Possible complications of swollen lymph nodes can be parotid gland cancer or lymph gland cancer. Typical signs of lymph node cancer are particularly painless swollen lymph nodes, fever, weight loss and night sweats. Lymph node cancer can occur at any age, but men are affected slightly more often than women. The therapy used for treatment depends on the type and stage of lymphoma. Parotid gland cancer is usually only detected at a later stage because the tumour is only felt when it is large enough. However, swollen lymph nodes can be a first sign.  The tumour can be felt as a hard, non-displaced lump in front of or under the ear and can be painful. Parotid cancer, also called parotid carcinoma, is much more common in men than in women. Furthermore, this type of cancer is extremely rare.