PALO ALTO, Calif. — Apple CEO Steve Jobs appeared gaunt and unsteady on his feet as he exited a California cancer treatment center, in a video published Tuesday by gossip site Radar Online.

PALO ALTO, Calif. — Apple CEO Steve Jobs appeared gaunt and unsteady on his feet as he exited a California cancer treatment center, in a video published Tuesday by gossip site Radar Online.

The footage sparked fears that the tech leader's health is worse than feared.

It captured a frail and shaky Jobs as he left the Stanford Cancer Center — where he is said to be undergoing treatment for a reported recurrence of pancreatic cancer — and slowly walked to the passenger's seat of a sedan his wife was driving.

Jobs, who will turn 56 Thursday, has been on medical leave for undisclosed reasons since mid-January.

The video surfaced ahead of today's annual meeting for Apple shareholders, many of whom have asked the company to disclose in more detail its plans for life after Jobs.

With management saying little about Jobs' condition, the issue will take on its highest profile to date as shareholders vote on requiring more transparency about succession plans for the post Jobs has held for the past 14 years. It's unknown whether Jobs will show up for the meeting at Apple headquarters in Cupertino, Calif.

His latest leave of absence is the third time in the past decade that he has been forced to step back from his role at Apple.

Jobs took medical leave in 2004 after being diagnosed with a form of pancreatic cancer and then again in the first half of 2009, returning to the company in late June of that year.

Unlike the leave he took in 2009, Jobs this time left the length of his absence open-ended.

In recent trading, Apple shares fell thee percent to $340.10 following reports that the company could be forced to delay the launch of its iPad2 due to production problems.