There is a lump of meat on top of the testicle, possible causes: 1, normal epididymis tissue, epididymis attached to the back of the testicle in a C-shaped wrapped testicle, the head and tail and testicle adherence is tight, the body part is slightly free, a strip of tissue. When touched by hand, the texture is thicker and tougher without localized pain, and the vas deferens can be touched at the tail, which is the normal epididymal structure, not a disease state.2. Epididymal head cyst, usually the epididymal head cyst part of the semen retention cysts, the outside of the cysts is smooth, and there is no obvious pain at the initial diagnosis. It is tightly and inseparably adhered to the head of testis, and ultrasound examination of testis and epididymis is needed to further identify whether it is epididymal cyst.3. Spermathecal cords and accessory tissues, such as spermatic cord outer sheath or spermatic cord inner sheath, which are adhered to the head of testis in the form of cords, and supply blood to the testis after entering the testis. It is thick in texture on palpation, without localized pain, and requires ultrasound examination of the testicular spermatic cord for further identification.