They can have cystic and solid parts. This type of tumor occurs more frequently in infant females. The most common sign is a large external mass that can appear as a bulge in the back or the abdomen. If the tumor is internal and cannot be seen, some symptoms are urinary frequency, constipation and weakness in the legs. Ovarian tumors in children are most common during adolescence.
Symptoms can include nausea, vomiting, pain, constipation or problems with urination.
Testicular tumors are most commonly found in male children during infancy or after puberty. Tumors are normally discovered during a testicular examination. The tumors are painless and usually feel like a small hard mass in the testis. Germ cells develop while the child is still in the womb. The germ cells move through the developing child to the area where the sex organs will grow.