The World Health Organization (WHO) classified the sonographic appearance of cystic echinococcosis (CE). This overlaps with the classification of Gharbi (above).
|
Sonographic Features |
WHO |
|
unilocular cyst with double line sign; unechoic |
CE1 |
|
multiseptated cyst ("honeycomb", "rosette") |
CE2 |
|
cyst with detached membranes ("water lily sign") |
CE3a |
|
cyst with solid matrix and daughter cysts |
CE3b |
|
cyst with heterogenous contents (hyperchoic and/or hypoechoic) |
CE4 |
|
solid with calcified wall |
CE5 |
|
WHO |
Gharbi Type |
|
CE1 |
I |
|
CE2 |
III |
|
CE3a |
II |
|
CE3b |
NA |
|
CE4 |
IV |
|
CE5 |
V |
|
WHO |
Biological Activity |
|
CE1 |
active |
|
CE2 |
active |
|
CE3a |
transitional |
|
CE3b |
transitional |
|
CE4 |
inactive |
|
CE5 |
inactive |
Specialty: Infectious Diseases
