Aydemir, FatihKardes, OzgurKayaselcuk, FaziletTufan, Kadir2019-06-212019-06-2120162005-3711https://www.jkns.or.kr/journal/view.php?doi=10.3340/jkns.2016.59.5.533http://hdl.handle.net/11727/3663Pilocytic astrocytomas (PAs) are World Heath Organization Grade I tumors and are most common in children. PA calcification is not a common finding and has been reported more frequently in the optic nerve, hypothalamic/thalamus and superficially located cerebral tumors. We present a cerebellar PA in a 3-year-old male patient with cystic components and massive calcification areas. The residual tumor grew rapidly after the first operation, and the patient was operated on again. A histopathological examination revealed polar spongioblastoma-like cells. Massive calcification is not a common feature in PAs and can lead to difficulties in radiological and pathological differential diagnoses.enginfo:eu-repo/semantics/openAccessCalcificationPilocytic astrocytomaPolar spongioblastomaarticle5955335360003849331000192-s2.0-84989191987