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The tenor is expected to see a doctor while in New York. "Thank you so much for all the concern regarding my health and my recent cancellations," he wrote on Facebook on Monday.
The 73-year-old Spanish tenor was hospitalized last year for a pulmonary embolism and later made a full recovery. In 2010, he underwent surgery to remove a cancerous polyp in his colon.
Domingo currently serves as the general director of L.A. Opera.