Published: 13 January 2020
Author(s): Leo Alexandre, Charelle Manning, Simon S M Chan
Issue: January 2020
Section: Review article

Gastrointestinal (GI) cancers are the most common malignancy worldwide, leading to over 1.6 million deaths per annum [1]. The significant burden from this disease and its association with iron deficiency anaemia (IDA), particularly in those of an older age [2–4], has led to national guidelines recommending further investigation of the GI tract in the presence of IDA [5–8]. Unlike IDA, there is little consensus regarding the need for further investigations in those with iron deficiency without anaemia (IDWA), despite this being a common haematological finding often noted on routine blood tests.

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