64,186 results match your criteria diffuse tumor


Implication of immune cell signature of tumor microenvironment in diffuse large B-cell lymphoma.

Hematol Oncol 2021 Jul 31. Epub 2021 Jul 31.

Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Diffuse large B-cell lymphoma (DLBCL) is a genetically heterogeneous disease with complex tumor microenvironment (TME) alterations. However, immune cell signatures of TME and their prognostic value remain unclear in DLBCL. We aimed to identify high-risk DLBCL with specific immune cell signatures in TME. Read More

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A Rational design of multi-functional nanoplatform: Fluorescent-based "off-on" theranostic gold nanoparticles modified with D-α-Tocopherol succinate.

J Photochem Photobiol B 2021 Jul 16;222:112261. Epub 2021 Jul 16.

Research Institute for Health Science and Technologies (SABITA), 34810 Istanbul, Turkey; International School of Medicine, Medical Biochemistry, Istanbul Medipol University, 34810 Istanbul, Turkey. Electronic address:

It is crucial to develop nanocarrier systems to detect and treat drug-resistant micro tumors to prevent recurrence and/or metastasis of cancer. Due to their exceptional features such as biocompatibility, easy surface modification, serving as imaging and therapeutic agent, gold nanoparticles (AuNPs) draw attention as theranostic agents. It is beneficial to combine AuNPs with a second imaging and/or treatment modality such as photodynamic therapy (PDT). Read More

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Diffuse intrathyroidal dissemination of papillary thyroid carcinoma with no stromal fibrosis at presentation: A pattern of aggressive differentiated thyroid carcinoma.

Pathol Res Pract 2021 Jun 23;224:153510. Epub 2021 Jun 23.

Department of General Surgery, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu, 210029, China. Electronic address:

Background: Multifocal Papillary thyroid carcinoma (PTC) is a very common condition. In certain cases, it is possible to find tens to hundreds of foci with a diffuse intrathyroidal spread in the whole thyroid with no stromal fibrosis. Herein, PTC with such features was nominated as diffuse disseminate variant (DDV) PTC. Read More

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Current progress and future perspectives of research on intravascular large B-cell lymphoma.

Cancer Sci 2021 Jul 30. Epub 2021 Jul 30.

Department of Hematology and Oncology, Nagoya University Graduate School of Medicine.

Intravascular large B-cell lymphoma is a rare disease of the large B cells characterized by selective growth in the lumina of small vessels in systemic organs. Since first reported in 1959, the difficulty of obtaining sufficient tumor cells from biopsy specimens has hampered the elucidation of its underlying biology. Recent progress using xenograft models and plasma cell-free DNA has uncovered genetic features that are similar to those of activated B-cell type diffuse large B-cell lymphoma, including MYD88 and CD79B mutations and frequent alterations in immune check point-related genes such as PD-L1 and PD-L2. Read More

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CD5+ Diffuse Large B-Cell Lymphoma With Leukemic Transformation: A Rare Case With Central Nervous System Involvement, Treated With R-CHOP and Intrathecal Methotrexate/Cytarabine.

Cureus 2021 Jun 22;13(6):e15838. Epub 2021 Jun 22.

Department of Oncology, University of Texas MD Anderson Cancer Center, Galveston, USA.

Diffuse large B-cell lymphoma (DLBCL) is one of several subtypes of non-Hodgkin's lymphoma, and one that can present in a myriad of ways. One unique and particularly aggressive presentation is leukemic transformation with CD5 positivity, which leads to systemic symptoms, a relatively high peripheral tumor load, and higher rates of CNS involvement. The prevalence of leukemic transformation has not been determined, as published literature is limited to case reports and small case series. Read More

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Neonatal streptozotocin treatment rapidly causes different subtype of hepatocellular carcinoma without persistent hyperglycemia in 4CS mice fed on a normal diet.

Pathol Res Pract 2021 Jul 21;225:153559. Epub 2021 Jul 21.

Department of Pathology and Laboratory Medicine and Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan; Molecular Pathology and Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan. Electronic address:

Although diabetes mellitus (DM) is a well-known risk factor for hepatocellular carcinoma (HCC), the underlying mechanisms have not yet to be defined. We previously reported that DIAR mice fed with standard murine diet developed type 1 diabetes and HCC at age of 16 weeks old with a neonatal streptozotocin treatment (n-STZ). Because DIAR mice did not manifest obesity nor develop steatohepatitis, hyperglycemia with streptozotocin trigger or streptozotocin alone might turn on the hepato-carcinogenesis. Read More

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Outcomes of cardiac diffuse large B-cell lymphoma (DLBCL) in the rituximab era.

Int J Cardiol 2021 Jul 26. Epub 2021 Jul 26.

Harrington Heart and Vascular Institute, University Hospitals, Cleveland, OH, United States of America; School of Medicine, Case Western Reserve University, Cleveland, OH, United States of America. Electronic address:

Background Cardiac diffuse large B-cell lymphoma (cDLBCL) are extremely rare. Introduction of rituximab has significantly improved survival in non-cardiac DLBCL, but there is limited data regarding outcomes of cDLBC. We sought to evaluate the outcomes of cDLBCL in both pre- and rituximab eras. Read More

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Smart Design of a pH-Responsive System Based on pHLIP-Modified Magnetite Nanoparticles for Tumor MRI.

ACS Appl Mater Interfaces 2021 Jul 29. Epub 2021 Jul 29.

Postovsky Institute of Organic Synthesis, Russian Academy of Sciences (Ural Branch), 620108 Yekaterinburg, Russia.

Magnetic FeO nanoparticles (MNPs) are often used to design agents enhancing contrast in magnetic resonance imaging (MRI) that can be considered as one of the efficient methods for cancer diagnostics. At present, increasing the specificity of the MRI contrast agent accumulation in tumor tissues remains an open question and attracts the attention of a wide range of researchers. One of the modern methods for enhancing the efficiency of contrast agents is the use of molecules for tumor acidic microenvironment targeting, for example, pH-low insertion peptide (pHLIP). Read More

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[Idiopathic orbital inflammation].

Authors:
Wolfgang E Lieb

Ophthalmologe 2021 Jul 29. Epub 2021 Jul 29.

ViDia Christliche Kliniken Karlsruhe, St. Vincentius-Kliniken, Steinhäuserstr. 18, 76135, Karlsruhe, Deutschland.

Background: Orbital inflammatory disease encompasses a spectrum of disorders. Idiopathic orbital inflammation (IOI) is often a diagnosis of exclusion, which needs to be differentiated from infections, systemic inflammatory disease, and neoplasms. IOI includes anterior inflammation with dacryoadenitis, myositis, perineuritis of the optic nerve, periscleritis, diffuse sclerosing inflammation, and orbital apex inflammation. Read More

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Prognostic significance of FCGR2B expression for the response of DLBCL patients to rituximab or obinutuzumab treatment.

Blood Adv 2021 Aug;5(15):2945-2957

School of Cancer Sciences, University of Southampton, Southampton, United Kingdom.

Fc γ receptor IIB (FcγRIIB) is an inhibitory molecule capable of reducing antibody immunotherapy efficacy. We hypothesized its expression could confer resistance in patients with diffuse large B-cell lymphoma (DLBCL) treated with anti-CD20 monoclonal antibody (mAb) chemoimmunotherapy, with outcomes varying depending on mAb (rituximab [R]/obinutuzumab [G]) because of different mechanisms of action. We evaluated correlates between FCGR2B messenger RNA and/or FcγRIIB protein expression and outcomes in 3 de novo DLBCL discovery cohorts treated with R plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) reported by Arthur, Schmitz, and Reddy, and R-CHOP/G-CHOP-treated patients in the GOYA trial (NCT01287741). Read More

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Single-nucleotide Fcγ receptor polymorphisms do not impact obinutuzumab/rituximab outcome in patients with lymphoma.

Blood Adv 2021 Aug;5(15):2935-2944

School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.

Single-nucleotide polymorphisms (SNPs) have been shown to influence Fcγ receptor (FcγR) affinity and activity, but their effect on treatment response is unclear. We assessed their importance in the efficacy of obinutuzumab or rituximab combined with chemotherapy in untreated advanced follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL) in the GALLIUM (www.clinicaltrials. Read More

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TGF-β links glycolysis and immunosuppression in glioblastoma.

Histol Histopathol 2021 Jul 29:18366. Epub 2021 Jul 29.

Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China.

Glioblastoma (GBM) is the most common and aggressive brain tumor in adults, characterized by diffuse infiltration, dysplasia, and resistance to therapy. Metabolic remodeling and immunosuppression are typical events which contribute to GBM progression, but the molecular link between these two events remains largely undetermined. Studies have shown that high levels of transforming growth factor-β (TGF-β) and its receptors are associated with glioma malignancy and a poor prognosis. Read More

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Safety and Efficacy of Intravitreal Chemotherapy (Melphalan) to Treat Vitreous Seeds in Retinoblastoma.

Front Pharmacol 2021 12;12:696787. Epub 2021 Jul 12.

Department of Surgery, Ophthalmology Division, King Hussein Cancer Center, Amman, Jordan.

Active vitreous seeds in eyes with retinoblastoma (Rb) adversely affects the treatment outcome. This study aimed to investigate the safety and efficacy of intravitreal melphalan chemotherapy (IViC) as a treatment for recurrent and refractory vitreous seeds in patients with Rb. We used a retrospective non-comparative study of patients with intraocular Rb who had vitreous seeds and were treated by IViC (20-30 μg of melphalan) using the safety-enhanced anti-reflux technique. Read More

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Diffuse bone marrow uptake related to granulocyte colony-stimulating factor-producing maxillary sinus carcinoma on 4-borono-2-F-fluoro-L-phenylalanine positron emission tomography/computed tomography.

World J Nucl Med 2021 Apr-Jun;20(2):188-191. Epub 2020 Oct 23.

Department of Oral and Maxillofacial Surgery, Kochi Medical School, Kochi University, Nangoku, Kochi, Japan.

Granulocyte colony-stimulating factor (G-CSF) can be produced by tumor cells and is known to promote tumor growth, thereby potentially accelerating disease progression. Squamous cell carcinoma (SCC) at maxillary sinus is aggressive growth with poor prognosis. Maxillary sinus carcinomas are rare and can be clinically silent in the early stages or manifest with the same signs and symptoms of more common illnesses, leading to their delayed diagnosis of disease. Read More

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October 2020

Primary Cauda Equina Lymphoma Treated with CNS-Centric Approach: A Case Report and Literature Review.

J Blood Med 2021 21;12:645-652. Epub 2021 Jul 21.

Division of Hematology and Medical Oncology, Mayo Clinic Florida, Jacksonville, FL, USA.

Primary cauda equina lymphoma is an extremely rare entity previously documented in only 24 reported cases. Primary cauda equina lymphoma represents a subtype of neurolymphomatosis, which occurs when lymphoma cells with neurotropism infiltrate and destroy peripheral nerves, spinal nerve roots, nerve plexuses and cranial nerves. The cauda equina is an anatomic structure located in the lower part of the spinal canal consisting of multiple lumbar and sacral nerve roots. Read More

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Computed Tomography Morphological Classification of Lung Adenocarcinoma and Its Correlation with Epidermal Growth Factor Receptor Mutation Status: A Report of 1075 Cases.

Int J Gen Med 2021 21;14:3687-3698. Epub 2021 Jul 21.

Department of Radiology, University of Chinese Academy of Sciences Chongqing Renji Hospital (Fifth People's Hospital of Chongqing), Chongqing, 400062, People's Republic of China.

Background: Many delayed diagnoses of lung adenocarcinoma (LADC) are identified due to poor understanding of protean imaging findings. Moreover, clarifying the relationship between computed tomography (CT) morphological classification and epidermal growth factor receptor (EGFR) mutations of LADC might inform therapeutic decision-making while obtaining pathological specimens is difficult. Here, we retrospectively analyzed CT manifestations of LADC and investigated the morphological classification of tumors in relation to EGFR mutation status. Read More

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Malignant idiopathic intracranial hypertension revealed a hidden primary spinal leptomeningeal medulloblastoma.

BMJ Case Rep 2021 Jul 28;14(7). Epub 2021 Jul 28.

Department of Neurology, National Neurosciences Institute, King Fahad Medical City, Riyadh, Saudi Arabia.

Frequently the cause of raised intracranial pressure remains unresolved and rarely is related to spinal tumours, moreover less to spinal medulloblastoma without primary brain focus. An 18-year-old woman had a 3-month history of headache and impaired vision. Neurological examination revealed bilateral sixth cranial nerve palsies with bilateral papilloedema of grade III. Read More

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Damage Control Surgery Saves Patient with Gastric Lymphoma from Radical Gastrectomy.

J Coll Physicians Surg Pak 2021 Aug;31(8):978-981

Department of General Surgery, Second Hospital of Lanzhou University, Lanzhou, Gansu, China.

The concept of damage control surgery was first introduced in the 1990s. It has great significance in the treatment for critically ill patients, which not only greatly improves survival rate, but also helps doctors avoiding misdiagnosis and mistreatment. Herein, we present a case of gastric perforation caused by neoplasm with critical condition of the patient. Read More

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Prognostic Role of Receptor Tyrosine Kinase-Like Orphan Receptors in Intestinal-Type Gastric Cancer.

Asian Pac J Cancer Prev 2021 Jul 1;22(7):2125-2134. Epub 2021 Jul 1.

Department of Biochemistry, All India Institute of Medical Sciences (AIIMS) Bhopal, Saket Nagar, Bhopal, India.

Background: Gastric cancer (GC) is diagnosed at advanced stages and has high mortality rates. Surgical resection and adjuvant chemotherapy are the main therapeutic approaches for GC. Despite curative resection, recurrence and metastasis contribute to a high mortality rate in patients with GC. Read More

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When drug nanocarriers miss their target: extracellular diffusion and cell uptake are not enough to be effective.

Biomater Sci 2021 Jul 27. Epub 2021 Jul 27.

Institut Galien Paris-Saclay, UMR 8612, CNRS, Université Paris-Saclay, Faculté de Pharmacie, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France.

Biocompatible nanoscale iron carboxylate metal-organic frameworks (nanoMOFs) have already demonstrated their ability to efficiently deliver various therapeutic molecules. The versatility of the synthesis methods and functionalization strategies could further improve their drug carrier potential. However, in oncology, preclinical evaluation still suffers from the lack of relevant models able to mimic the heterogeneity and the microenvironment of human tumors. Read More

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Profiling of ribose methylations in ribosomal RNA from diffuse large B-cell lymphoma patients for evaluation of ribosomes as drug targets.

NAR Cancer 2020 Dec 22;2(4):zcaa035. Epub 2020 Dec 22.

Department of Cellular and Molecular Medicine, The Panum Institute, University of Copenhagen, 3B Blegdamsvej, 18.2.20, DK-2200 Copenhagen N, Denmark.

Cancer cells are addicted to ribosome biogenesis and high levels of translation. Thus, differential inhibition of cancer cells can be achieved by targeting aspects of ribosome biogenesis or ribosome function. Using RiboMeth-seq for profiling of the ∼112 2'-O-Me sites in human ribosomal RNA, we demonstrated pronounced hypomethylation at several sites in patient-derived diffuse large B-cell lymphoma (DLBCL) cell lines with a more severe perturbation in ABC-DLBCL compared to GBC-DLBCL. Read More

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December 2020

Remission of Pediatric Diffuse Intrinsic Pontine Glioma: Case Report and Review of the Literature.

J Pediatr Neurosci 2021 Jan-Mar;16(1):1-4. Epub 2021 Jun 25.

Department of Neurology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal.

Background: Diffuse midline glioma (DMG) is one of the most aggressive pediatric tumors. Approximately 60% of pediatric DMG patients die within the first year of diagnosis. Complete clinical and radiological remission of DMG is extremely rare. Read More

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Prediction and characterization of diffuse large B-cell lymphoma cell-of-origin subtypes using targeted sequencing.

Future Oncol 2021 Jul 27. Epub 2021 Jul 27.

Genentech, Inc., South San Francisco, CA 94080, USA.

The aim of the present study was to determine cell of origin (COO) from a platform using a DNA-based method, COO DNA classifier (COODC). A targeted exome-sequencing platform that applies the mutational profile of a sample was used to classify COO subtype. Two major mutational signatures associated with COO were identified: Catalogue of Somatic Mutations in Cancer (COSMIC) signature 23 enriched in activated B-cell (ABC) and COSMIC signature 3, which suggested increased frequency in germinal center B-cell (GCB). Read More

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Intrahepatic bile duct rupture associated with IgG4-related sclerosing cholangitis presenting hepatic inflammatory pseudotumor.

Clin J Gastroenterol 2021 Jul 27. Epub 2021 Jul 27.

Department of Surgery, Kyoto Katsura Hospital, 17 Yamadahirao-cho, Nishikyo-ku, Kyoto City, Kyoto, 615-8256, Japan.

A 67-year-old man with a low-grade fever was found to have a 25-mm diameter tumor of the left hepatic umbilical portion. The tumor was accompanied by occlusion of the left portal vein. Positron emission tomography using fluorodeoxyglucose showed that the tumor had abnormally high metabolic activity. Read More

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Recurrent oncocytic adrenocortical carcinoma: implementing diagnostic criteria in a case report with the longest survival.

Ann Ital Chir 2021 ;92:293-298

Introduction: Oncocytic adrenocortical tumors represent a subtype of the adrenal cortex neoplasms. These tumors can be divided into oncocytomas, oncocytic neoplasms of uncertain malignancy and carcinomas (OACs). To date, only 34 cases of OAC have been reported. Read More

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January 2021

Primary cardiac B cell lymphoma in an immunocompetent patient.

BMJ Case Rep 2021 Jul 26;14(7). Epub 2021 Jul 26.

Cardiology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Itabashi-ku, Tokyo, Japan.

Primary cardiac lymphoma is a rare entity of extranodal lymphoma and is observed with increasing frequency in immunocompromised hosts. However, a considerable proportion of cardiac lymphomas still occur in immunocompetent patients. We report the case of a 55-year-old immunocompetent Japanese man with a large amount of pericardial fluid and the presentation of heart failure secondary to primary cardiac B cell lymphoma, which was diagnosed by cytological examination of pericardial fluid and imaging. Read More

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A case report of secondary neurolymphomatosis showing selective nerve infiltration and massive lumbar plexus enlargement.

BMC Neurol 2021 Jul 27;21(1):296. Epub 2021 Jul 27.

Department of Neurology, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Shimotsuga, 321-0293, Japan.

Background: Neurolymphomatosis (NL) is a rare manifestation of malignant lymphoma that shows selective infiltration to the peripheral nervous system primarily or secondarily. We report a patient with secondary NL caused by germinal center B-cell (GCB)-type diffuse large B-cell lymphoma (DLBCL) who showed selective infiltration of the lumbar plexus to the spinal cord and massive nerve enlargement resulting in severe pain.

Case Presentation: A 72-year-old female exhibited asymmetric motor and sensory impairments and pain in the lower limbs that progressed for five months. Read More

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Drug resistance evaluation in novel 3D in vitro model.

Biomed Pharmacother 2021 Jun 31;138:111536. Epub 2021 Mar 31.

Institute of Health Sciences, Collegium Medicum, University of Zielona Gora, Zyty 28 St, 65-046 Zielona Gora, Poland. Electronic address:

Ovarian cancer rates the highest mortality among all gynecological malignancies. The main reason for high mortality is the development of drug resistance. It can be related to changes in the expression of many drug resistance genes as well as expression of extracellular matrix proteins and cell density in the tumor. Read More

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Enhanced detection of minimal residual disease by targeted sequencing of phased variants in circulating tumor DNA.

Nat Biotechnol 2021 Jul 22. Epub 2021 Jul 22.

Division of Oncology, Department of Medicine, Stanford University, Stanford, CA, USA.

Circulating tumor-derived DNA (ctDNA) is an emerging biomarker for many cancers, but the limited sensitivity of current detection methods reduces its utility for diagnosing minimal residual disease. Here we describe phased variant enrichment and detection sequencing (PhasED-seq), a method that uses multiple somatic mutations in individual DNA fragments to improve the sensitivity of ctDNA detection. Leveraging whole-genome sequences from 2,538 tumors, we identify phased variants and their associations with mutational signatures. Read More

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Prevalence of mesothelin expression in peritoneal disease from colorectal and appendiceal cancers.

J Surg Oncol 2021 Jul 26. Epub 2021 Jul 26.

Division of Colorectal Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.

Background: Mesothelin is a cell surface glycoprotein overexpressed in 28%-58% of colorectal cancer (CRC). We hypothesized that CRC mesothelin expression contributes to peritoneal spread and that it is selectively overexpressed in those with peritoneal metastasis versus distant metastasis.

Methods: This case-controlled study involved mesothelin immunohistochemistry staining of tumor specimens from patients with metastatic CRC/appendiceal cancers between 2017 and 2019. Read More

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