Invasive carcinoma can be judged as early or late stage by the degree of damage.
1. Early invasive carcinoma: refers to limited infiltration of cancer cells, no metastasis (including local lymph node metastasis and distant metastasis), and the degree of damage is mild.
2. Intermediate stage invasive carcinoma: refers to large local volume of invasive carcinoma or metastasis in adjacent lymph nodes.
3. advanced invasive carcinoma: it refers to extensive local spread of cancer cells, accompanied by distant metastasis, with a large degree of damage.
Diagnosis of invasive carcinoma should be based on clinical symptoms combined with pathological examination. Diagnosis can be made by observing pathological section under microscope and finding that cancer cells break through basement membrane structure. The staging should be determined by perfect imaging examinations such as ultrasound, CT, MRI or PET/CT. Patients should actively follow the treatment prescribed by doctors.