A case report of lobular intradural extramedullary capillary hemangioma in a 14-year-old patient: resection and reconstruction.

Background: Intradural, extramedullary capillary hemangiomas of the cauda equina are exceedingly rare malformations arising from the endothelial cells of the nervous system vasculature. Roughly 20 cases have been reported in the literature, with the youngest and only pediatric case being in a 17-year-old patient. We report the youngest case of intradural extramedullary capillary hemangioma of the cauda equina in a 14-year-old patient. Case Description: A 14-year-old female presented with two-month history of low back pain with bilateral leg pain and numbness. Magnetic resonance imaging (MRI) revealed an L2 well-defined homogenous contrast-enhancing intradural, extramedullary mass causing severe spinal canal stenosis. Patient underwent laminoplasty for resection of an intradural tumor. Intraoperative hemostasis was readily achieved via early identification and coagulation of the predominate feeding vessel. Postoperatively, the patient awoke with no deficits and resolved leg pain. A 3-month postoperative MRI revealed no tumor recurrence and fully healed lamina. Conclusions: Given the benign nature, the operative goal is complete excision of the tumor without damage to surrounding neural structures. Postoperatively the goal is relief of pain and improvement in neurologic function. To our knowledge we report the first case in which laminoplasty is utilized for the treatment of this pathology in a pediatric patient. Evidence for laminoplasty in this patient population is sparse and future studies are still needed. In any case, reconstruction of the surgical site in a manner that returns the patient's normal anatomy should be strongly considered especially in younger patients.

A primary care guide to bipolar depression treatment.

Manage uncomplicated cases following guidelines on medical therapy and with adjunctive psychotherapy. Refer complicated and severe cases to Psychiatry.

Putting Action into Population Health Science: Primary Care Interventions to Address Social Determinants of Health.

Concern about health equity and social determinants of illness (e.g., income inequalities, lack of education, food insecurity) figure prominently in many conceptions of population health. In order to illustrate how population health can actively translate science into action, we consider primary care interventions that promote healthy populations by addressing the social determinants of health. In the examples provided in this article, primary care and population health are linked in a way that reinforces each other, and these innovative interventions may lead to improved health outcomes. Population health science provides a variety of methods and approaches for designing and evaluating interventions that aim to link patients with community resources that can address social determinants of health and improve the quality of their lives. Population health can serve as an important bridge between primary care and the public health sector. Population health science has been defined as "the study of the conditions that shape distributions of health within and across populations, and of the mechanisms through which these conditions manifest as the health of individuals" (Keys, K.M. 2016). According to this perspective, population health science elucidates the mechanisms that produce disease and the discipline of public health then applies that information to promote health in populations. Put another way, population health can be seen as the basic science of public health (Galea, S., et al. 2018). Other conceptions of population health have a direct concern with the translation of science into actions, and view science and action as linked and reinforcing each other (Kindig, D., et al. 2003; Diez Roux, A.V, 2016). For example, Kindig & Stoddart (2003) differentiated population health from public health, health promotion, and social epidemiology and argued that "the field of population health includes health outcomes, patterns of health determinants, and policies and interventions that link these two." The thesis of this commentary is that population health science goes beyond studying the mechanisms that shape distributions within and across populations to include actions that promote health of the entire human population. In support of this thesis, examples are provided from the literature on interventions in primary care that promote healthy populations by addressing the social determinants of health.

Student Race and Gender and Patient Encounters in a Family Medicine Clerkship.

BACKGROUND AND OBJECTIVES: The purpose of this study was to determine the association of students' race and gender with the race, gender, age, patient numbers, and problems encountered during a third-year family medicine clerkship across a geographically distributed clinical teaching network. METHODS: Student patient experience logbook data from two separate but adjacent 3-year periods were analyzed. Mixed-effects regression models and generalized linear mixed models were used to determine the relationship between student race and gender on number and demographics of patients encountered and odds of encountering required conditions and gender-specific conditions at least once during the clerkship. RESULTS: A total of 458 students documented 66,752 encounters during academic years 2008 through 2010, and 498 students documented 70,213 encounters during academic years 2011 through 2013. The first cohort averaged 145.8 (SD 24.0) encounters per student and the second cohort averaged 141.1 (SD 19.5) encounters per student. Females had more encounters during the first period, but no difference in the second. There was no difference in average encounters between white and nonwhite students during the first period, but during the second, nonwhite students had more encounters. A few differences were found in odds of encountering required conditions or gender-specific conditions, but none were consistent across time. CONCLUSIONS: Family medicine clerkship students in this geographically distributed network did not experience significant differences in patient demographics, conditions, or gender-specific diseases, based on their gender or race. The teaching sites in the study were monitored continuously to ensure consistent clinical experiences in volume and scope.

Patient-Centered Medical Home Status and Preparedness to Assess Resident Milestones: A CERA Study.

PURPOSE: The patient-centered medical home (PCMH) model has been proposed as the ideal model for delivering primary care and is focused on improving patient safety and quality, reducing costs, and enhancing patient satisfaction. The mandated Accreditation Council for Graduate Medical Education educational milestones for evaluation of resident competency represent the skills graduates will utilize after graduation. Many of these skills are reflected in the PCMH model. We sought to determine if residency programs whose main family medicine (FM) practice sites have achieved PCMH recognition are therefore more prepared to evaluate milestones. METHOD: A national Council of Academic Family Medicine Educational Research Alliance (CERA) survey of family medicine program directors (PDs) was conducted during June and July 2015 to determine if PCMH recognition influences PDs' ability to evaluate training methods and their level of preparedness to evaluate milestones. RESULTS: The response rate for the survey was 53.3% (252/473). Nearly two-thirds of the PDs (62.7%) reported that their main FM practice site had earned PCMH recognition. There was no statistical difference between non-PCMH-recognized vs PCMH-recognized programs in how PDs perceived that their program was prepared to assess residents' milestone levels overall (P=0.414). Residents of PCMH-recognized programs were more likely to receive training for team-based care (P=0.009), system improvement plans (P<0.001), root-cause analysis (P=0.002), and health behavior change (P=0.003). CONCLUSIONS: PCMH recognition itself did not improve preparedness of FM residency programs to assess milestones. Residents from programs whose main FM practice site is PCMH-recognized are more likely to be trained in the key concepts and tasks associated with the PCMH model, tools that they are expected to utilize extensively after graduation.

Comparing Lumbar Disc Space Preparation With Fluoroscopy Versus Cone Beam-Computed Tomography and Navigation: A Cadaveric Study.

STUDY DESIGN: Cadaveric study. OBJECTIVE: This cadaveric study sought to evaluate the efficacy of disc space preparation with cone beam-computed tomography with navigation (CBCT+N) for instrument placement compared with instrument placement with conventional fluoroscopy. SUMMARY OF BACKGROUND DATA: Disc space preparation from a transforaminal lumbar approach is challenging with respect to visualization, and surgeons currently rely on tactile feel and two-dimensional imaging in the operating room to assess instrument positioning. METHODS: Two orthopedic spine surgeons performed 40 disc space preparations after eight cadavers were randomly assigned to fluoroscopy versus CBCT+N. Digital images of each vertebral endplate were captured and the percent disc removed by area for the total disc and by quadrants was determined using digital imaging software. RESULTS: There were 20 lumbar disc levels prepared in the fluoroscopy group. There were 3 thoracolumbar, and 17 lumbar disc levels prepared in the experimental group. Percent disc removed relative to the total area of the disc, as determined by the digital imaging software, was higher in the CBCT+N group (P ≤ 0.0001). More disc was removed in both the anterior contralateral and posterior contralateral quadrants in the CBCT+N group (P = 0.0006 and P ≤ 0.0001 respectively). The intraclass correlation coefficient among blinded reviewers for percent disc removed was 0.759 (95% confidence interval, 0.587-0.866)]. There was no difference in time to complete disc space preparation, number of instrument passes, or number of endplate violations between the two groups (P = 0.28, P = 0.92, and P = 0.34 respectively). CONCLUSION: The results of this cadaveric investigation reveal that CBCT+N guidance may be used to assess instrument placement for interbody disc space preparation in a similar length of time, with no difference in instrument passes or endplate violations, in comparison with fluoroscopy. LEVEL OF EVIDENCE: 5.

Intracranial neurenteric cyst mimicking an ependymoma: imaging features, pathologic correlation and review of literature.

We present a case of a 57-year-old female with four-months of diplopia and vertigo. MRI revealed a mixed cystic and solid partially enhancing lesion of the 4th ventricle, foramen of Luschka and cerebellopontine angle. Preoperative differential diagnosis favored ependymoma. Biopsy revealed a neurenteric cyst, a benign developmental lesion that rarely occurs intracranially. This case highlights several atypical manifestations of intracranial neurenteric cyst, with regions of histologically benign solid enhancement, multicompartmental extra-axial location mimicking an ependymoma, and rapid recurrence without evidence of underlying malignancy.

Biomechanics of Posterior Dynamic Fusion Systems in the Lumbar Spine: Implications for Stabilization With Improved Arthrodesis.

STUDY DESIGN: A comparative biomechanical human cadaveric spine study of a dynamic fusion rod and a traditional titanium rod. OBJECTIVE: The purpose of this study was to measure and compare the biomechanical metrics associated with a dynamic fusion device, Isobar TTL Evolution, and a rigid rod. SUMMARY OF BACKGROUND DATA: Dynamic fusion rods may enhance arthrodesis compared with a rigid rod. Wolff's law implies that bone remodeling and growth may be enhanced through anterior column loading (AL). This is important for dynamic fusion rods because their purpose is to increase AL. METHODS: Six fresh-frozen lumbar cadaveric specimens were used. Each untreated specimen (Intact) underwent biomechanical testing. Next, each specimen had a unilateral transforaminal lumbar interbody fusion performed at L3-L4 using a cage with an integrated load cell. Pedicle screws were also placed at this time. Subsequently, the Isobar was implanted and tested, and finally, a rigid rod replaced the Isobar in the same pedicle screw arrangement. RESULTS: In terms of range of motion, the Isobar performed comparably to the rigid rod and there was no statistical difference found between Isobar and rigid rod. There was a significant difference between the intact and rigid rod and also between intact and Isobar conditions in flexion extension. For interpedicular displacement, there was a significant increase in flexion extension (P=0.017) for the Isobar compared with the rigid rod. Isobar showed increased AL under axial compression compared with the rigid rod (P=0.024). CONCLUSIONS: Isobar provided comparable stabilization to a rigid rod when using range of motion as the metric, however, AL was increased because of the greater interpedicular displacement of dynamic rod compared with a rigid rod. By increasing interpedicular displacement and AL, it potentially brings clinical benefit to procedures relying on arthrodesis.

Parkinson's disease: an inquiry into the etiology and treatment.

Parkinson's disease affects over one million people in the United States. Although there have been remarkable advances in uncovering the pathogenesis of this disabling disorder, the etiology is speculative. Medical treatment and operative procedures provide symptomatic relief only. Compression of the cerebral peduncle of the midbrain by the posterior cerebral artery in a patient with Parkinson's Disease (Parkinson's Disease) was noted on magnetic resonance imaging (MRI) scan and at operation in a patient with trigeminal neuralgia. Following the vascular decompression of the trigeminal nerve, the midbrain was decompressed by mobilizing and repositioning the posterior cerebral artery The patient's Parkinson's signs disappeared over a 48-hour period. They returned 18 months later with contralateral peduncle compression. A blinded evaluation of MRI scans of Parkinson's patients and controls was performed. MRI scans in 20 Parkinson's patients and 20 age and sex matched controls were evaluated in blinded fashion looking for the presence and degree of arterial compression of the cerebral peduncle. The MRI study showed that 73.7 percent of Parkinson's Disease patients had visible arterial compression of the cerebral peduncle. This was seen in only 10 percent of control patients (two patients, one of whom subsequently developed Parkinson's Disease); thus 5 percent. Vascular compression of the cerebral peduncle by the posterior cerebral artery may be associated with Parkinson's Disease in some patients. Microva-scular decompression of that artery away from the peduncle may be considered for treatment of Parkinson's Disease in some patients.

Clinical resources to teach components of a new Family Medicine Clerkship Curriculum.

BACKGROUND AND OBJECTIVES: This retrospective study was designed to determine the capacity of a 6-week distributed Family Medicine Clerkship to provide student documented patient encounters that could facilitate instructions on the acute illness and chronic disease components of the new Family Medicine Clerkship Curriculum (FMCC). The FMCC was developed to standardize core clinical education experiences in Family Medicine Clerkships in US medical schools. METHODS: Three years (FY06--FY08) of patient encounters documented by students and compiled in a Family Medicine Clerkship patient encounter database at the Medical College of Georgia were examined to determine the presence of patient experiences consistent with the acute illness and chronic disease presentations objectives of the new FMCC. The study cohort consisted of 537 students encountering 78,770 patients in 21 learning sites. RESULTS: Fifty-five percent of the FMCC acute illness presentations objectives (n=20) were encountered at least once by >90% of the students while 81% of the chronic disease presentations objectives (n=16) were encountered at least once by >90% of the students. All students encountered patients with multiple chronic diseases, with an average of 32.29 and 13.6 student patient encounters containing two and three chronic diseases respectively. Patient volumes for the FMCC acute illness and chronic disease objectives ranged from means of 0.37 to 10.37 and 2.24 to 57.47 per student respectively. CONCLUSIONS: The study suggests that a 6-week Family Medicine Clerkship could provide patient experiences to facilitate student instructions on most of the acute illness and chronic disease presentations objectives of the new FMCC.

Chronic subdural hematoma in the elderly: not a benign disease.

OBJECT: Chronic subdural hematoma (CSDH) is perceived to be a "benign," easily treated condition in the elderly, but reported follow-up periods are brief, usually limited to acute hospitalization. METHODS: The authors conducted a retrospective review of data obtained in a prospectively identified consecutive series of adult patients admitted to their institution between September 2000 and February 2008 and in whom there was a CT diagnosis of CSDH. Survival data were compared to life-table data. RESULTS: Of the 209 cases analyzed, 63% were men and the mean age was 80.6 years (range 65-96 years). Primary surgical interventions performed were bur holes in 21 patients, twist-drill closed-system drainage in 44, and craniotomies in 72. An additional 72 patients were simply observed. Reoperations were recorded in 5 patients-4 who had previously undergone twist-drill drainage and 1 who had previously undergone a bur hole procedure (p = 0.41, chi-square analysis). Thirty-five patients (16.7%) died in hospital, 130 were discharged to rehabilitation or a skilled care facility, and 44 returned home. The follow-up period extended to a maximum of 8.3 years (median 1.45 years). Six-month and 1-year mortality rates were 26.3% and 32%, respectively. In the multivariate analysis (step-wise logistic regression), the sole factor that predicted in-hospital death was neurological status on admission (OR 2.1, p = 0.02, for each step). Following discharge, the median survival in the remaining cohort was 4.4 years. In the Cox proportional hazards model, only age (hazard ratio [HR] 1.06/year, p = 0.02) and discharge to home (HR 0.24, p = 0.01) were related to survival, whereas the type of intervention, whether surgery was performed, size of subdural hematoma, amount of shift, bilateral subdural hematomas, and anticoagulant agent use did not affect the long- or short-term mortality rate. Comparison of postdischarge survival and anticipated actuarial survival demonstrated a markedly increased mortality rate in the CSDH group (median survival 4.4 vs 6 years, respectively; HR 1.94, p = 0.0002, log-rank test). This excess mortality rate was also observed at 6 months postdischarge with evidence of normalization only at 1 year. CONCLUSIONS: In this first report of the long-term outcome of elderly patients with CSDH the authors observed persistent excess mortality up to 1 year beyond diagnosis. This belies the notion that CSDH is a benign disease and indicates it is a marker of other underlying chronic diseases similar to hip fracture.

Evaluating perceptions of community-based physicians from a high-retention clerkship.

OBJECTIVE: This study's objective was to ascertain factors contributing to high retention of community-based sites and their physicians in a 3-decade-old family medicine clerkship. METHODS: Focus groups were conducted with community-based physicians from the Medical College of Georgia's family medicine clerkship. Transcripts were analyzed using an iterative process regarding physicians' initial and ongoing motivations for participating in the clerkship. RESULTS: Thirteen physicians participated. Six themes were generated: family medicine promotion, valued role of teaching, leadership style, clerkship ownership, resources, and challenges. CONCLUSIONS: In addition to intrinsic motivators such as valuing the role of teaching the next generation of physicians and promoting the family medicine specialty, the participative leadership style of a clerkship may be an important factor in physicians' decision to teach in a clerkship. The physicians in this study described having collegial working relationships with the clerkship leaders and receiving consistent support in implementing objectives. Physicians attributed their high level of involvement and investment as a product of being respected partners in defining the clerkship. Financial support and teaching resources were also considered salient. A follow-up study with a larger population is warranted to support the importance of leadership style and other external motivating factors toward a clerkship's physician retention.