A 2-month-old male presents with progressive head circumference enlargement, persistent vomiting, and irritability. Vital signs show HR 145 bpm, RR 38/min, BP 92/58 mmHg, temperature 37.2°C. Head circumference increased 2 cm in 2 weeks. Fontanelle is tense and bulging. MRI demonstrates cystic dilation of the fourth ventricle, cerebellar vermis hypoplasia, and enlarged posterior fossa. No seizures have occurred. Which diagnosis best explains these findings?
- A)Chiari I malformation
- B)Dandy-Walker malformationGABARITO
- C)Chiari II malformation
- D)Holoprosencephaly
- E)Syringomyelia
Explicação
Dandy-Walker malformation is the correct answer because it is characterized by hypoplasia of the cerebellar vermis, cystic dilation of the fourth ventricle, and enlargement of the posterior fossa, often causing hydrocephalus in infancy. Ver explicação completa e trilha adaptativa →