Table 1 Summary of clinicopathologic findings.
Case | Age/sex | Site/size (cm) | Morphology | Necrosis | Mitotic figures/10 HPF | Fusion | Outcome |
|---|---|---|---|---|---|---|---|
1 | 38/F | Sigmoid colon/3.5 | Fibrosarcomatous (95%); rhabdoid (5%) | Absent | 2 | MXD4 exon 5-NUTM1 exon 3 | Liver metastases; treated with chemotherapy; alive with disease at 15 months |
2 | 40/M | Ileocecal valve/2.5 | Fibrosarcomatous (50%); hyalinized/nested (40%); rhabdoid (10%) | Absent | 2 | MXD4 exon 5-NUTM1 exon 3 | Alive without disease at 5 months |
3 | 65/F | Cecum/3.5 | Rhabdoid (90%); hyalinized/nested (10%) | Absent | <1 | MXD4 exon 5-NUTM1 exon 2 | Liver and lymph node metastases; dead of disease at 30 months |
4 | 44/F | Descending colon/5 | Fibrosarcomatous (50%); rhabdoid (50%) | Geographic | 9 | MXD4 exon 5-NUTM1 exon 2 | Liver and lymph node metastases; alive with disease at 10 months |
5 | 67/F | Descending colon/20 | Fibrosarcomatous (50%); rhabdoid (50%) | Geographic | 14 | MXD4 exon 5-NUTM1 exon 3 | Liver, lymph nodes, and extensive abdominal metastasis at presentation; recent |
