Persistent headache without neurologic deficit from a spontaneous vertebral artery dissection.

INTRODUCTION: Non-traumatic headache is a common complaint seen in the emergency department (ED), accounting for 2.3% of ED visits per year in the United States (Munoz-Ceron et al., 2019). When approaching the workup and management of headache, an emergency medicine physician is tasked with generating a deadly differential by means of a thorough history and physical exam to determine the next best steps. CASE: A 21-year-old male presented to the emergency department with a debilitating new-onset headache, preceded by an isolated vertiginous event 3 days prior. He was found to have a normal neurologic examination. A non-contrast CT scan of the head revealed a large hypodensity within the left cerebellum with a subsequent MRA of the brain and neck notable for a left vertebral artery dissection, complicated by an ischemic cerebellar stroke. DISCUSSION: With an estimated incidence of 1-5 per 100,000, vertebral artery dissection is a rare cause of stroke within the general population and carries with it a high degree of morbidity and mortality (Rodallec et al., 2008). Vertebral artery dissection is a result of blood penetrating the intimal wall of the artery to form an intramural hematoma. Diagnosis can be difficult in cases presenting subacutely but a thorough history evaluating for red flags and using simple but highly sensitive exams such as the bedside HINTS exam can increase pretest probability of stroke. Clinical syndromes, red flags, and time from onset of symptoms should guide imaging modalities such as CT, CTA, MRI, and MRA in detection of small ischemic changes, intimal flaps, and luminal thromboses. CONCLUSION: Vertebral artery dissection should remain high on the differential for an emergency medicine physician when history is suggestive of a new onset headache, preceded by vertiginous symptoms. An absence of recent trauma and a normal neurologic examination does not eliminate the diagnosis.

Penile Dorsal Vein Rupture Identified by Emergency Department Ultrasound.

CASE PRESENTATION: We present the case of a young male with high clinical suspicion of a penile fracture found to have dorsal vein rupture by emergency department point-of-care ultrasound. This false form of penile fracture was subsequently confirmed intraoperatively. DISCUSSION: Penile fracture is a rare clinical entity that may be separated into true vs false penile fracture, with only true fracture requiring surgery. The images submitted here add to the sparse literature evidence that point-of-care ultrasound can be used to differentiate between these two clinical entities. Additionally, this case report highlights an opportunity for further research into and application of point-of-care ultrasound to the evaluation of suspected penile fractures.

The Rising Physicians Program: A Novel Approach for Mentoring Medical Students.

INTRODUCTION: The transition to medical school is a particularly challenging time for new students as they are faced with significant academic responsibilities. Moreover, for many students at the Uniformed Services University they are adjusting to being on active duty in the military. Mentoring has been considered a way to help with the transition and professional development. Prior to 2015, there was no formal mentoring program for new students at the Uniformed Services University. MATERIALS AND METHODS: In order to address the demands and challenges facing matriculating medical students, the Rising Physicians Program was created. This student initiated program enabled pre-clerkship medical students to connect with residents at the Walter Reed National Military Medical Center via a secure database with resident profiles. Residents were recruited and voluntarily agreed to serve as mentors. Students were then able to access the database and reach out to mentors based on their specific goals. The program was introduced to students during orientation and student participation was completely voluntary. A survey was designed using best survey practices and sent to the 175 students participating in the program for the 2015 academic (class of 2019) year to determine participation and characteristics of the program. RESULTS: Sixty-four percent (112/175) of the students from the class of 2019 participated in the post-implementation survey. Fifteen percent of the class (26/175) reported participating in the voluntary mentoring program. The three most commonly used communication methods with mentors in precedence were in-person, e-mail, and text messages. The majority of the students found their interactions in this program were beneficial and did not get in the way of their academic performance. The most common topics of discussion were academics (20%), mentor's past experience (22%), military lifestyle (7%), medical school pathways (23%), and specialty selections (23%). Limitations of the program included a lack of U.S. Air Force mentors and mentors within certain residency specialties. CONCLUSIONS: The Rising Physician Program provides a near-peer mentoring model for new medical students. Students preferred to communicate with their mentors in person, but the flexibility of communication appears to be important. New students have a variety of academic and professional development concerns that could partially be addressed through mentoring by residents.

Loss of Wdfy3 in mice alters cerebral cortical neurogenesis reflecting aspects of the autism pathology.

Autism spectrum disorders (ASDs) are complex and heterogeneous developmental disabilities affecting an ever-increasing number of children worldwide. The diverse manifestations and complex, largely genetic aetiology of ASDs pose a major challenge to the identification of unifying neuropathological features. Here we describe the neurodevelopmental defects in mice that carry deleterious alleles of the Wdfy3 gene, recently recognized as causative in ASDs. Loss of Wdfy3 leads to a regionally enlarged cerebral cortex resembling early brain overgrowth described in many children on the autism spectrum. In addition, affected mouse mutants display migration defects of cortical projection neurons, a recognized cause of epilepsy, which is significantly comorbid with autism. Our analysis of affected mouse mutants defines an important role for Wdfy3 in regulating neural progenitor divisions and neural migration in the developing brain. Furthermore, Wdfy3 is essential for cerebral expansion and functional organization while its loss-of-function results in pathological changes characteristic of ASDs.