Domingo said he was "lucky" his cancer had not spread
Opera star Placido Domingo has made his first public appearance at the opening of his new restaurant in New York, four weeks after colon cancer surgery.
The 69-year-old pulled out of a UK appearance last month after experiencing severe abdominal pain after a show in Japan.
It was diagnosed as a malignant polyp in the colon and was surgically removed in New York two weeks later.
The singer called for people to seek early treatment for the disease.
Domingo is to begin rehearsals for a new show later this week in Milan.
'Just do it'
He is singing the title role in Verdi's opera Simon Boccanegra at the Teatro alla Scala for six performances starting on 16 April.
Domingo is also due to appear in recitals in Moscow and Qatari capital Doha later this month.
He spoke during a private opening party for the new Manhattan restaurant Zengo, which he co-owns with restaurateur Richard Sandoval.
The Spanish tenor urged people to be screened for colon cancer as soon as possible, as the early stages of the disease present little or no symptoms.
It is the fifth most common form of cancer in the US and the third leading cause of cancer-related death in the Western world, according to the World Health Organisation.
"Every person in this world should have a colonoscopy. I want to say to people, just do it," said Domingo.
"I was lucky to have the pain," he told a gathering at Zengo.