High cytokeratin is cancer.

Generally, cytokeratin is a commonly used tumor marker in clinical practice. If cytokeratin shows a significant increase, 3-5 times higher than the normal range, it will suggest the existence of cancer. At this time, CT, B ultrasound, or MRI examination of the corresponding parts are needed to find cancer lesions. If cytokeratin shows a persistent increase, a full-body PET-CT scan can be performed if necessary to detect early cancer. If lesions in the corresponding area are found, biopsy and pathological examination are required to confirm the cancer.