3.4 Clinical Characteristics

Question 1

What are some features of benign tumors?

Answer 1

• Slow growth
• Well circumscribed
• Mobile
• Distinct

Question 2

What are some features of malignant tumors?

Answer 2

• Rapid growth
• Not distinct
• Disorganized
• Invasive

Question 3

What is the absolute distinguishing feature between benign and malignant tumors?

Answer 3

Metastasis. Benign tumors NEVER metastasize.

Question 4

What intermediate filament makes up epithelium?

Answer 4

Keratin

Question 5

What intermediate filament makes up mesenchyme?

Answer 5

Vimentin

Question 6

What intermediate filament makes up muscle cells?

Answer 6

Desmin

Question 7

What intermediate filament makes up neuroglia?

Answer 7

GFAP

Question 8

What intermediate filament makes up neurons?

Answer 8

Neurofilament

Question 9

What marker is commonly used for prostate cancer?

Answer 9

PSA

Question 10

What marker is commonly used for neuroendocrine cells?

Answer 10

Chromogranin

Question 11

What is a good marker for melanoma?

Answer 11

S100

Question 12

What is required for diagnosis of cancer?

Answer 12

Tissue biopsy

Question 13

What is staging of cancer based on?

Answer 13

Size and spread

Question 14

What is the most important prognostic factor in cancer?

Answer 14

Metastasis