Gastric GIST with synchronous neuroendocrine tumour of the pancreas in a patient without neurofibromatosis type 1.

The gastrointestinal stromal tumours (GISTs) are the most common mesenchymal tumours of the gastrointestinal tract. These are rare tumours with an incidence of 15 new cases per million per year. The occurrence of neuroendocrine tumours of the pancreas is rare, representing 1-5% of pancreatic cancers, and it is estimated that its incidence does not exceed five to one million.

Analysis of clinicopathologic characteristics and prognosis of gastric cancer in young and older patients.

Background: The worldwide incidence of gastric cancer is gradually declining, however it remains the fourth highest in cancer incidence and the second leading cause of cancer death. Gastric cancer in young people is a disturbing problem and the routine screening does not include people less than 35 years. The clinicopathological features of gastric carcinoma are said to differ between young and elderly patients and it is thought that the prognosis of this disease is worse for younger patients.

[Bariatric surgery: epidemic of the XXI century].

Obesity is a chronic and endemic disease in developed countries, there is an inverse relationship between the socio-economic level and the prevalence of this disease. Their costs are responsible from 2 to 7% of the total health costs. The prevalence of obesity in the world is so high that the World Health Organization considered this disease as the global epidemic of the XXI century.