Were there records of ancient Chinese emperors suffering from malignant tumors (cancer)"?

I personally believe that cancer existed in ancient times, but in ancient times there was a lack of modern technology and medical equipment such as X-rays and endoscopes, so it was basically difficult to distinguish cancer of the internal organs from other diseases. For example, the symptoms of lung cancer are very similar to those of the infectious disease tuberculosis, such as coughing up blood and losing weight, stomach cancer may only have vomiting as its only symptom before it reaches its final stage, or colon cancer may only have constipation. In fact, many diseases have very similar symptoms, and today's medicine is based on clinical diagnosis of suspicion and then use of equipment to confirm the diagnosis, if there is no knowledge of the existence of cancer in ancient times, there would be no special records. But cancers that are visible on the surface of the human body, such as breast cancer, skin cancer, etc., have similar descriptions.

Of course, the average life expectancy in ancient times was not as long as in modern times, and many cancers are more likely to develop as people age, and because of the lack of serious environmental and chemical pollution in ancient times, the incidence of cancer may not have been as high as in modern times.

Modern medicine has also proved that many cancers have hereditary factors, so cancer should have existed in ancient times, but for various reasons there is a lack of accurate records

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