Thanks for the query.
It is indicating a missed miscarriage
In it the fetal cardiac activity stopped few weeks back.
But the fetus remained inside leading to missed miscarriage.
So the gestational age
according to the lmp is more.
Whereas the crown rump length is less as the fetal growth stopped.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429