Ousted prime minister Nawaz Sharif’s daughter Maryam Nawaz revealed Wednesday that her mother, Kulsoom Nawaz, has been diagnosed with lymphoma, a cancer of the lymph nodes on the left side of her neck.

"Her treatment begins immediately," said Maryam on Twitter.

Maryam further informed that doctors are hopeful that the disease is curable since it has been diagnosed at an early stage.

Furthermore, she prayed for her recovery and thanked people for their kind wishes.

Kulsoom Nawaz had left for London unexpectedly on August 17 for a medical checkup — the day her nomination papers for NA-120, Lahore, were accepted.

Her departure made headlines because she left ahead of her scheduled appearance before the Election Commission of Pakistan (ECP), where her nomination papers were to be scrutinised for the upcoming by-poll.

The NA-120 seat fell vacant after Nawaz Sharif was disqualified as the prime minister by the Supreme Court on July 28.

The PML-N has said the election campaign in the Lahore constituency will go ahead regardless as local teams are working at all levels.

The party says that the local election campaign team is involved in door-to-door campaigning and where needed, Maryam will also be involved in the campaign.

Addressing the media after a meeting chaired by Nawaz Sharif at Raiwind on Wednesday, Railways Minister Khawaja Saad Rafique said as of now there is no plan to change the party's candidate for the NA-120 by-poll.