"walled-off necrosis (WON or WOPN): develop after 4 weeks; encapsulated heterogeneous non-liquefied material"
"walled-off necrosis (WON or WOPN): develop after 4 weeks; encapsulated heterogeneous non-liquefied material"
"pseudocysts: develop after 4 weeks; encapsulated peripancreatic or remote fluid collections"
"acute necrotic collections (ANCs): in the first 4 weeks; non-encapsulated heterogeneous non-liquefied material"
"walled-off necrosis (WON or WOPN): develop after 4 weeks; encapsulated heterogeneous non-liquefied material"