Abstract
Small cell carcinoma of the ovary occurs mainly in young women and is extremely rare in a patient younger than 16 years of age. Early distant metastases or recurrence of this type of tumor is common and the response to chemotherapy or radiotherapy has been disappointing. The prognosis of this type of tumor is very poor. We report the ultrasonography, PET/CT and MRI findings of a small cell carcinoma of the ovary with severe peritoneal metastases in a 12-year-old girl