A video of Apple CEO Steve Jobs leaving a California café has been released by entertainment website Radar Online.
In the footage dated February 8, a faint-looking Steve Jobs is seen walking to his car with his wife Laurene from a Palo Alto café. As Laurene gets in at the driver's side of the car, Mr Jobs weaves unsteadily towards the passenger side door.
At one point, his left foot crosses over in front of his right, forcing him to step widely to regain his balance.
Job's battle with cancer started in 2004 and he reportedly went to Switzerland in 2009 to undergo a rare radiology treatment.
Earlier, the Wall Street Journal reported that Jobs also had a secret liver transplant in Memphis.
Jobs announced his medical leave in January in an email to employees, saying the board of directors has granted me a medical leave of absence so I can focus on my health.
The Apple CEO, who is worth $6 billion, is putting up an amazingly brave battle and even did a full day's work on February 7, the day before he went to the Cancer Centre.
Jobs, who is currently on his third medical leave, has battled a rare form of pancreatic cancer for seven years. Only about 4 per cent of patients with any form of pancreatic cancer live longer than five years, the Enquirer reported.