Final Lecture

Question 1

Tumors

Answer 1

a mass of cells whose growth is uncontrolled and that serves no useful function

Can be malignant (cancerous) or benign –> Depends on whether the tumor is encapsulated

Question 2

Who is benign and malignant most common in

Answer 2

Benign more common in women; malignant more
common in men

Question 3

Tumors damage brain tissue by

Answer 3

• Compression
• Infiltration
• Malignant can compress and infiltrate
• Benign tend to only compress

Question 4

Primary and secondary brain tumors

Answer 4

Primary = start in CNS, Most commonly seen in those under 15 and above 65 y/o

• Secondary = Metastasize to brain, fMost common brain metastases are from lung and
  breast cancer.

Question 5

Grading of CNS Tumors: grade 1 and grade 4

Answer 5

Grade 1:
* low proliferative potential
* possibility of cure after surgical resection

Grade 2:
* histological evidence of malignancy
* mitotically active
* prone to necrosis
* associate with rapid preoperative and postoperative disease progression and fatal outcomes