1. Megalocephalia is a rare condition characterized by an abnormally large head at birth.
大头病是一种罕见的疾病，特点是出生时头部异常大。
2. The doctor diagnosed the baby with megalocephalia and recommended further medical evaluations.
医生诊断出这个婴儿患有大头病，并建议进行进一步的医学评估。