Ailsa Sita-Lumsden

Ailsa Sita-Lumsden, consultant medical oncologist

Consultant in medical oncology


Dr Ailsa Sita-Lumsden is a consultant medical oncologist who specialises in treating oesophageal and stomach cancers as well as cancers of unknown primary (CUP) and gastrointestinal stromal tumours (GISTs).

She qualified as a doctor in 2005 from Guy's, King's and St Thomas' Medical School. Following completion of postgraduate medical oncology training in west London at Imperial College NHS Trust she has returned back to Guy's Hospital as a consultant. 

While training in medical oncology she undertook a Cancer Research UK funded clinical fellowship. She completed her PhD in cancer biology, specifically miRNAs in prostate cancer, at Imperial College London in 2017.

In January 2020 she started as a substantive consultant medical oncologist at Guy’s cancer centre, where she treats upper GI cancers including GISTs as well as cancer of unknown primary. She is also lead for the medical oncology clinical fellows in the department involved in their recruitment and appraisals.

Education and training

  • 2017 PhD, Imperial College London
  • 2005 MB.BS (Hons), King’s College London
  • 2003 B.Sc. (Hons), University College London, History of Medicine

Last updated: May 2022

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