A Rare Case of Synchronous Gastrointestinal Stromal Tumour, Liver Haemangioma and Sigmoid Colon Adenocarcinoma

Multiple primary tumours refer to the occurrence of more than one tumour in the same individual either at the same time (synchronous) or at different times (metachronous). The incidence of multiple primaries in a cancer population varies between 2.4% and 8%. This case report discusses the management of a 61-year-old woman who presented with upper abdominal pain and melaena and ultimately ended up being diagnosed with three different tumours of various histological origins, which are liver haemangioma, gastrointestinal stromal tumour of the stomach and moderately differentiated adenocarcinoma of the sigmoid colon. This case explains the importance of a systematic approach to diagnosis and management and highlights the limitations of imaging studies in diagnosing synchronous primary malignancies. It emphasises the significance of multidisciplinary collaboration in optimising patient outcomes.