This symptom may indicate the development of liver cancer. Doctors explain the presence of this pain by the fact that metastases or the tumor itself irritate the nerves that signal pain coming from the scapular area. Also, with liver cancer, pain may appear in the right shoulder 
or, in some cases, along the entire back.
Symptoms of liver cancer include yellow skin, loss of appetite, dark or very pale urine, bloating, nausea, or vomiting. Experts emphasize that hepatocellular carcinoma is the most common primary malignant tumor of the liver. It develops when liver cells (hepatocytes) are reborn.
The main causes of hepatocellular carcinoma are: hepatitis B and C, cirrhosis of the liver, regular consumption of foods that are toxic to the liver (alcohol, for example). Less commonly, cancer is caused by parasitic infections such as schistosomiasis and genetic abnormalities such as hemochromatosis https://en.wikipedia.org/wiki/Iron_overload. Dangerous for the liver and carcinogens – polychlorinated biphenyls, chlorine-containing pesticides, chlorinated hydrocarbons, nitrosamines. Overweight and diabetes also increase the risk of liver cancer.
