There is a lump next to the testicle, possible causes: 1. Inflammatory nodules of the epididymis. Secondary to acute epididymitis, swelling and pain of the epididymis may appear in the acute stage, even causing discomfort such as distension, pain and back pain in the small abdomen. When touched by hand, swollen nodules and pain may appear next to the testicles. When the inflammation gradually subsides after anti-inflammatory treatment, the internal fiber scar repair is carried out and inflammatory scar nodules are formed, which become hard and reduce in size when touched by hand and can exist for life. 2. Epididymal tuberculosis. Secondary to pulmonary tuberculosis or other urinary tract tuberculosis, it can develop when the immunity in the body is reduced. In the acute stage, swelling and pain of the epididymis may occur. After anti-tuberculosis treatment is carried out, bead-like nodules with hard texture and no pain may appear in the later stage. When touched by hand, they resemble the feeling of touching Buddha beads, and are fixed in position and cannot be easily pushed. Tuberculosis antibody and ultrasound can be performed to further examine and confirm the diagnosis.