Screening and early diagnosis has an important role in reducing the morbidity and mortality associated with breast cancer. Mammography has an established role and has been approved for routine screening. MRI is an emerging tool and has the highest sensitivity of current breast imaging techniques. Although low specificity and high cost of MRI restricted its use in routine screening, it has been increasingly used in the screening of high-risk individuals, diagnosing occult cases, staging and assessing the response to chemotherapy. MRI-guided techniques, including needle-localization biopsy and vacuum-assisted breast biopsy, have a special role in diagnosis and management. This article focuses on the role of MRI in diagnosis, screening and management of breast cancer, and reviews the current indications for breast MRI.

Objective: Pediatric extracorporeal membrane oxygenation typically necessitates protracted ventilator support, yet not much is known about the use of tracheostomy in the pediatric subpopulation. The study was designed with an objective to quantify the prevalence of tracheostomy in children with respiratory/cardiac failure requiring extracorporeal membrane oxygenation and to compare outcomes for patients undergoing early, late, and no tracheostomy. Methods: Data of patients <18 years of age who underwent extracorporeal membrane oxygenation for respiratory/cardiac failure between 2009 and 2015 were obtained from the Virtual Pediatric Systems (VPS, LLC) Database. Patients who underwent post-operative cardiac ECMO were excluded. Early versus late tracheostomy was defined as ⩽21 or >21 days after intensive care unit admission. Results: Data were analyzed for 2127 patients meeting inclusion and exclusion criteria. Five percent (107/2127) underwent a tracheostomy. Of these, 28% (30/107) underwent early and 72% (77/107) late tracheostomy. A higher mortality was found in the no tracheostomy group (41.3%) compared to early (13.3%) and late tracheostomy (14.3%) groups. Late tracheostomy was associated with 2.4 times the expected intensive care unit length of stay and 1.87 times the expected ventilator days as compared to patients with no tracheostomy. Early tracheostomy was associated with a shorter intensive care unit length of stay (p value < 0.001) and ventilator days (p value = 0.04) compared to late tracheostomy and no difference with the no tracheostomy group. Conclusions: Late tracheostomy (>21 days) is associated with worse outcomes in the cohort of children who underwent Pediatric extracorporeal membrane oxygenation compared to patients who did not undergo tracheostomy. Early tracheostomy is associated with shorter intensive care unit stay and ventilator duration when compared to late tracheostomy.

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BackgroundIn pediatric trauma patients, 60–80% of spinal cord injuries involve the cervical vertebrae. While the American College of Radiology offers guidelines for best imaging practices in the setting of acute pediatric trauma, there is a lack of uniformity in imaging-decision protocols across institutions. MRI has been shown to demonstrate high sensitivity for both bony and ligamentous injuries while also avoiding unnecessary radiation exposure in the pediatric patient population. However, the efficacy of flexion-extension (FE) radiography following initial MRI has not been evaluated in children. Our hypothesis is that FE radiography conducted following an initial MRI does not contribute significant diagnostic information or reduce time to cervical collar removal and thus can be removed from institutional protocols in order to avoid unnecessary testing and reduce pediatric radiation exposure.MethodsTrauma data were collected for pediatric patients presenting with suspected acute cervical spine injury from 2014 to 2021. A total of 108 patients were subdivided into 41 patients who received “MRI Only” and 67 patients who received both “MRI and FE” diagnostic cervical spine imaging. Chi-square testing and t-tests were performed to determine differences between MRI and FE radiographic detection rates of bony and ligamentous injuries in the subgroups.ResultsIn patients for whom FE did not find any injury, MRI detected bony and ligamentous injuries in 9/63 and 12/65 cases, respectively. In 3/21 (14.3%) cases in which MRI detected a bony and/or ligamentous injury and FE did not, patients eventually required surgical intervention for c-spine stabilization. No patients required surgical fixation when FE radiography showed an abnormality and MRI was normal. Addition of follow-up FE radiography after initial MRI did not have a significant effect on overall hospital length of stay (MRI Only vs MRI+FE: 9.2±12.0 days vs 8.6±13.5 days, p=0.816) or on rates of collar removal at discharge or greater than 48 hours after imaging (MRI Only vs MRI+FE: 41.5% vs 56.7%, p=0.124).ConclusionsFE radiography following initial MRI did not have a significant effect on reducing time to cervical collar removal or overall hospital length of stay. In addition, in 3 of 6 cases (50.0%) in which surgical fixation was required, MRI detected ligamentous and/or bony injury while FE radiography was normal.Level of EvidenceThis study contributes Level 2b scientific evidence consistent with a well-designed cohort or case-control analytic study.