A<unk>  <unk>  is the most common tumor in the newborna tumor. It develops at the base of the coccyx. Many children can be diagnosed after birth and will recover fullly after treatment. Usual presentations include a fluid-filled cyst or a solid mass sticking out from the fetus's buttocks in fetus peroid by ultrasound, visible lump or mass under the skin at the top of the buttocks crease in childhood, or discomfort and pain in<unk>  region. Treatments invlove surgery and radio frequency ablation.
Sacrococcygeal teratoma
Pineal yolk sac tumor
Gonadoblastoma
Pineal gland cyst
Scrotal cyst
Epididymal head cyst
Chordoma
Hydrocele testis