international neuroblastoma pathology classification: unfavorable histology group, patient of any age, with ganglioneuroblastoma, nodular (composite schwannian stroma-rich/stroma-dominant and stroma-poor)
international neuroblastoma pathology classification: unfavorable histology group, patient 5 years or older, with any subtype of neuroblastoma (schwannian stroma-poor) and any mitosis-karyorrhexis index