It was mildly hyperdense (38 HU) on pre-contrast imaging, and heterogeneously enhanced on nephrographic phase (78 HU) but less than that of normal parenchyma (121 HU), with an attenuation ratio of ...

chronic pancreatitis (including focal), lobularity (normal parenchyma surrounded by fibrous bands), and, much less likely, a neuroendocrine tumor, lymphoma, metastatic tumor, or early cancer.