This disease should be differentiated from variation of the large cisterna magna, arachnoid cyst of the posterior forssa, cystic neoplasm, and severe hypoplasia of the cerebellum.

• 本病需与后颅窝蛛网膜囊肿、囊性新生物和变异的巨大枕大池以及重度小脑发育不全鉴别.