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Frequency of synchronous (concurrent) versus asynchronous (metachronous) pineoblastoma.
| Pineoblastoma with retinoblastoma diagnosed at | Synchronous (≤3 months) | Asynchronous (>3 months) | Total | p‐value* |
|---|---|---|---|---|
| <6 months | 5 (7%) | 65 (93%) | 70 | 0.0002 |
| ≥6 months | 22 (33%) | 44 (67%) | 66 | |
| <12 months | 12 (11%) | 95 (89%) | 107 | <0.0001 |
| ≥12 months | 15 (52%) | 14 (48%) | 29 | |
| Total | 27 (20%) | 109 (80%) | 136 |
Dx = diagnosis, Rb = retinoblastoma.
Fisher’s exact test (2‐sided).
