A 23-year-old man complains of lower back pain that began approximately 6 months ago. He is unsure why he is experiencing this pain and notices that this pain is worse in the morning after waking up and improves with physical activity. Ibuprofen provides significant relief. He denies bowel and bladder incontinence or erectile dysfunction. Physical exam is notable for decreased chest expansion, decreased spinal range of motion, 5/5 strength in both lower extremities, 2+ patellar reflexes bilaterally, and an absence of saddle anesthesia. Which of the following is the most appropriate next test for this patient?
AHLA-B27
BSlit-lamp examination
CMRI sacroiliac joint
DRadiograph sacroiliac joint
EESR
A 36-year-old male is taken to the emergency room after jumping from a building. Bilateral fractures to the femur were stabilized at the scene by emergency medical technicians. The patient is lucid upon questioning and his vitals are stable. Pain only at his hips was elicited. Cervical exam was not performed. What is the best imaging study for this patient?
AAP and lateral radiographs of hips
BLateral radiograph (x-ray) of hips
CMagnetic resonance imaging (MRI) of hips, knees, lumbar, and cervical area
DAnterior-posterior (AP) and lateral radiographs of hips, knees, lumbar, and cervical area
EComputed tomography (CT) scan of cervical spine, hips, and lumbar area
During a thoracotomy procedure, a surgeon needs to access the posterior mediastinum. Which of the following structures forms the anterior boundary of the posterior mediastinum?
ADescending thoracic aorta
BPericardial sac
CAzygos vein
DThoracic vertebrae
ESternum
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