Step 1: Recall the syndrome. The AIDS related complex is the symptomatic intermediate phase of HIV (class B), where immune suppression produces constitutional symptoms and opportunistic conditions.
Step 2: Match the options. Recurrent genital candidiasis, generalized (persistent) lymphadenopathy and chronic diarrhea are all classic ARC manifestations reflecting failing immunity.
Step 3: Spot the unrelated entry. Ectopic pregnancy is a gynecological event caused by abnormal implantation, with no link to immune compromise or HIV staging. It does not belong to ARC.
The non-immunological gynecological condition is the exception.\[\boxed{\text{Ectopic pregnancy}}\]