the predictive value of the HER2 status...

..For the early diagnosis of disseminating disease, this assay is more efficient than RT-PCR alone and routine immunocytochemistry...

..However the correlation between bone marrow invasion and uptake of MIBG at metastatic sites remains unclear. This study investigates whether MIBG alone is sufficiently sensitive to make these procedures redundant...

..We conducted a retrospective analysis to evaluate clinical manifestations and prognosis of gastric cancer patients with bone marrow metastases...

..The goal of this study was to investigate whether the degree of expression of CXCR4 on cells from neuroblastoma primary tumors was related to the pattern of metastatic involvement...

..By immunochistochemistry method in the diagnostics of minimal residual disease in patients with breast cancer, more precise staging is achieved. This will change the therapeutic approach to these patients...

..We aim to establish if the detection of bone marrow micrometastases associates with elevated markers of angiogenesis and adverse histopathologic features of esophageal cancer...

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..To determine the impact of micrometastatic bone marrow cells (MMC) on survival in high-risk primary breast cancer (HRPBC) patients treated with high-dose chemotherapy (HDCT) and autologous stem cell transplantation (ASCT)...

..In cases of breast carcinoma, small cell carcinoma of lung, and prostate carcinoma, aspirate evaluation may confirm trephine biopsy results or, more rarely, provide the sole confirmation of the malignancy...

..The clinical relevance of bone marrow micrometastases in non-small cell lung cancer (NSCLC) is undetermined, and the value of such analyses in advanced stage patients has not been assessed previously...

..Although preliminary, these data suggest that a graft-versus-breast cancer effect is detectable on micrometastatic BM disease...

..041). CONCLUSIONS: NB84 remains a useful marker for the diagnosis of neuroblastoma in primary tumour specimens, but not for neuroblastoma that has metastasised to bone marrow...

..High incidences need further investigation with bigger samples to confirm...

..In conclusion our study shows that presence of DTCs in BM at diagnosis was associated with the histological differentiation of the primary tumor and an increased risk of developing distant metastases after RT...

..We therefore examined 'tissue micro arrays' (TMAs) of 265 primary breast carcinomas from patients with known bone marrow (BM) status for HER2, Topoisomerase IIalpha (Top IIa), Ki 67, and p53...

..This report elucidates factors influencing patient accrual...

..By meeting traditional and contemporary demands on the haematopathologist, it offers a powerful alternative to paraffin wax processing for diagnosis and research...

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..These results show that a more complex analysis of bone marrow is needed to diagnose bone marrow infiltration, particularly in samples with minimal residual disease...

..The method described offers an excellent tool for the enrichment of micrometastatic tumour cell clusters; these clusters may represent the initial stage of development from a single disseminated tumour cell towards an overt metastasis...

..Own studies demonstrated a nearly complete TF expression on DTC-BM, indicating its suitability as marker for immunomagnetic enrichment...

..As TF is a specific marker of DTC-BM, it could be used as a target for antibody based therapy and immunomagnetic enrichment techniques for the isolation of DTC-BM...

..Current multicenter trials in neuroblastoma trying to elucidate the relevance of residual cells at different time point during treatment are ongoing and will ultimately result in a consensus about this intruiging prognostic paramater...

..In this study, the authors assessed and improved the current methods for purifying and characterizing rare disseminated carcinoma cells...

..Further work is needed to establish assays that are validated by prospective clinical studies. Early identification of clinically relevant disease could lead to new treatment or staging approaches for breast cancer...

..GA733-2 mRNA is not specific as a marker for the detection of breast cancer cells in BM and PB...

..To use early marrow response as a prognostic marker is particularly relevant for patients not likely to benefit from this therapy...

..Therefore, the ability of neuroblastoma tumors to preferentially form metastases in the bone marrow may be influenced by a set of complex CXCR4-SDF-1 interactions...

..u-PAR may be a promising marker to define a critical subpopulation of disseminated tumor cells and a target to eliminate MRD. Molecular phenotyping of MRD is critical for defining its individual clinical relevance...

..This professional education must then be translated to the bedside throughout the continuum of care...

..The results of this study have been considered in relation to the controversial results in the literature to elucidate the usefulness of cytokeratin 20 (CK20) RT-PCR to detect disseminated tumour cells further...

..The positive cases included 23.6% of the patients with and 9% of those without metastasis. Only 4/60 negative controls analyzed were positive by PCR. Our results show high specificity and a good correlation with disease status...

..The immunocytochemical detection of cytokeratin-positive cells in PB seems to be associated with the site of metastatic manifestation...

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..This review describes the advantages and disadvantages of the main detection techniques and discusses the current state of clinical relevance of disseminated tumor cells in patients with colorectal cancer...

..Against this background it is too early to say whether the detection of disseminated tumour cells in the bone marrow can be used as a prognostic factor with an impact on therapeutic strategies...

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..RT-PCR assay for mammaglobin A may be a useful tool for detection of occult breast cancer cells in the bone marrow. Clinical and prognostic relevance of minimal residual disease should be further investigated...

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..Moreover, early recurrence was observed in the patients with the tumor mRNA detected in bone marrow. Additional studies with larger numbers of patients and longer follow-up are desirable...

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..Further prospective followup studies should be performed to determine the prognostic value of these findings...

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..e., those cells constituting the earliest metastatic population of tumor cells. Thus, techniques that identify occult metastases may be valuable in furthering our understanding of the events regulating tumor dissemination...

..If borne out in vivo, these findings suggest that tumours with PRA predominance may be predisposed to cancer progression and this may signal a poorer prognosis in patients...

..mastocytosis exhibits a distinct pattern of stromal change, and suggest that the fibrogenetic mechanism in systemic mastocytosis is most likely different from that of other bone marrow neoplasms which are also associated with fibrosis.

..These results indicate that this technique can be used as a early diagnostic technique of bone marrow micrometastasis in the patient with the nonsmall cell lung cancer...

..The aim of this study was to evaluate the diagnostic contribution of TCR-gamma gene rearrangement analysed by PCR. METHODS and..

..Given that the cellular origin of plasmacytoid DC is still controversial, myeloid antigen expression involving CD13 may not exclude a diagnosis of BPDCN...

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..In addition, the lymphoma in our case disclosed CD10 positivity on immunohistochemistry and t(8;14)(q24;q34) translocation on cytogenetic analysis, mimicking a Burkitt/atypical Burkitt lymphoma. The problems in diagnosis are discussed...

..The extensive bone marrow metastases of the primary breast carcinoma were evident on both the Tl-201 and GA-67 scans...

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..To the best of our knowledge, this is the first report of MF occurring in an EHE; hyaluronan may have played an important role in the pathogenesis of fibrosis in this case...

..This study suggests that DTC in BM differentially distinguishes clinical outcome in patients with luminal A type tumors and that DTC-associated gene expression analysis may identify genes of potential importance in tumor dissemination...

..Finally, this review addresses the main biological questions raised by disseminated tumour cells, in particular understanding tumour dormancy and identifying metastatic stem cells...

..The aim of this study was to compare the performance of BMB, whole-body MRI and PET/CT for evaluation of BM infiltration...

..This study provides evidence to support the National Cancer Institute recommendations regarding trephine biopsy in the staging of DLCL, providing multiple levels are examined...

..The study demonstrates the usefulness of combining trephine biopsy with aspirate examination for increased detection of bone marrow metastasis...

..The authors investigated the expression of P-gp and LRP in retinoblastoma and correlated them clinicopathologically...

..In the present study, we investigated what types of tumor cells are inducible from BM adherent cells by chemical carcinogens...

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..To compare the accuracy of bone marrow biopsy (BMb) and positron emission tomography (PET) in bone marrow disease (BMD) detection, in a large multicentre population of patients with new diagnosis of malignant lymphoma...

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..We hypothesized that 3F8 dose escalation is possible without increased analgesic requirements in patients pretreated with HM3F8...

..The authors report a patient with diffuse bone marrow involvement of Hodgkin disease that appears indistinguishable from hematopoietic cytokine-mediated FDG bone marrow uptake...

..If these two molecular markers of MRD can independently predict patient outcome, they will in the future provide an objective endpoint for stopping further treatment, and serve as sensitive surrogates for evaluating adjuvant therapies. ..

..These findings will have general implications for antibody and vaccine strategies in human cancer models, and the role of polysaccharides as complementary/herbal medicine in immune-based therapies. ..

..Armed with the tools to collect samples expeditiously and to measure MRD accurately, the paradigm of treating subclinical NB can then be tested in multicenter randomized studies. ..

..abstract_text> ..

..of anti-tumor immunity? Which effector cells, cytokines, and chemokines are induced during therapy? 5) Does tumor burden correlate with tumor-induced immuno-suppression? Does surgical removal of primary tumor reverse mmuno-suppression? ..

..Aim 4: Determine if the MHC ll+li- vaccines produce a novel repertoire of peptides and if ocular melanoma patients' responses are skewed towards the novel peptides. ..

..Completion of these studies will provide the framework for conducting a clinical trial, and will provide mechanistic information for further improvement of the vaccines. ..

..A better understanding of the regulation of tumor- induced immune suppression may reveal methods for controlling these cells in cancer patients, and thereby contribute to the development of effective cancer immunotherapies. ..

..Aim 4: Determine if the MHC ll+li- vaccines produce a novel repertoire of peptides and if ocular melanoma patients' responses are skewed towards the novel peptides. ..

..Aim 4: Determine if the MHC ll+livaccines produce a novel repertoire of peptides and if ocular melanoma patients'responses are skewed towards the novel peptides. ..

..Aim 4: Determine if the MHC ll+li- vaccines produce a novel repertoire of peptides and if ocular melanoma patients' responses are skewed towards the novel peptides. ..

..Aim 4: Determine if the MHC ll+li- vaccines produce a novel repertoire of peptides and if ocular melanoma patients'responses are skewed towards the novel peptides. ..

..abstract_text> ..

..These studies will establish a mouse model system for testing the potential usefulness of this promising and novel strategy for tumor specific immunotherapy...

..Completion of these studies will therefore provide a strong foundation for future translational research employing this novel immunotherapeutic strategy. ..

..Successful completion of these experiments will result in demonstration of novel targeted effector molecules that bind selectively to tumors and activate cytotoxic prodrugs. ..

..abstract_text> ..

..These two pursuits will allow physicians to effectively treat high-risk patients early with preventive drugs, and monitor treatments' efficacy, which will improve patients' quality of life and reduce hospital costs. ..

..This proposal will use a variety of biochemical and cellular approaches as well as animal models of bone metastasis. ..

..The long term goal of this project is to evaluate the role of the Notch signaling pathway both in normal bone marrow reconstitution and in leukemias and to identify novel targets of therapeutic intervention. ..

..The focus of this group, in contrast to cancer clinical trials groups, is on improving the transplant procedure per se rather than cancer treatment in general. (End of abstract.) ..

..Successful completion of this clinical study will result in demonstration of a satisfactory safety profile and short peptides that bind selectively to tumor tissue. ..

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..abstract_text> ..

..The results of these studies may lead to new therapeutic strategies aimed at interrupting the interactions between prostate cancer cells and bone. ..

..Analogous to our work with Muc-1, we will also attempt to identify other PCD selective targets by generating and examining mAbs specific to the plasma cell glycoform of CD138. ..

..Specifically, this work will produce lead compounds for drugs with great potential efficacy in the treatment of breast cancer. ..

..3) Use the structure-based, homologous analog and biased library approach to make educated designs to increase the affinity of the Grb7 ligands ..

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..The long term goal of this project is to evaluate the role of the Notch signaling pathway both in normal bone marrow reconstitution and in leukemias and to identify novel targets of therapeutic intervention. ..

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