Kulsoom Nawaz's cancer surgery successful: PML-N

She underwent the surgery for early-stage lymphoma yesterday. "Now she's back home resting, awaiting further treatment as prescribed by her consultants," Iqbal Sandhu, information secretary at Pakistan Muslim League-Nawaz (UK), told PTI.

Sandhu said Sharif offered his Eid prayers at Pakistan high commission in London this morning. His two sons were also by his side.

"We are grateful to Allah Almighty for successful surgery of Kulsoom bhabi ... May she get well soon!" Sharif's brother and Punjab province's Chief Minister Shehbaz Sharif tweeted.

The former first lady, in her mid-60s, is being tipped as the next prime minister of Pakistan, replacing Shahid Khakan Abbasi.

She is contesting the by-poll scheduled for September 17 for a National Assembly seat from Lahore which fell vacant after the Supreme Court disqualified Sharif in the Panama Papers case on July 28.

Sharif reportedly pitched his wife to stage his come back in the prime minister's house as 'first gentleman'.

Kulsoom has missed campaiging for the by-election due to the surgery. But her daughter, Maryam Nawaz, chose to stay in Pakistan to run Kulsoom's election campaign.

During the surgery, Maryam had tweeted: "Ami (mother) in surgery at the moment. Request you all to pray for her. Thank you."

Sharif arrived in London on Wednesday. In his brief comments, Sharif thanked overseas Pakistanis for their support and promised he will soon address them.