Cancer Stage
15.2.1 Cancer Stage
Cancer stages are expressed with the use of capital roman numerals:
stage I
stage II
stage III
stage IV
The term “stage 0” usually indicates carcinoma in situ.
Histologic grades are expressed with arabic numerals, eg, grade 2.
Letter and numerical suffixes, usually set on the line, may be added to subdivide individual cancer stages, as in the following examples:
stage 0a
stage 0is
stage IA
stage IE
stage IB2
stage IIIE+S
stage IVA
(E indicates extralymphatic spread; S, splenic involvement [as seen in Hodgkin disease]; “is,” in situ.)stage IVB