A massive bleeding from a gastrointestinal stromal tumor of a Meckel's diverticulum.

INTRODUCTION: Meckel's diverticulum is the most common congenital anomaly of the gastro intestinal tract, present in about 2% of population.

CASE OUTLINE: The article presents the case of a 44-year-old otherwise healthy man with anemia, who was diagnosed lower gastrointestinal bleeding. An abdominal CT scan revealed a clearly demarcated solid tumor in hypogastric region, measuring 65 x 45 mm. A laparotomy through lower midline incision was performed. A surgical resection of a lesion of a Meckel's diverticulum was carried out and a final diagnosis of gastrointestinal stromal tumor was made.The patient made an uneventful recovery.

CONCLUSION: The preoperative diagnosis of a complicated Meckel's diverticulum may be challenging. CT is usually an adequate method to diagnose tumors arising from Meckel's diverticulum.