Nadal said he will talk with his doctors when he returns to Spain after the tournament about whether he will need to have the appendix removed.
"My idea is take it out, but you can imagine that I didn’t (think) much about that yet. I am here in Shanghai. I just want to try. Then when I go back home, I will talk about the situation with my doctor," he said.
The Spaniard is playing just his second tournament since returning from a two-month layoff due to a wrist injury. After missing the summer hard-court season, including the defense of his title at the U.S. Open, Nadal said it was important to get back on the court as soon as possible so he’s back in top form before the Australian Open in January. He reached the China Open quarterfinals last week.
"I don’t expect anything from these two tournaments. I expect just to come here and play again and practice and feel a little bit again the competition, try to get in rhythm as soon as possible," he said.
Nadal plays his opening match on Wednesday against countryman Feliciano Lopez.