Supporters of Argentina's President Rally Outside Hospital Where She is Being Treated

Cristina Fernandez de Kirchner is receiving treatment for bleeding on her brain

Supporters of Argentina's President Cristina Fernandez de Kirchner have gathered outside the Buenos Aires hospital where she is due to have surgery to treat bleeding on her brain.

It is the latest health scare for Kirchner, 60, who had surgery last year to remove her thyroid glands.

Her husband, former President Nestor Kirchner, died of a heart attack in 2010.