Tumores gástricos estromales. Diagnóstico, pronóstico y tratamiento quirúrgico actual. Seguimiento de 18 pacientes tratados

Initial symptoms consist of upper gastrointestinal hemorrhage and abdominal pain. Gastroscopy and imaging techniques lead to a suspected diagnosis, which can be confirmed by immunohistochemical studies, in which the “gold standard” is positivity for CD117; CD34 (+), vimentin (+), actin (−) and protein S-100 (−) are also used. Treatment consists of tumoral resection with negative margins.