Plurals

Q. What is the proper treatment for “disease” in “Center for Pancreatic and Hepatobiliary Disease”?

A. It’s not entirely clear; the manuscript editors I consulted prescribed treatments ranging from dietary to surgical. But since the word “Disease” seems to refer to two diseases, three out of four editors recommended the plural.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]