Nepal’s Prime Minister Sushil Koirala has been diagnosed with lung cancer at a US hospital, his personal physician said on Thursday.

Mr Koirala, 75, flew to the US 10 days ago for medical treatment as his doctors advised him to have a thorough medical check-up in a well-equipped hospital after black spots were found in his lung, a couple of weeks ago.

“I am really sad to confirm the fact that cancer in Prime Minister’s lungs has been confirmed by the reports of several investigations,” quoted Mr. Koirala’s personal physician Kabirnath Yogi as saying.

Earlier, Dr. Yogi, who accompanied Mr. Koirala to the Memorial Sloan Kettering Cancer Centre in New York, said the Nepalese Prime Minister would receive radiotherapy for treatment of the localised lesion of the lung since his chronic bronchitis does not permit a major surgery of the lung.

Radiotherapy will be administered to Mr. Koirala from Thursday, said Chiranjivi Nepal, senior advisor to the Mr. Koirala.

Mr. Koirala, who underwent an operation for his tongue cancer seven years ago, also had medical follow up in the hospital.