1. Neuroblastoma, Subtype    a) Undifferentiated    b) Poorly differentiated    c) Differentiating 2. Ganglioneuroblastoma    a) Intermixed    b) Nodular 3. Ganglioneuroma, Subtype    a) Maturing    b) Mature

The neuroblastoma category in the INPC was revised to two subtypes of conventional classification to three subtype’s classification. Gangilioneuroblastoma are divided three to two subtypes. Ganglioneuroma was classified to two subsets. Table 2: The International neuroblastoma pathology classification (INPC).