Cohort Demographics
The clinical and pathological features of the cohort consisting of 60 patients of neuroblastoma are previously published.15 Our cohort had older age, slight male preponderance, and a higher stage at presentation. The most common subtype was poorly differentiated neuroblastoma (55%, 33/60) followed by undifferentiated neuroblastoma (42%, 25/60) and ganglioneuroblastoma (3%, 2/60). There was no case of differentiating neuroblastoma in this cohort. MKI could not be evaluated on smears in 10 cases due to poor smear quality, low cellularity and/or crushing artifact. In the remaining 50 cases, MKI was high in 39, intermediate in 4, and low in 7 cases. Prognostic evaluation by age combined with cytomorphological type and MKI was applied, and as per INPC, the majority had unfavorable cyto-histology (n=52, 87%) compared to favorable cyto-histology (n=8,13)