Final answer:
Vulvar cancer recurrence can occur within the first year, but it can also happen after 5 or 10 years, or even later. Recurrence is unpredictable and can vary from person to person.
Step-by-step explanation:
Vulvar cancer recurrence can occur at any time, but the likelihood is higher within the first year following treatment. Research has shown that up to 80% of recurrences happen within the first two years after treatment. However, it is important to note that vulvar cancer recurrence can also occur after 5 or 10 years, or even later. Recurrence is unpredictable and can vary from person to person.