Classification

Question 1

How many types of osteosarcoma?

Answer 1

Two types
1.Primary osteosarcoma
2. Secondary osteosarcoma

Question 2

How many types of primary osteosarcoma ?

Answer 2

Two types-
1.Intramedullary
2. Surface

1.INTRAMEDULLARY- T.L.S.C- The Lowgrade n Small Cows

The-Telangiectatic
Low grade- Low- grade central osteosarcoma
Small- Small cell osteosarcoma
Cows-Conventional osteosarcoma

2. SURFACE-High PePa

High- High- grade osteosarcoma
Pe- Peristeal Osteosarcoma
Pa-parosteal osteocoma

Question 3

What are subtypes of secondary osteosarcoma?

Answer 3

PIRATE

P-Paget sarcoma
I- implant related osteosarcoma
R- Radiation related osteosarcoma
A- a Osteosarcoma due to chronic osteomyelitis
T- Trauma related- (bone infarct or trauma)
E- ectopic or post zygotic disorder related - like (Maza RoMa Fibre)-Maza Braud syndrome, Rothmund-Thomson,Fibrous dysplasia, Maffucci syndrome, Fibrous dysplasia.