Doctors treating former prime minister Nawaz Sharif's wife, Kulsoom Nawaz , noted on Tuesday the reappearance of tumour nodes. 

Kulsoom has been undergoing chemotherapy in London after being diagnosed with lymphoma — a cancer of the lymph nodes in the middle of last year.

She underwent a total of six chemotherapy sessions and three surgeries during the last seven months.

After a series of scans last week, doctors detected the resurgence of the tumour and a team of doctors will now decide on further surgery along with strong radiotherapy treatment.

The former premier’s wife was diagnosed with the disease by British doctors on August 22, 2017.

Kulsoom had left for London unexpectedly on August 17 for a medical checkup — on the day when her nomination papers for the NA-120 constituency were accepted amid much political hype.

During Kulsoom’s absence, Maryam Nawaz spearheaded her mother's by-election campaign and led it to victory. However, Kulsoom has not returned to Pakistan since then owing to her illness.

The NA-120 seat had fallen vacant after the Supreme Court disqualified Nawaz on July 28, 2017 in the Panama Papers case over charges of concealing his salary from his son's Dubai-based company that he claims he never received.