Masri had taken refuge at Al Shifa hospital in Gaza City, in the north of the enclave, with his mother and sister 10 days ago after receiving treatment in another hospital for a leg wound.
He said he and his family walked three kilometres (two miles) before passing Israeli tanks that have advanced to the city, and walked a few more kilometres beyond the tanks before getting a lift.
It says Hamas militants have hidden command centres and tunnels beneath Shifa, allegations which Hamas denies.
CHAOTIC SCENESA woman who fled Al Shifa on Friday said she had been receiving treatment for a wound in the maternity department.
The appearance of the hospital entrance also matched file imagery and the source has uploaded several videos from the hospital previously and was known to be there.
Persons:
Al, Ayman Al, Masri, Al Shifa, Israel, Nidal Al, Timothy Heritage, Mark Heinrich Our
Organizations:
Hamas, REUTERS, Reuters, Thomson
Locations:
Al Shifa, Gaza, Israel, GAZA, Israeli, Gaza City, Al, Shifa, Al Shifa's