What does "shotty mild retroperitoneal adenopathy" mean?

Small: "shotty" means "the size of gun shot." when lymph nodes are "shotty, " they're generally not thought to be important.

Small nodes: Means they saw tiny lymph nodes in the posterior part of the abdomen. The clinical significance can vary from person to person. The doc who ordered the test will judge what to do next with that info depending on the clinical setting. Best to you.