D.D.of Brain Tumors

BRAIN TUMORS:
1-Gliomas:
-Low grade astrocytoma (grade 1 and 2) ---àbenign
-Anaplastic astrocytoma (grade3) ---àmalignant
-Glioblastoma multiforme (grade 4)-àmalignant
-Ependymoma, sub-ependymomas and oligodendrogliomas also considered as gliomas
-Pilocytic astrocytoma considered to be the most benign lesion while glioblastoma multiform is the most malignant form.
2-Primitive neuroectodermal tumor (PNET)
-In children
-Include medulloblastomas, pineoblastomas and ependymoblastomas
3-Hemangioblastoma
-Affect cerebellum and spinal cord.
-Form a part of von Hippel lindau disease
4-Metastases
-Single or multiple
-Leptomeningeal carcinomatosis
Brain tumors spread through CSF spaces
*Astrocytoma
*Ependymoma
*Pineoblastomas
*Medulloblastomas
Meningial enhancement
Benign
Meningial fibrosis and meningitis
Malignant
Leptomeningeal carcinomatosis

5-Tumors mimics
-Abscess
-Tumefactive multiple sclerosis
6-Meningioma
7-Sellar tumors
-Pituitary macro adenoma
-Pituitary micro adenoma
-Meningioma
-Craniopharyngeomas
-Hypothalamic gliomas and Dermoid
8-Cerebello-pontine angle tumors
-Acoustic neuroma and acoustic neuritis.
-Meningioma, Leptomeningeal scarring , lipoma, Epidermoid cyst.