Table 3.
Histological types of primary malignant brain tumors in 432 cases of orchard workers and non-pesticide cases
| Histological type | No. of orchard workers | No. of nonpesticide cases |
|---|---|---|
| Glioblastoma multiforme* | 96 | 5 |
| Anaplastic astrocytomas (WHO grade III) | 67 | 4 |
| Astrocytoma (WHO grade II) | 38 | 15 |
| Anaplastic oligodendroglioma (WHO grade III) | 28 | 2 |
| Oligodendroglioma (WHO grade II) | 30 | 11 |
| Anaplastic ependymoma (WHO grade III) | 21 | - |
| Ependymoma (WHO grade II) | 28 | 6 |
| Anaplastic oligo-astrocytoma (WHO grade III) | 7 | — |
| Mixed oligo-astrocytoma (WHO grade II) | 10 | — |
| Gliosarcoma | 11 | — |
| Gliomatosis cerebri | 6 | — |
| Choroid plexus papilloma | 19 | — |
| Ganglioglioma | 5 | — |
| Esthesio neuroblastoma | 2 | — |
| Pineocytoma | 3 | — |
| Medulloblastoma* | 15 | — |
| Retinoblastoma | 3 | — |
| Total | 389 | 43 |