Neuropatho

Question 1

Answer 1

Transitional meningioma

This field also shows a juxtaposition of meningothelial and fibrous

areas.

Question 2

Answer 2

transitional meningioma

This typical example is composed of whorls and cords of neoplastic cells

Question 3

Answer 3

pituitary adenoma

Question 4

Answer 4

Craniopharyngioma. This craniopharyngioma has solid and cystic components, and disrupts the diencephalon. Note the ‘machine oil’ nature ofthe cyst fluid.

Question 5

Answer 5

Adamantinomatous craniopharyngioma. A loose matrix (stellate reticulum) is due to intercellular fluid accumulation (arrows).

Question 6

Answer 6

Schwannoma. Adjacent Antoni A (right) and B (left) areas.

Antoni A areas, in which spindle-shaped cells with rod-shaped nuclei and dense pericellular reticulin are arranged in compact intertwining fascicles.

Antoni B areas, in which stellate or spindle-shaped cells with smaller,more hyperchromatic nuclei, tenuous cytoplasmic processes, and scanty surrounding reticulin are loosely arranged in a myxoid stroma

Question 7

Key pathology of DMD

Answer 7

myonecrosis