Table 1 Surgical outcome related to sex and age in infra-tentorial brain tumor subtypes
S. no. | Histopathological type/site | No. of patients | Males | Females | Children(18 years and below) | Postop. clinico-radiological status | ||
|---|---|---|---|---|---|---|---|---|
Residual lesion/dis. Prog. | Recurrence | Mortality | ||||||
1. | Schwannomas | 102 | 63 | 39 | 03 | 25/06 | 12 | 04 |
i). Vestibular (CP angle) | 98 | 60 | 38 | 03 | 23/05 | 11 | 04 | |
ii). Trigeminal | 04 | 03 | 01 | – | 02/01 | 01 | – | |
2. | Meningiomas: | 38* | 16 | 22 | 01 | 10/03 | 05 | 03 |
i). Cerebellar cortex and tent. | 16 | 05 | 11 | 01 | – | – | – | |
ii). Cerebello-pontine angle | 12 | 05 | 07 | – | 05 | – | – | |
iii). Foramen magnum | 07 | 03 | 04 | – | 04/02 | 04 | 02 | |
iv). Peri-torcular | 02 | 02 | – | – | – | – | – | |
v). Jugular foramen | 01 | 01 | – | – | 01/01 | 01 | 01 | |
3. | Hemangioblastomas | 28 | 15 | 13 | 01 | 04/04 | 04 | – |
4. | Dermoids | 15 | 09 | 06 | 04 | – | – | – |
5. | Epidermoids | 09 | 06 | 03 | 03 | – | – | 01 |
6. | Medulloblastomas | 72 | 53 | 19 | 61 | 31/12 | 14 | 22 |
i).Classical | 53 | 42 | 11 | 51 | 19/07 | 07 | 15 | |
ii). Desmoplastic variant | 11 | 08 | 03 | 04 | 07/01 | 01 | 01 | |
iii). Anaplastic changes | 05 | 03 | 02 | 04 | 03/03 | 05 | 05 | |
iv). Glial differentiation | 03 | 01 | 02 | 02 | 02/01 | 01 | 01 | |
7. | C. Astrocytomas (HG) | 47 | 32 | 15 | 12 | 33/01 | 02 | 01 |
8. | Ependymomas | 43 | 29 | 14 | 09 | 18/05 | 05 | 03 |
9. | C. Pilocytic astrocyto. | 24 | 18 | 06 | 20 | 15 | – | – |
10. | Brainstem gliomas: | 16 | 11 | 05 | 12 | 16/06 | 09 | 07 |
i). J. Pilocytic asstrocytoma | 05 | 03 | 02 | 05 | 05/01 | 02 | 01 | |
ii). Glioblstoma multiforme | 04 | 03 | 01 | 01 | 04/03 | 04 | 04 | |
iii). Fibrillary astrocytomas | 03 | 01 | 02 | 03 | 03/01 | 01 | – | |
iv). Gangliogliomas | 02 | 02 | – | 02 | 02 | – | – | |
v). Oligodendrogliomas | 01 | 01 | – | 01 | 01 | 01 | 01 | |
vi). Primitive neuroectodermal tumor | 01 | 01 | – | – | 01/01 | 01 | 01 | |
11. | Metastatic | |||||||
Posterior fossa | 09 | 05 | 04 | – | 06/05 | 05 | 06 | |
i). Carcinoma lung | 03 | 03 | – | – | 02/02 | 02 | 03 | |
ii). Carcinoma breast | 03 | – | 03 | – | 01/01 | 01 | 02 | |
iii). Renal cell carcinoma | 02 | 01 | 01 | – | 02/01 | 01 | – | |
iv). Malignant melanoma | 01 | 01 | – | 01/01 | 01 | 01 | ||
12. | Pineoblastomas | 07 | 02 | 05 | 04 | 07/03 | 03 | – |
Total | Posterior fossa tumors | 410 (100%) | 259 (63.2%) | 151 (36.8%) | 130 (31.7%) | 165(40.2%) /45(10.9%) | 59 (14.3%) | 47 (11.4%) |