polycoelia

例句：

1. 1. The patient had a rare condition called polycoelia.
   这位病人患有一种罕见的疾病，叫做多指头病。
2. 2.Polycoelia is a genetic disorder that affects the development of fingers and toes.
   多指头病是一种遗传性疾病，影响手指和脚趾的发展。
3. 3. In some cases, polycoelia can cause pain and discomfort in the affected areas.
   在某些情况下，多指头病可能导致受影响区域的疼痛和不适。