Case presentation A 5-year-old right-handed boy presented with sudden emesis and an inability to walk without assistance. Basic metabolic and hematologic laboratory profiles were performed at the emergency room and found to be normal. An abdominal ultrasound was also normal. He was diagnosed with viral gastroenteritis and dehydration. He continued to vomit frequently. Later that morning, a pediatrician evaluated him and noted a wide-based, ataxic gait.
A head CT was obtained, which revealed a posterior fossa mass. He was immediately transferred to the hospital for neurosurgical evaluation. Past medical history He was delivered after an uncomplicated pregnancy and delivery. At two years of age, he suffered a minor head injury without loss of consciousness and required scalp sutures. His immunizations are up-to-date. Physical examination Vital signs: Temperature: 37.7°C; blood pressure:…
