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Mum's 'Constipation' Mistaken for Rare Cancer
17 Jul
Summary
- Woman mistook rare incurable cancer symptoms for constipation.
- Diagnosed with an 8cm gastrointestinal stromal tumour at 31.
- Cancer returned after initial surgery and treatment.

A 33-year-old mother, Chelsea Gallimore, experienced severe abdominal pain, night sweats, and fatigue, initially believing them to be symptoms of constipation. However, her condition worsened, leading to an emergency hospital visit where doctors discovered an eight-centimetre mass on her bowel. A biopsy confirmed a diagnosis of gastrointestinal stromal tumour (GIST), a rare cancer affecting approximately 900 people annually in the UK. Chelsea's diagnosis at 31 was particularly unusual, as GIST is typically diagnosed in older individuals.
Following surgery in March 2024 and treatment with imatinib, Chelsea experienced a remission. However, she stopped medication in June 2025, and by New Year's Eve, the cancer had returned and significantly progressed, spreading to other areas. Doctors determined the disease to be incurable and inoperable. She is now undergoing palliative care to prolong her life and manage her pain.
Chelsea is documenting her journey on social media to raise awareness for GIST and encourage prompt medical attention for persistent symptoms. Her story has influenced discussions leading to the Rare Cancers Act. She plans to marry her partner and is raising her 11-year-old son, advocating for greater awareness of rare cancer symptoms.