Hematoxylin–eosin staining showed the different sizes of muscle fiber, and lots of basophilic cavitation (arrow) contains amorphous materials in muscle fiber (A). (B) is normal. Acid phosphatase staining showed the increase of acid phosphatase activity, which caused the vacuolation turn ragged-red (arrow), and enzyme activity of the vacuoloid unchanged muscle fiber got a slight increase, which was stellate distributed (C). (D) is normal. (×400). Late-onset Pompe disease with complicated intracranial aneurysm: a Chinese case report. Zhang B, Zhao Y, Liu J, Li L, Shan J, Zhao D, Yan C - Neuropsychiatric disease and treatment (2016). Not Altered. CC.