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| Code | Diagnosis | Comment | Score |
| anonymous | Embryonal rhabdomyosarcoma (100%) | Immunostains for myogenin, MyoD1, desmin, actin for confirmation. | 100 |
| anonymous | Malignant small round cell tumor (100%). Morphologic appearances most compatible with embryonal rhabdomyosarcoma. | Confirmation with immunostains (+ve myogenic markers - desmin, myogenin). The panel should include other stains including CD99, a cytokeratin and S-100 protein. | 100 |
| anonymous | Malignant small round cell tumor, 100%, favor embryonal rhabdomyosarcoma. To confirm by positive immunostaining for desmin, actin and myogenin. | Differential diagnoses: Ewing's sarcoma/ PNET (PAS positive, myoid markers negative); lymphoma (LCA positive) | 100 |
| anonymous | EMBRYONAL RHABDOMYOSARCOMA. 100% | Skeletal muscle differentiation to be confirmed by actin, desmin, Myo-D1 etc. | 100 |
| anonymous | Embryonal rhabdomyosarcoma. (100%) | Do myogenin stain to confirm. | 100 |
| anonymous | Lacrimal gland - small round cell tumour DDX:1) embryonal rhabdomyosarcoma 90% 2)Ewing sarcoma/PNET | Need ancillary tests (immunohistochemistry and/or EM) to reach definitive diagnosis | 100 |
| anonymous | High grade malignant small round cell tumour, with differential diagnosis of 1. Rhabdomyosarcoma (90%) 2. Ewing sarcoma (10%) | A panel of immunostains should be performed. Desmin, myogenin and MyoD1 will be positive in rhabdomyosarcoma, CD99 will be positive in Ewing sarcoma. | 100 |
| anonymous | Malignant small round cell tumour 100% | DDX includes rhabdomyosarcoma, malignant lymphoma. Suggest immunohistochemical staining for desmin, myogenin, TdT, CD99 | 100 |
| anonymous | Small blue round cell tumor of childhood. By the age and location, Embryonal rhabdomyosarcoma. | Confirmed by IHC - SMA, Desmin, Calponin, Myogen, MyoD1, NSE, Synaptophysin, Chromogranin, CD99 to exclude other differential diagnosis. | 100 |
| anonymous | LACRIMAL GLAND mass - MALIGNANT NEOPLASM, mesenchymal. (100%) | Differential diagnosis includes mesenchymal chondrosarcoma, rhabdomyosarcoma, PNET/Ewing's sarcoma, hemangiopericytoma and synovial sarcoma. Immunohistochemical stains need to be performed. | 90 |
| anonymous | Malignant small round blue cell tumour 100% | DDx soft tissue leukaemic deposit, embryonal rhabdomyosarcoma, PNET, lymphoma Perform immunostains: -CD99 -desmin, actin, MyoD1 (rhabdomyosarcoma) -CD45, MPO (leukaemia, lymphoma) -cytokeratin (rhabdoid tumour) -synaptophysin (PNET) | 100 |
| anonymous | Small round cell malignancy, favor embryonal rhabdomyosarcoma | To perform immunostaining, including actin, desmin, myogenin etc for definitive diagnosis | 100 |
| anonymous | Embryonal sarcoma | Exclude striated muscle differentiation (embryonal rhabdomyosarcoma) with desmin and muscle specific actin stains. | 90 |
| anonymous | Primitive small round cell tumour of children, favour embryonal rhabdomyosarcoma. Probability: 100% | nil | 100 |
| anonymous | Primitive small round cell tumour of children, favour embryonal rhabdomyosarcoma | nil | 100 |
| anonymous | Embryonal rhabdomyosarcoma 100% | Confirm by immunostains for actin, desmin and MyoD1 | 100 |
| anonymous | Small round cell tumor, differential diagnosis include embryonal rhabdomyosarcoma (80%) and other SRCTs (20%, eg. Ewing/PNET, myeloid sarcoma, neuroblastoma, melanoma, myoepithelioma, synovial sarcoma etc) | Immunohistochemical stains for myogenin, cytokeratin, desmin, neural markers, S100 proteins, CD99, MPO, LCA, HMB45, calponin would help diagnosis. Cytogenetics for characteristic translocations are also helpful. | 100 |