Background: Gastrointestinal stromal tumour (GIST) is a rare entity.The diagnosis, treatment and follow-up pose a challenge in our environment.We describe the presentation, diagnosis, treatment, and long-term follow-up of a patient with a localized, large exogastric GIST.Method: The case notes of a 51-year-old woman who presented with a one-year history of upper abdominal swelling with no associated symptom was reviewed.Result: On examination, an oval intraperitoneal mass at the Airliner epigastrium measuring 16 x 14cm which was freely mobile, smooth, firm, non-tender with dull percussion notes was found.
She subsequently had resection of a large exogastric mass with a histologic diagnosis of GIST.Following tumour resection with a wide margin of gastric wall, she has done well so far for ten (10) years.Conclusion: Wide margin gastric resection may suffice Servo in the treatment of a large localized gastric GIST when it is exogastric.