“…For cystic tumors in the CPA, differential diagnoses include schwannoma, endodermal sinus tumor (neurenteric cyst), hemangioblastoma, cavernous malformation, meningioma, teratoma, epidermoid cyst, cysticercus, and ependymal cyst. [14][15][16][17][18][19][20][21][22][23][24] In the present case, MRI revealed a cystic tumor without any enhancement by the gadoliniumcontrast agent. Epidermoid cysts, endodermal sinus tumors, and ependymal cysts are typically nonenhanced lesions found on the CPA.…”