Dynamics of Minimal Residual Disease in Neuroblastoma Patients

Neuroblastoma is a common extracranial solid tumor of neural crest (NC) origin that accounts for up to 15% of all pediatric cancer deaths. The disease arises from a transient population of NC cells that undergo an epithelial-mesenchymal transition (EMT) and generate diverse cell-types and tissues. Patients with neuroblastoma are characterized by their extreme heterogeneity ranging from spontaneous regression to malignant progression. More than half of newly diagnosed patients present highly metastatic tumors and are stratified into a high-risk group with dismal outcome. As many as 20% of high-risk patients have residual disease that is refractory or progressive during induction chemotherapy. Although a majority of high-risk patients achieve remission, larger part of those patients has minimal residual disease (MRD) that causes relapse even after additional consolidation therapy. MRD is composed of drug-resistant tumor cells and dynamically presented as cancer stem cells (CSCs) in residual tumors, circulating tumor cells (CTCs) in peripheral blood (PB), and disseminated tumor cells (DTCs) in bone marrow (BM) and other metastatic sites. EMT appears to be a key mechanism for cancer cells to acquire MRD phenotypes and malignant aggressiveness. Due to the restricted availability of residual tumors, PB and BM have been used to isolate and analyze CTCs and DTCs to evaluate MRD in cancer patients. In addition, recent technical advances make it possible to use circulating tumor DNA (c...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research

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We describe a case of a 59-year-old male with esophageal adenocarcinoma undergoing chemotherapy presenting with a right upper lobe necrotizing pneumonia secondary to B. cereus with consequent massive hemoptysis.
Source: Respiratory Medicine Case Reports - Category: Respiratory Medicine Source Type: research
Publication date: Available online 14 October 2019Source: Pulmonary Pharmacology &TherapeuticsAuthor(s): Huda Badri, Jaclyn A. SmithAbstractCough is mediated by vagal afferent fibres innervating the larynx and proximal airways. Pre-clinical studies suggest that vagal C fibres produce Substance P, one of the tachykinin family of neuropeptides, which has been shown to enhance cough via the neurokinin-1 (NK-1) receptor and studies in animal models have also shown that NK-1 antagonists are effective at blocking induced cough. In the past, tachykinin receptor antagonists have yielded disappointing results in treating asthma...
Source: Pulmonary Pharmacology and Therapeutics - Category: Respiratory Medicine Source Type: research
Objectives The goals of this study were to compare the efficacy of the new manganese-based magnetic resonance imaging (MRI) contrast agent Mn-PyC3A to the commercial gadolinium-based agents Gd-DOTA and to Gd-EOB-DTPA to detect tumors in murine models of breast cancer and metastatic liver disease, respectively, and to quantify the fractional excretion and elimination of Mn-PyC3A in rats. Methods T1-weighted contrast-enhanced MRI with 0.1 mmol/kg Mn-PyC3A was compared with 0.1 mmol/kg Gd-DOTA in a breast cancer mouse model (n = 8) and to 0.025 mmol/kg Gd-EOB-DTPA in a liver metastasis mouse model (n = 6). The fractional...
Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
This study aims at prospectively evaluating an adapted DWI sequence ex vivo and in vivo in oncologic patients undergoing abdominal MRI. Methods This institutional review board–approved, prospective study included phantom measurements, volunteer examinations, and oncologic patient examinations of the abdomen. Fifty-seven MRI examinations in 54 patients (mean age, 58 years; range, 21–90 years) were included into the analysis. The MRI examination were performed at a 1.5 T MRI scanner (MAGNETOM Aera; Siemens Healthcare, Erlangen, Germany) and included both a standard EPI-DWI (s-DWI; b = 50, 900 s/mm2) and an ada...
Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
ConclusionOur clinical outcomes are comparable overall to the three main published articles on this topic. The risk of infection and benefits of preventative fixation were apparent in our cohort.Level of evidenceIV, retrospective study.
Source: Orthopaedics and Traumatology: Surgery and Research - Category: Orthopaedics Source Type: research
ConclusionNeoadjuvant chemotherapy followed by laparoscopic and open radical hysterectomy seems to be a safe treatment option for locally advanced cervical cancer, in terms of similar survival outcomes and morbidity of treatment with CCRT. However, the present study is too limited to permit conclusions due to its small sample size and retrospective design despite statistical methods for adjusting confounding factors.
Source: Journal of Minimally Invasive Gynecology - Category: OBGYN Source Type: research
ConclusionOverall hyperplasia incidence is increasing. While BMI is elevated, there was no upward trend observed. Does the insidious decline in age demographic suggest that hyperplasia is occurring in younger women? Our review did not demonstrate a continuous increase in atypia, however there was a higher incidence in the 2013 group, who were also the most obese. Adherence to best practice surveillance in our hospitals was falling short.
Source: Journal of Minimally Invasive Gynecology - Category: OBGYN Source Type: research
ConclusionSingle-site laparoscopy is an alternative surgical choice for endometrial cancer.
Source: Journal of Minimally Invasive Gynecology - Category: OBGYN Source Type: research
ConclusionMarkers of systemic inflammatory response provide useful prognostic information and lymphocyte-to-monocyte ratio is the most reliable independent prognostic factor of overall survival in patients with ovarian clear cell carcinoma.
Source: Journal of Minimally Invasive Gynecology - Category: OBGYN Source Type: research
Publication date: November–December 2019Source: Journal of Minimally Invasive Gynecology, Volume 26, Issue 7, SupplementAuthor(s): SR Pena, J Brown, M Wally, R Seymour, JR Hsu, RW NaumannStudy ObjectiveTo determine opioid and benzodiazepine prescribing practices in the gynecologic oncology population and determine if this patient population is at risk for narcotic abuse.DesignThis was an IRB-approved, retrospective study of opioid and benzodiazepine prescriptions for cervical, ovarian (including fallopian tube and primary peritoneal), and uterine cancer patients within a single healthcare system from January 2016 to ...
Source: Journal of Minimally Invasive Gynecology - Category: OBGYN Source Type: research
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