Predicting Pancreatic Exocrine Insufficiency With EUS Elastography.

JED-M Elastography is a method used to evaluate the hardness of different tissues and is based on the principle that softer parts of tissues are easier to deform under compression than stiffer sections of tissues. Elastography translates the elastic properties of tissues into a map of different colors, which reads like a virtual biopsy; the stiffness of tissues is related to their histologic features. An elastographic blue predominant pattern, which is associated with a high strain ratio value, indicates the malignant nature of a pancreatic lesion or lymph node with a high accuracy. However, a green predominant pattern, which is associated with a low strain ratio value, indicates the benign nature of an explored lesion. The accuracy of endoscopic ultrasound (EUS) elastography for the diagnosis of malignancy is higher than 90%.