Grandfather's Tumors are IPMNs because they have slightly higher frequencies among men, with a peak presentation at approximately 70 years old. They clearly communicate with the main or secondary pancreatic duct and can range from benign to frankly malignant. Malignant IPMNs are frequently associated with main ducts which are more than 1 cm or with a secondary duct that is more than 3 cm 2.
Tumor del abuelo: Corresponde a las IPMN, ya que su frecuencia es de predominio ligero en los hombres, con pico de presentación aproximado a los 70 años, claramente comunicados al conducto pancreático principal o secundario, pueden ser desde benignos hasta francamente malignos, y se ha visto más frecuentemente estos últimos asociados a un ducto principal mayor de 1 cm o secundario mayor de 3 cm 2.