Interactive Pathology Tutorial in Neoplastic Hematology Disorders for Medical Hematology-Oncology Fellows.

Hematology-oncology (HO) fellows receive limited instruction in the process of establishing a diagnosis for hematologic neoplasms, and learning neoplastic hematology often occurs in limited encounters. In the current study, we developed a web-based interactive pathology tutorial in neoplastic hematologic disorders for HO fellows to work up simulated cases and establish the diagnosis. An online system ("Pathology Playground") was utilized to load case materials including microscopic images and ancillary studies. Twelve high-yield simulated cases of common leukemias and lymphoma were included. At the beginning of each case, trainees review the clinical history and slide images, and then, they are given the option to request additional pathology work-up. Based on the results, they can enter their diagnostic impression. If the diagnosis is correct, the user is shown a short educational presentation. If the diagnosis is not correct, the user gets notified by the message "Incorrect." The tutorial was integrated in the educational curriculum of our HO fellowship program, and bimonthly teaching sessions were held to review two cases each time. During the sessions, trainees request ancillary studies to complete the diagnostic work-up using the software and interpret the findings. As the case is being worked up by the trainee, the hematopathologists and HO fellowship program director discuss the findings, the appropriate work-up tools, and the implications on management. All of our six HO fellows attended the sessions, and a survey from the trainees showed high ease of use of the system and they viewed it as a very useful educational tool. A pre-test and post-test were administered for one of the sessions, and the result showed improvement in the average from 62 to 73%. Expanding the use of this online interactive tutorial and incorporating additional cases would enhance its value as a learning resource.

Assessment of potential predictors affecting preoperative anxiety in Indian children- A prospective observational study.

Background and Aims: Preoperative anxiety is a common problem among children undergoing surgery. The aim of the study was to assess the incidence and identify various predictors of preoperative anxiety in Indian children. Material and Methods: A prospective, observational study was conducted on 60 children of the American Society of Anesthesiologists Physical status 1/2, aged 2-6 years and scheduled for elective surgery under general anesthesia in a tertiary care teaching hospital. Preoperative parental anxiety was assessed using the State-Trait Anxiety Inventory questionnaire. The children's anxiety was assessed in the preoperative room, at the time of parental separation, and at the induction of anesthesia using modified Yale Preoperative Anxiety Scale (mYPAS) scoring by an anesthesiologist and a psychologist. Sedative premedication was employed prior to parental separation. Logistic regression analysis was carried out to identify the possible predictors of anxiety. Results: The incidence of high preoperative anxiety among the studied children was 76% in the preoperative room, 93% during parental separation, and 96% during anesthetic induction. Among the nine possible predictors identified on univariate regression, the presence of siblings was found to be a significant independent predictor on multivariate regression analysis (P = 0.04). The inter-rater agreement was excellent for the assessment of preoperative anxiety using mYPAS by the anesthesiologist and psychologist (weighted Kappa, k = 0.79). Conclusion: The incidence of preoperative anxiety in Indian children in the age group of 2-6 years is very high. The preop anxiety escalates progressively at parental separation and induction of anesthesia despite sedative premedication. The presence of siblings is a significant predictor of preoperative anxiety.

Quantitative assessment shows loss of antigenic epitopes as a function of pre-analytic variables.

Pre-analytic variables, specifically cold ischemic time, have been implicated as key variables in the measurement of proteins by immunohistochemistry. To determine the significance and magnitude of antigenic loss due to pre-analytic variables, we have compared protein antigenicity in core needle biopsies, with essentially no cold ischemic time, with that in routinely processed tumor resection specimens. Two cohorts of matched core needle biopsies and tumor resections were collected with 20 matched pairs and 14 matched pairs, respectively. Both series were analyzed by quantitative immunofluorescence using the AQUA® method. Epitopes phospho-ERK, total ERK, phospho-AKT, total AKT, phospho-S6K1, total S6K1, estrogen receptor (ER), Ki67, cytokeratin and GAPDH were assessed. Detection levels for all phospho-epitopes were significantly decreased in tumor resections compared with biopsies while no significant change was seen in the corresponding total proteins. Of the other four proteins examined, ER and cytokeratin showed significant loss of antigenicity. This data suggest that measurement of phospho-protein antigenicity in formalin-fixed tissue by immunological methods is dramatically affected by pre-analytic variables. This study suggests that core needle biopsies are more accurate for assessment of tissue biomarkers.