圆柱瘤

例句：

1. 1. The patient had a cylindrical tumor on his head.
   病人头上有个圆柱形的瘤。
2. 2. The doctor removed the cylindrical tumor from the patient's neck.
   医生从病人的脖子上取出了圆柱形的瘤。
3. 3. Cylindrical tumors are often found in the brain.
   圆柱形的瘤通常出现在大脑中。