Formatting Guidelines for RadLex Terms
These guidelines may help in searching for a given term
- Do not use plurals, except where the plural item is a necessary or intrinsic part of the term (e.g. "fused ribs") or if the term is never referred to in the singular (e.g. "meninges").
- Leave out the word "the" in RadLex terms.
- Descriptive terms are used as preferred terms in most cases rather than an eponym (named after a person), unless that term is too unwieldy and/or the eponym is the only or best-known name for the item in question (e.g. we maintain "Crohn disease" as a primary term).
- Omit the possessive "s" (apostrophe-s). (E.g. "Alzheimer disease" not "Alzheimer's disease").
- For terms that require anatomic location modifiers to distinguish from another similar term, use "of X" rather than an adjectival form of X. (E.g. "hilum of kidney" preferred to "renal hilum". (However, if an item is generally referred to with the adjectival form as an intrinsic part of the name, then that form is retained.)
- Choose English term unless the Latin is the standard.
- When there are descriptive terms that serve to specify a particular one of several similar objects (such as "right leg"/"left leg"), then the descriptive terms are moved to the Modifiers list, and the object is listed only in its generic (e.g. "leg").
- Anatomic variants are included under Findings.
- If a foreign name has non-English characters in it, we have included both the original version and the name with the closest English equivalent character (e.g. "o" for "ö"
- Many compound terms may be written with or without a hyphen, and they may not have both been included, so try both ways.

