The gastrointestinal stromal tumours expand from the undefine mezenchimal cells of the intestinal wall and the origin is in the Cajal interstitial cells. The agresivity of GIST is difficult to be evaluate. Very importants factors for grading are the tumour localisation, the invasion of serosa or mucosa, the dimensions of tumour and the number of mytosis. We present a case with haemoragic gastric stromal tumour, with small dimensions, which was initially diagnosed as a "benign" tumour. Seven years after the operation, the patient presented voluminous liver metastases. After right hepathectomy and medical treatment with Glivec we followed up the case. Eleven years after the first operation she presented a subcutaneus metastasis in parietal region, which was confirmed with imunohistochemical exam. The patient is still under observation with higher doses of Glivec.
Conclusions: The gastrointestinals stromal tumours represent a very rare group of digestive tract tumors, with malignant potentially evolution; the first choice of treatment is surgery, with complete ablation of the tumour. The medical treatment with Glivec is necessary in case of reccurence or metastases; the stromal tumours present a strange evolution, for this reason all the patients must be under medical observation, for the rest of their life.