Final answer:
Somatoform disorders are psychiatric conditions, not general medical conditions, and thus would not be noted on Axis III of the DSM, which was reserved for medical conditions relevant to mental disorders.
Step-by-step explanation:
The question relates to the classification of mental and physical health conditions as noted in the DSM (Diagnostic and Statistical Manual of Mental Disorders). Specifically, you are asking about Axis III, which, in previous versions of the DSM, listed general medical conditions that are potentially relevant to understanding or treating an individual's mental disorder. These might include infectious diseases, conditions affecting various organ systems like the digestive system, as well as neoplasms (cancers). Given the options presented, somatoform disorders would not be included on Axis III because they are in fact psychiatric disorders characterized by patients experiencing physical symptoms that have no identifiable physical origin, and would typically be listed under Axis I in older versions of the DSM.