The most common cause of pain in the right lymph is inflammation and infection, and the patient may also have fever. The patient’s symptoms can gradually improve with timely anti-infection treatment. Some patients are prone to lymphatic metastasis due to tumors, including lymphoma or malignant tumors of substantial organs, commonly to the right side of the neck and supraclavicular fossa, where the patient presents with localized masses and obvious pain. Lymphatic metastasis is a manifestation of tumor progression or advanced stage. Patients will have symptoms of primary disease, including loss of appetite, weight loss, and anemia.