Primary tumors of the CNS Flashcards Preview

ANATOMY KAPLAN FOR THE USMLE > Primary tumors of the CNS > Flashcards

Flashcards in Primary tumors of the CNS Deck (14):
1

Three most common primary tumors of the

CNS-PNS

  1. Glioblastoma multiforme
  2. Meningioma
  3. Schwanoma

2

A tumor :

Higlhy malignant

With butterfly appearance in TC

With areas of  pseudoplisading necrosis

GLIOBLASTOMA MULTIFORME

Grade IV astocytoma

3

Pseudopalisading necrosis is ?

Areas of necrosis surrounded by rows of neoplasic cells.

Common in glioblastomas

4

Tumor:

Stained with GFAP

Rosenthal Fibers

Pylocitic

Astrocytoma

Benign tumor childs-young adults

Children:posterior fossa
 

5

Slow growing tumor

Long survival

Cells with perinuclear halo

Fried egg appearance

Oligodendroglioma

6

Ependymoma characteristics

Ependymal origin

In IV ventricle= Hydrocephalus

Rosettes and pseudorosettes

7

Primitive neuroectodermal tumor

Highly malignant

Meduloblastoma

8

Psammoma bodies are :

Associated with which CNS tumor

Round zones of calcification

Meningiomas

9

Meningiomas characteristics

Attach to dura compress underlying brain without invasion

Psammoma bodies

Second most common

Dural convexities; parasaggital region

10

Neurofibromatosis Type 2 is related to which kind of tumors ?

Bilateral Acoustic schwanomas

11

Schwanomas Characteristics

Third most common primary tumor

Frequent location: VIII at cerebellarpontine angle

Hering loss, tinnitus, CN V-VII signs

Antoni a (hypercellular) areas

Antoni B (Hypocellular) areas

12

Retinoblastomas characteristics

Sporadic: Unilateral

Familial: Bilateral

13

Familial retinoblastomas are associated with other type of tumors like ?

Osteosarcoma

14

Tumor derived from oral epithelium

Histologically ressembles an Adamantinoma

Optic chiasmatic symptoms

Pituitary gland involved

 

 

Craneopharyngioma

Derived from Rathke pouch