Low-grade and intermediate-grade malignant epithelial tumors of the thymus: thymomas

2015 ◽  
pp. 65-103 ◽  
Author(s):  
Alberto M. Marchevsky ◽  
Saul Suster ◽  
Mark R. Wick
Keyword(s):  
Low Grade ◽  
Intermediate Grade ◽  
Epithelial Tumors ◽  
Tumors Of The Thymus

Radiation Therapy for Stage I Primary Orbital Non-Hodgkin's Lymphomas

1997 ◽  
Vol 83 (5) ◽  
pp. 822-825 ◽  
Author(s):  
Haldun Şükrü Erkal ◽  
Meltem Serin ◽  
Serpil Dizbay Sak ◽  
Ahmet Çakmak
Keyword(s):  
Radiation Therapy ◽  
Combination Chemotherapy ◽  
Disease Free Survival ◽  
Stage I ◽  
Entire Group ◽  
Low Grade ◽  
Intermediate Grade ◽  
Chop Regimen ◽  
Survival Probabilities ◽  
Hodgkin's Lymphomas

Aims and Background The orbit is an uncommon primary site for non-Hodgkin's lymphomas (NHL), and it accounts for less than 1% of all sites of primary presentations. We report the experience of the Department of Radiation Oncology at Ankara University Faculty of Medicine with radiation therapy in treatment of patients with stage I primary orbital NHL. Methods From February 1978 through August 1993, 14 patients with stage I primary orbital NHL were treated with radiation therapy. According to the Working Formulation classification, 8 patients had low-grade and 6 had intermediate-grade lymphomas. The most commonly used radiation therapy technique was a single anterior field with a Cobalt-60 unit, delivering 40 Gy in 2 Gy daily fractions. Two patients with intermediate-grade lymphomas received the CHOP regimen following radiation therapy. Results Follow-up ranged from 0.8 to 18.3 years (median, 10.3 years). Local control was achieved in all patients. Two patients with low-grade lymphomas relapsed locally and were successfully salvaged with radiation therapy. Three patients with intermediate-grade lymphomas failed systemically. Salvage therapy consisted of combination chemotherapy for 2 of them but was unsuccessful. Overall survival probabilities at 2, 5 and 10 years were 78.6%, 61.1% and 52.4%, respectively, for the entire group of 14 patients. Overall, cause-specific and disease-free survival probabilities were higher for patients with low-grade lymphomas than for those with intermediate-grade lymphomas (P = 0.03, P = 0.03 and P = 0.06, respectively). Cataracts were observed in 9 and lacrimal disorders in 4 patients. Conclusions The study suggests that among stage I primary orbital NHL, low-grade lymphomas could be treated with radiation therapy alone, whereas combination chemotherapy could accompany radiation therapy for intermediate-grade lymphomas.

scholarly journals Prognostic factors in non-Hodgkin lymphomas

2000 ◽  
Vol 118 (1) ◽  
pp. 7-12 ◽  
Author(s):  
Karin Zattar Cecyn ◽  
José Salvador Rodrigues de Oliveira ◽  
Antônio Correia Alves ◽  
Maria Regina Regis Silva ◽  
José Kerbauy
Keyword(s):  
Prognostic Factors ◽  
Hodgkin Lymphoma ◽  
Low Grade ◽  
High Grade ◽  
Cns Involvement ◽  
Intermediate Grade ◽  
Non Hodgkin Lymphoma ◽  
Tumor Dissemination ◽  
Mediastinal Disease ◽  
Extranodal Disease

CONTEXT: In Hodgkin's disease, each clinical or pathologic stage can be related to the extent of the area involved and predicts the next anatomical region at risk for tumor dissemination. OBJECTIVE: To determine the best prognostic factors that could predict survival in non-Hodgkin lymphoma cases. DESIGN: A retrospective study. LOCATION: Department of Hematology and Transfusion Medicine, Universidade Federal de São Paulo - Escola Paulista de Medicina. PARTICIPANTS: 142 patients with non-Hodgkin lymphoma diagnosed between February 1988 and March 1993. MAIN MEASUREMENTS: Histological subset, Sex, Age, Race, B symptoms, Performance status, Stage, Extranodal disease, Bulk disease, Mediastinal disease, CNS involvement, BM infiltration, Level of DHL, Immunophenotype. RESULTS: In the first study (113 patients), the following variables had a worse influence on survival: yellow race (P<0.1); ECOG II, III e IV (P<0.1) and extranodal disease (P<0.1) for high grade lymphomas; constitutional symptoms (P<0.1), ECOG II, III e IV (P<0.1) and involvement of CNS (P<0.1) for intermediate grade and the subtype lymphoplasmocytoid (P=0.0186) for low grade lymphomas. In the second survey (93 patients), when treatment was included, the variables related to NHL survival were: CNS involvement (P<0.1) for high grade lymphomas, constitutional symptoms (P<0.1), ECOG II, III, IV (P=0.0185) and also CNS involvement (P<0.1) for the intermediate group. There were no variables related to the survival for low-grade lymphomas. CONCLUSIONS: The intermediate grade lymphomas were more compatible with data found in the literature, probably because of the larger number of patients. In this specific case, the treatment did not have an influence on the survival.

Epithelial tumors of the thymus

1998 ◽  
Vol 29 (1) ◽  
pp. 104
Author(s):  
Robert E Anderson
Keyword(s):  
Epithelial Tumors ◽  
Tumors Of The Thymus

Oncogenetic tree models based on cytogenetic data: new insights into the development of epithelial tumors of the thymus

2005 ◽  
Vol 158 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Ralf J. Rieker ◽  
Roland Penzel ◽  
Sebastian Aulmann ◽  
Hendrik Blaeker ◽  
Alicia Morresi-Hauf ◽  
...  
Keyword(s):  
Epithelial Tumors ◽  
Cytogenetic Data ◽  
Tree Models ◽  
Tumors Of The Thymus

Radiomics features of ground glass nodules tailored different pathological grades of lung adenocarcinoma.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e23127-e23127
Author(s):  
C Zhang ◽  
Haoran Zhai ◽  
Lan He ◽  
Zai-Yi Liu ◽  
Yi-Long Wu ◽  
...  
Keyword(s):  
Smoking Status ◽  
Ground Glass ◽  
Low Grade ◽  
High Grade ◽  
Ratio Model ◽  
Intermediate Grade ◽  
Potential Predictor ◽  
Continuation Ratio ◽  
Radiomics Signature ◽  
Ground Glass Nodules

e23127 Background: Different pathological subtypes as well as different grades of adenocarcinoma based on the IASLC/ATS/ERS classification had been proven to be stage-independent predictor of survival. Radiomics features, as a novel analytic method, has been increasingly applied in variety cancer research and may be a potential predictor for preoperatively differentiating pathological grades of adenocarcinoma. Methods: Patients (pts) with radiological proved as solitary ground glass nodule were eligible in this study. Radiomics features derived from computed tomography (CT) images were extracted by Chinese Academy of Science. All pts will be categorized into three groups with lepidic predominance as low-grade, acinar and papillary predominance as intermediate-grade, micropapillary and solid predominance as high-grade. We used L1 penalized constrained continuation ratio model to select relevant radiomics features, and corresponding radiomics signature was constructed. Association between the radiomics signature and pathological grades of adenocarcinoma was explored using the Kruskal-Wallis test and C-index was performed to test the efficacy of differentiating. Results: 82 pts were included in this study. Low-grade, intermediate-grade and high-grade contained 15 (18.3%), 53 (64.6%), 14 (17.1%) pts respectively. 475 radiomics features were extracted from thin section CT image and 10 of them selected through L1 penalized constrained continuation ratio model composed radiomics signature which significantly associated with pathological grades (P < 0.0001). C-index for radiomics signature were 0.813 (95%CI 0.793-0.833). Since clinical characters including gender, age, smoking status, NSE, CEA and CYFRA21-1 were not associated with different grades of adenocarcinoma, we could not establish nomogram based on the radiomics signature and correlated clinical characters. Conclusions: Radiomics features only can be a potential predictor for preoperatively differentiating pathological grades of adenocarcinoma, which may be a more applicable clinical predictor for patients’ survival. Yet large sample sizes are warranted to confirm the results.

The role of procollagen alpha 1 type 1 (Col1A1) on invasion and cellular signaling in glioma cells.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e23165-e23165
Author(s):  
Niramol Savaraj ◽  
Shumei Chen ◽  
Chunjing Wu ◽  
Ying-Ying Li ◽  
Medhi Wangpaichitr ◽  
...  
Keyword(s):  
Cell Lines ◽  
Glioma Cell ◽  
Cellular Proliferation ◽  
Cellular Signaling ◽  
Migration And Invasion ◽  
G1 Arrest ◽  
Low Grade ◽  
Intermediate Grade

e23165 Background: We have previously shown that Procollagen alpha 1 type 1 (Col1A1) is found more in low and intermediate grade glioma and less often in glioblastoma(GBM) (Cancer Invest. 23:577, 2005). We now investigate their role in cellular function. Methods: 4 glioma cell lines: Glioma 1 and U118 express high amount of Col1A1 ( Col1A1+) ; A172 and SW1783 express insignificant amount of Col1A1 ( Col1A1 - ) as the model . All four cell lines express SPARC. Scratch, transwell, and metrigel assay were used to study migration and invasion. Cell cycles were analyzed by flowcytometry. Results: U118 has the highest amount of SPARC followed by A172, SW1783 and Glioma 1. Thus it does not appear to have any relationship between these two proteins which are known as binding partner. Glioma 1 showed the least invasion and migration followed by U118, SW1783 and A172. Thus, Col1A1 expression appear to correlate with invasiveness. To further confirm this, we have silence Col1A1 in Glioma 1 and U118 using both siRNA and shRNA. All clones exhibit more migration and invasion. However, it does not affect both intracellular and extracellular levels of SPARC. Silencing Col1A1 results in increasing G2M arrest; 11% in U118 and 6% in Glioma 1. However it does not affect cellular proliferation. To further verify this, we have overexpressed Col1A1 in A172 and SW1783 using plasmid containing Col1A1 and DDK tag. These Col1A1 (+) A172 and SW1783 transfectants exhibit less migration and invasion. However, there is no effect on SPARC levels. These Col1A1 positive cells exhibit 12% increase in Go/G1 arrest and decrease in proliferation. A limited protein array also showed that silencing Col1A1 increase in STAT3, 5 and 6 and AKT levels. Interestingly, a difference in sensitivity to STAT3/5 inhibitors also noted in parental and their Col1A1 knock down transfectants. Conclusions: our results support the role of Col1A1 in glioma cell invasiveness, and hence confirm our previous data which showed that Col1A1 is found more in low grade and intermediate grade glioma. Thus, Col1A1 could be an additional useful marker to assess the aggressiveness of GBM beside histopathological grading. Col1A1 may also play a role in cellular signaling pathway.

scholarly journals Molecular Profiling of Appendiceal Epithelial Tumors Using Massively Parallel Sequencing to Identify Somatic Mutations

2014 ◽  
Vol 60 (7) ◽  
pp. 1004-1011 ◽  
Author(s):  
Xiaoying Liu ◽  
Kabir Mody ◽  
Francine B de Abreu ◽  
J Marc Pipas ◽  
Jason D Peterson ◽  
...  
Keyword(s):  
Pseudomyxoma Peritonei ◽  
Somatic Mutations ◽  
Massively Parallel Sequencing ◽  
Janus Kinase ◽  
Molecular Heterogeneity ◽  
Low Grade ◽  
Viral Oncogene ◽  
Mutational Spectra ◽  
Epithelial Tumors ◽  
Viral Oncogene Homolog

Abstract BACKGROUND Some epithelial neoplasms of the appendix, including low-grade appendiceal mucinous neoplasm and adenocarcinoma, can result in pseudomyxoma peritonei (PMP). Little is known about the mutational spectra of these tumor types and whether mutations may be of clinical significance with respect to therapeutic selection. In this study, we identified somatic mutations using the Ion Torrent AmpliSeq Cancer Hotspot Panel v2. METHODS Specimens consisted of 3 nonneoplastic retention cysts/mucocele, 15 low-grade mucinous neoplasms (LAMNs), 8 low-grade/well-differentiated mucinous adenocarcinomas with pseudomyxoma peritonei, and 12 adenocarcinomas with/without goblet cell/signet ring cell features. Barcoded libraries were prepared from up to 10 ng of extracted DNA and multiplexed on single 318 chips for sequencing. Data analysis was performed using Golden Helix SVS. Variants that remained after the analysis pipeline were individually interrogated using the Integrative Genomics Viewer. RESULTS A single Janus kinase 3 (JAK3) mutation was detected in the mucocele group. Eight mutations were identified in the V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (KRAS) and GNAS complex locus (GNAS) genes among LAMN samples. Additional gene mutations were identified in the AKT1 (v-akt murine thymoma viral oncogene homolog 1), APC (adenomatous polyposis coli), JAK3, MET (met proto-oncogene), phosphatidylinositol-4,5-bisphosphate 3-kinase (PIK3CA), RB1 (retinoblastoma 1), STK11 (serine/threonine kinase 11), and tumor protein p53 (TP53) genes. Among the PMPs, 6 mutations were detected in the KRAS gene and also in the GNAS, TP53, and RB1 genes. Appendiceal cancers showed mutations in the APC, ATM (ataxia telangiectasia mutated), KRAS, IDH1 [isocitrate dehydrogenase 1 (NADP+)], NRAS [neuroblastoma RAS viral (v-ras) oncogene homolog], PIK3CA, SMAD4 (SMAD family member 4), and TP53 genes. CONCLUSIONS Our results suggest molecular heterogeneity among epithelial tumors of the appendix. Next generation sequencing efforts have identified mutational spectra in several subtypes of these tumors that may suggest a phenotypic heterogeneity showing mutations that are relevant for targeted therapies.

Sign in / Sign up

Export Citation Format

Share Document