Pediatrics

Question 1

Three waves of neural crest cells?

Answer 1

Do you C DIS

1st: Corneal endothelium, Descemet’s (secreted by endothelium )
2nd: Iris stroma
3rd: Stroma of cornea

Question 2

Ddx Leukocoria

Answer 2

RB, RB, RB
PHPV
Cataract
Toxocariasis
ROP
RD
Medulloepithelioma
Coats

Question 3

What does rhabdomyosarcoma arise from and what are the subtypes?

Answer 3

It arises from mesenchymal elements in the orbital soft tissue.

Alveolar(worst prognosis)
Embryonal(most common 94% survival)
Pleomorphic(best prognosis)
Botryoid(grape like rare variant of embryonal)

Question 4

Three waves of neural crest cells?

Answer 4

Do you C DIS

1st: Corneal endothelium, Descemet’s (secreted by endothelium )
2nd: Iris stroma
3rd: Stroma of cornea

Question 5

Ddx Leukocoria

Answer 5

RB, RB, RB
PHPV
Cataract
Toxocariasis
ROP
RD
Medulloepithelioma
Coats

Question 6

What does rhabdomyosarcoma arise from and what are the subtypes?

Answer 6

It arises from mesenchymal elements in the orbital soft tissue.

Alveolar(worst prognosis)
Embryonal(most common 94% survival)
Pleomorphic(best prognosis)
Botryoid(grape like rare variant of embryonal)

Question 7

Three waves of neural crest cells?

Answer 7

Do you C DIS

1st: Corneal endothelium, Descemet’s (secreted by endothelium )
2nd: Iris stroma
3rd: Stroma of cornea

Question 8

Ddx Leukocoria

Answer 8

RB, RB, RB
PHPV
Cataract
Toxocariasis
ROP
RD
Medulloepithelioma
Coats