Trinamool Congress Chief Mamata Banerjee on Sunday underwent a successful laparoscopic gall bladder operation in a south Kolkata nursing home.
"Her gall stones were removed after a laparoscopic surgery. Though she is fine now we have put her under observation," said PC Das, the doctor attending to the Trinamool Congress leader.
"We can be more sure about her condition on Monday," the doctor said.
A seven-member medical board was constituted for Banerjee, who developed several complications since her 25-day fast at Esplanade East in Kolkata in December last to protest against acquisition of farmlands at Singur.
Gallstones are solid stones formed in the gall bladder from cholesterol, bile salts and calcium.
Combining histrionics with raw humour, Banerjee on Saturday addressed her first rally at Singur after withdrawal of prohibitory orders against a large gathering there.
"I have risked my life for you because I am still suffering from the post-hunger strike complications. I was heckled, assaulted by police and the Communist Party of India-Marxist cadres dressed as cops. But then my life is not important if I am to live in this state where there is no democracy," she said at the rally while lambasting Chief Minister Buddhadeb Bhattacharya for acquiring farmlands for a Tata Motors small car project.