Metastatic immature ovarian teratoma
Follow up. Previous gynaecological surgery for immature ovarian teratoma.
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Multiple heterogenous lesions with fluid, fat and calcific elements in the liver, the largest occupying most of the right lobe and compressing the right kidney.
Numerous identical nodules/masses in the peritoneal cavity, the largest measuring 4cm in the left paracolic gutter.
Right ureteric stent.
Immature ovarian teratoma is an uncommon ovarian germ cell tumour, which differs from the far more common mature ovarian teratomas (dermoid cysts). Histologically they contain immature tissue, and clinically are more malignant in behaviour. It is a tumour largely of young females, as in this example.
Immature teratomas may metastasise to peritoneum, liver or lung. Large volume liver and peritoneal metastases in this case shown the soft tissue-fat-calcification typical of a dermoid.