Necrosis

Question 1

Teratoma

Answer 1

• 2 or more germ layers arising from mesenchymal cells

- benign or malignant

Question 2

Choristoma

Answer 2

• ectopic rest

Question 3

Hamartoma

Answer 3

• disorganized normal tissue in normal location

- can present as a lump

Question 4

Cyst

Answer 4

fluid filled space

Question 5

Mixed Tumours

Answer 5

• tumours with divergent differentiation

- benign or malignant

Question 6

“carcinoma in situ”

Answer 6

= severe dysplasia

- as long as the basement membrane is intact, carcinomas are considered at severe dysplasia

Question 7

Pathways of Metastasis

Answer 7

1. seeding via body cavities
   - peritoneal cavity = most common
2. lymphatic spread
   - follows natural drainage
3. hematogenous spread
   - follows routes of venous drainage
   - once it goes to blood can go anywhere