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| Code | Diagnosis | Comment | Score |
| anonymous | Atypical teratoid/rhabdoid tumour (100%) | Immunohistochemically, tumour cells are positive for EMA, vimentin, SMA, sometimes express GFAP and neurofilament. Cytogenetic analysis will show monosomy or deletion of chromosome 22. | 100 |
| anonymous | AT/RT(Atypical teratoid/rhabdoid tumor) | nil | 100 |
| anonymous | Anaplastic ependymoma | Differential diagnosis: embryonal tumour including atypical teratoid rhabdoid tumour, supratentorial PNET and ependymoblastoma. Immunostains with GFAP, EMA and INI-1. | 80 |
| anonymous | Atypical Teratoid/rhabdoid tumor | Immunostaining for INI1 (loss of staining) Genomic study for INI1 gene delection | 100 |
| anonymous | EPENDYMOMA. 100% | CONFIRM BY GFAP positivity. The less likely differential is atypical teratoid/rhabdoid tumor which will show loss of nuclear staining for INI-1. | 80 |
| anonymous | Atypical teratoid/rhabdoid tumor. 100% | Do INI1 which will show loss of nuclear staining. | 100 |
| anonymous | DDx: Primitive neuroectodermal tumour (40%), Atypical teratoid rhabdoid tumour (40%), Malignant Ependymoma (20%) | Require ancillary studies (immunostaining, cytogenetics, molecular studies) for definitive tumour typing | 80 |
| anonymous | Malignant high grade tumour, favour anaplastic ependymoma (80%) with differential diagnosis include primitive neuroectodermal tumour (PNET) (20%) | nil | 50 |
| anonymous | atypical teratoid/rhabdoid tumour | nil | 100 |
| anonymous | Primary malignant tumor, differential diagnosis: (1) Anaplastic ependymoma; (2) Atypical teratoid/ rhabdoid tumor. | Immunohistochemistry: SMA, EMA, GFAP. | 80 |
| anonymous | Ependymoma | nil | 50 |
| anonymous | Anaplastic ependymoma (WHO grade 3) | nil | 50 |
| anonymous | Anaplastic ependymoma (90%), atypical teratoid/rhabdoid tumour (10%). | Immunostaining for GFAP, EMA will be helpful for tumour typing, and Ki67 to establish the proliferative index. | 80 |
| anonymous | Anaplastic ependymoma, DDX: Atyical teratoid/ Rhabdoid tumour, take more blocks for other component (100% Probability). | nil | 80 |
| anonymous | Malignant tumor (100%), differential diagnoses include atypical teratoid/rhabdoid tumor (50%) and primitive neuroectodermal tumor (50%). | Perform immunostains including vimentin, EMA, smooth muscle actin, GFAP, CD99, synaptophysin and INI1. There is loss of INI1 expression in atypical teratoid/rhabdoid tumor. | 90 |
| anonymous | Anaplastic ependymoma | nil | 50 |