Abstract：Objective To explore the CT and MRI manifestations of pediatric pleomorphic xanthoastrocytomas, and to analyze the radiological features.Methods The clinical and radiological data of pediatric pleomorphic xanthoastrocytomas diagnosed histologically between July 2009 and December 2018 was analyzed retrospectively. After being reviewed by the inclusion and exclusion standards, a total of 12 patients were admitted. All the patients were given CT and MRI examination preoperatively and postoperatively.Results Among the 12 patients, half of the tumors were located in the temporal lobe. Seizure was the most common symptom, which occurred in 7 patients. Radiologically, the tumor was completely solid in one case, mainly solid in 4 cases, solid-cystic in 3 cases, and cystic with mural nodules in 4 cases. The solid parts of the tumors all had contrast enhancement. The cystic walls of the mural nodules were also enhanced. Edema and calcification could be seen in 9 and 5 patients, respectively. After operation, tumors were totally removed in 10 patients. Six patients were diagnosed as WHO Ⅱ pleomorphic xanthoastrocytomas.Conclusions Pediatric pleomorphic xanthoastrocytomas are mainly located in the cerebral hemisphere superficially, mostly in the temporal lobe. Seizures are the most common symptom. The tumors are usually associated with different degrees of cystic change. The solid parts of all the tumors and the cystic walls of mural nodules can be enhanced obviously. Peritumoral edema and calcification are not uncommon. Pleomorphic xanthoastrocytomas should also be distinguished from other supratentorial tumors.
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