Megastar Amitabh Bachchan has revealed that he will undergo abdominal surgery Saturday.

"There were some medical procedures today as well for -- and this is being disclosed to the Ef (extended family) at this point of time -- a surgery that I shall be undergoing on the 11th morning. I do not wish to talk much on my medical condition, but trust and faith in my FmXt (extended family) allows me to do so," Amitabh wrote on his blog.

"The surgery they say is not too complicated, but then all doctors say the same as you end up on the operating table, and before long the details and the subsequent anxieties begin to rise.

"There has been a dosage of injections intravenous that began today and shall continue for a few days... a pain in the abdomen has to be investigated tomorrow under a CT Scan and then and only then shall the ok for the surgery be given... so the next few weeks shall be full of nothing else but the hospital and medical bulletins... boring it may be but it shall be as informative as possible," Amitabh posted.

The 69-year-old has been battling with health issues for long and wishes to have an ailment-free life, but says he is grateful that he is still going strong.

"My stomach which has already been the bed of many complicated battles in the past, shall have to entertain this as well. It's a war zone, my body, and one which has been through a great deal and still does," he wrote.

"I sometimes lament the fact that I do not have the benefit of a complete and ailment free body structure, and I wonder how wonderful it would be to be normal again. But this was my fate and I shall accept it with a smile.

"I just feel blessed that despite all the encumbrances the Almighty gave me the courage to keep going has been undiluted. That courage, wrapped as it were, in the love and prayers of well wishers has pulled me through on several occasions and on this one too I solicit similar," he added.

This is not the first time Big B is undergoing abdominal surgery. In 2005, he had undergone another abdominal surgery at the Lilavati Hospital. The megastar had that time been said to be suffering from colitis in the diverticulum area of the colon.