xanthoma planum

例句：

1. 1.He developed a yellow tumor on his neck.
   他的脖子上长了一个黄色的肿瘤。
2. 2.The doctor diagnosed him with xanthoma planum.
   医生诊断他患有黄色瘤病。
3. 3.Xanthoma planum is a rare skin condition that can lead to serious health problems.
   黄色瘤病是一种罕见的皮肤病，可能导致严重的健康问题。