There's a lump on the side of his neck.

There is a small lump in the side of the neck, more common is the swelling of lymph nodes. Lymph node swelling factors quite many. There are simple hyperplasia, inflammatory hyperplasia, may be tuberculous lesions, there may be lymphoma, there are some may be malignant tumor metastasis. Therefore, if suspected lymph nodes, it is recommended to do color ultrasound further basic judgment, see what nature.