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Carcinoma of Unknown Primary Treatment (PDQ®)

Patient Version
Last Modified: 05/02/2014

Stages of Carcinoma of Unknown Primary



There is no staging system for carcinoma of unknown primary (CUP).

The extent or spread of cancer is usually described as stages. The stage of the cancer is usually used to plan treatment. However, CUP has already spread to other parts of the body when it is found.

The information that is known about the cancer is used to plan treatment.

Doctors use the following types of information to plan treatment: