For gallbladder cancer, its staging is mainly based on the size of the tumor and whether there are metastases to other parts of the body, including lymph node metastases. In early-stage gallbladder cancer patients, the tumor is generally small and there are no metastases to other parts of the body. At this stage, patients typically do not show specific symptoms.

Additionally, for patients with mid-stage gallbladder cancer, they may experience discomfort or dull pain in the upper right abdomen, and may also experience weight loss, possibly even developing cachexia. Therefore, gallbladder cancer patients can undergo surgical removal and a pathological examination can provide a better assessment of the pathological stage, leading to a better treatment plan.