RESUMEN Introduccion: El adenocarcinoma gastrico corresponde al 90% de los tumores gastricos y el 10% restante linfomas no Hodking, es el cuarto tumor gastrico maligno mas frecuente y el segundo con mayor prevalencia a nivel de algunos paises, particularmente de Asia y Latinoamerica, el primero en incidencia a nivel de Colombia, y se presenta con mayor frecuencia entre la sexta y septima decada de la vida. Objetivo: Describir a traves de un estudio observacional descriptivo el caso clinico de un adulto mayor con Carcinoma gastrico. Materiales y metodo : Estudio de caso. Paciente femenino de 76 anos natural de Gameza, Boyaca Colombia, tratado en el hospital Regional de Sogamoso. Resultados: paciente femenino adulto mayor, con antecedentes patologicos, de artrosis de cadera, y consumidora habitual de maiz cocido con cenizas, exposicion cronica a humo de carbon; con clinica inespecifica de dolor en epigastrio, perdida progresiva de peso en 6 meses, El estudio histologico demostro una lesion compatible con adenocarcinoma infiltrante moderadamente indiferenciado de celulas escamosas y extensas areas de hemorragia intersticial. Conclusiones : Por la alta incidencia, mortalidad e impacto social en Colombia, es fundamental conocer la clinica de presentacion para el diagnostico clinico y manejo adecuado. PALABRAS CLAVE: Adenocarcinoma, cancer gastrico, cancer de celulas escamosas. (DeCS) ABSTRACT Introduction: About 90% of gastric tumors corresponds to gastric adenocarcinoma and the remaining 10% to non-Hodgkin lymphoma; gastric adenocarcinoma is the fourth most common malignant gastric tumor and the second most prevalent in some countries, particularly in Asia and Latin America; the first with most incidence level in Colombia, and it occurs most often between the sixth and seventh decade of life. Objective: To describe through a descriptive study the clinical case of an adult woman with gastric carcinoma. Materials and Methods: Case of a Female patient, 76 year-old from Gameza, Boyaca Colombia, treated at the Regional Hospital of Sogamoso. Results: Major adult female patient with medical history of hip osteoarthritis, and habitual consumer of cooked corn with ashes, chronic exposure to coal smoke; unspecific symptoms of epigastric pain, progressive weight loss in 6 months’ Histological examination showed a lesion compatible with moderately undifferentiated adenocarcinoma, infiltrating squamous cells and large areas of interstitial hemorrhage. Conclusions: Because of the high incidence, mortality and social impact in Colombia, it is essential to know the clinical presentation for correct clinical diagnosis and proper management. KEYWORDS : Adenocarcinoma, gastric cancer, squamous cell cancers. (DeCS)