Table 2.
Clinical characteristics of analytical cases of retinoblastoma from the Population-Based Cancer Registry, 2000–2018, National Cancer Institute, Ministry of Health, Brazil.
| Features | n = 675 | % |
|---|---|---|
| Laterality | ||
| Right | 15 | 34.09 |
| Left | 17 | 38.64 |
| Bilateral | 12 | 27.27 |
| No information | 631 | |
| Morphology | ||
| Retinoblastoma, NOS | 624 | 92.44 |
| Diffuse Retinoblastoma | 1 | 0.15 |
| Differentiated Retinoblastoma | 35 | 5.19 |
| Undifferentiated Retinoblastoma | 10 | 1.48 |
| Malignant neoplasm | 4 | 0.59 |
| Malignant giant cell tumor | 1 | 0.15 |
| Diagnostic method | ||
| Cytology | 1 | 0.15% |
| Clinical | 10 | 1.50% |
| Histology of the primary tumor | 608 | 91.57% |
| Histology of metastasis | 1 | 0.15% |
| Tumor markers | 1 | 0.15% |
| Research | 39 | 5.87% |
| Only the death certificate | 4 | 0.60% |
| No information | 11 | |
NOS, no other specifications.