Lung cancer screening: nodule identification and characterization.

The accurate identification and characterization of small pulmonary nodules at low-dose CT is an essential requirement for the implementation of effective lung cancer screening. Individual reader detection performance is influenced by nodule characteristics and technical CT parameters but can be improved by training, the application of CT techniques, and by computer-aided techniques. However, the evaluation of nodule detection in lung cancer screening trials differs from the assessment of individual readers as it incorporates multiple readers, their inter-observer variability, reporting thresholds, and reflects the program accuracy in identifying lung cancer. Understanding detection and interpretation errors in screening trials aids in the implementation of lung cancer screening in clinical practice. Indeed, as CT screening moves to ever lower radiation doses, radiologists must be cognisant of new technical challenges in nodule assessment. Screen detected lung cancers demonstrate distinct morphological features from incidentally or symptomatically detected lung cancers. Hence characterization of screen detected nodules requires an awareness of emerging concepts in early lung cancer appearances and their impact on radiological assessment and malignancy prediction models. Ultimately many nodules remain indeterminate, but further imaging evaluation can be appropriate with judicious utilization of contrast enhanced CT or MRI techniques or functional evaluation by PET-CT.

Development of a youth-report measure of DPN symptoms: Conceptualization and content validation.

AIMS: To develop a content valid youth-report measure of diabetic peripheral neuropathy (DPN) symptoms. METHODS: Semi-structured interviews with 5 clinicians and 15 youth aged 8-17 with diabetes were conducted to elicit and clarify youth's DPN experiences. A systematic review of existing adult-report DPN symptom measures was conducted to identify item concepts representative of each experience. The concepts were transformed into items that were iteratively revised based on cognitive interviews (n = 13 youth aged 8-17) and readability analyses. RESULTS: Clinician and youth interviews supported a tripartite conceptual framework of youth DPN symptoms: paresthesia, pain, and anesthesia. Forty-eight youth-report items were generated to represent DPN symptoms identified through the semi-structured interviews and a systematic review of 13 symptom questionnaires for adults. Of these, 23 were eliminated and 3 were revised based on cognitive interviews conducted with youth. The remaining 25 items were on average, written at a 3rd grade reading level. CONCLUSIONS: This study is the first to generate a content valid self-report measure of youth's lived experiences with DPN that uses developmentally appropriate terminology. With further psychometric testing, the measure could be used to advance research on pediatric DPN and enhance clinicians' capacity to identify the condition in childhood.

Continuous Glucose Monitoring in Pediatrics: The Gap between Potential Benefits and the Reality of Utility.

Continuous Glucose Monitoring (CGM) is rapidly becoming a standard of care in the management of Type 1 diabetes (T1D). Today's devices are nearly as accurate as home glucose meters. They provide glucose data every 5 minutes, alert to high and low blood glucose levels, and allow for remote monitoring of a user's glucose data and patterns. Use of CGM has many benefits including support for tighter glycemic control without increasing the risk for hypoglycemia. There is however emerging evidence of some negative aspects associated with using CGM, which may result in decreased utilization of the device as well as a decline in quality of life, especially in the pediatric population. This article explores some of the challenges to successful CGM use and offers guidelines for helping patients/families minimize the negative impact of these revolutionary devices.

The evaluation of peripheral neuropathy in youth with type 1 diabetes.

Of 151 youth with type 1 diabetes who were screened for peripheral neuropathy, and received nerve conduction studies, 11% were diagnosed with Diabetic Peripheral Neuropathy (DPN). DPN can occur in young children, with short diabetes duration, and good diabetes control. National guidelines for screening children for DPN should be developed.

Glucose-6-phosphate dehydrogenase deficiency diagnosed in an adolescent with type 1 diabetes mellitus and hemoglobin A1c discordant with blood glucose measurements.

Disorders of hemolysis reduce the exposure time of hemoglobin to glucose, resulting in a falsely low hemoglobin A1c level. This case report describes the unexpected diagnosis of glucose-6-phosphate dehydrogenase deficiency made during evaluation of discordant HbA1c and blood glucose measurements.

Education and telephone case management for children with type 1 diabetes: a randomized controlled trial.

The purpose of the study was to compare three nursing interventions and their impact on glycemic control among children with type I diabetes. The 75 subjects' mean +/- SD age was 12.5 +/- 3.4 years, 55% were boys, and 55% were White. Subjects were randomly assigned to a standard care (SC), an education (ED), or an education and telephone case management (ED + TCM) group. The primary outcome measure was glycemic control (hemoglobin A1c, or HbA1c). Secondary outcome measures were diabetes knowledge (KNOW), parent-child teamwork (TEAM), and adherence (ADH). After 6 months of follow-up, results demonstrated no significant differences among groups in HbA1c. KNOW and TEAM scores improved slightly in the ED and ED + TCM groups, but no statistically significant differences were found among the three groups. Significant improvement in ADH scores among ED + TCM groups was reported when compared with the ED and SC groups. This change may represent a move toward improved adherence to diabetes care and subsequent improvement in diabetes control. The challenges of recruitment and retention of subjects in this study will also be discussed.