Answer
A permanent residence permit in Uruguay does not require regular renewal, unlike temporary status. Permanent residence is described as the permanent, final stage of residency, unlike temporary residency, which is granted for a limited period.
It is important not to confuse residence status with an identity card. Residence is the right to reside, while the cédula de identidad is a document confirming identity and lawful presence in the country. The physical document may be updated separately from the status itself.
Permanent residence does not mean you can ignore the rules governing your stay indefinitely. The law provides grounds for revocation, including an absence from the country lasting more than three years. For extended absences abroad, it is worth considering the consequences for your status in advance.