Introducción: Los tumores sincrónicos son sumamente raros, la coexistencia de cáncer de colon y apéndice es un fenómeno relativamente inusual, que plantea problemas diagnósticos a la hora de discriminar la naturaleza primaria o metastásica de cada uno de ellos. Este hecho se suscita en la mayor parte de los casos ante adenocarcinomas mucosecretores sincrónicos. Reporte de caso: Presentamos el caso de una paciente femenina de 72 años de edad que ingresó al servicio de emergencia del Hospital Regional Docente Las Mercedes de Chiclayo por sintomatología de dolor abdominal agudo, donde se le realizan estudios imagenológicos con diagnóstico presuntivo de neoplasia maligna de recto, ingresando a sala de operaciones. El resultado anatomopatológico evidenció un diagnóstico de Adenocarcinoma tubular con componente mucinoso en recto-sigmoides de bajo grado de malignidad (moderadame...

Introduction: Synchronous tumors are extremely rare, the coexistence of colon and appendix cancer is a relatively unusual phenomenon, which poses diagnostic problems when it comes to discriminating the primary or metastatic nature of each of them. This fact occurs in most cases with synchronous mucosecretory adenocarcinomas. Case report: We present the case of a 72-year-old female patient who was admitted to the emergency service of the Las Mercedes Regional Teaching Hospital in Chiclayo due to symptoms of acute abdominal pain, where imaging studies were performed with a presumptive diagnosis of malignant neoplasia of the rectum. operations room. The pathological result shows a diagnosis of tubular adenocarcinoma with a mucinous component in the rectus-sigmoid of a low grade of malignancy (moderately differentiated), with invasion to the adjacent peri-rectal adipose tissue, infiltrative ...