A<unk>  refers to a malignancy in the ovary that metastasized from a primary site, classically the gastrointestinal tract, although it can arise in other tissues such as the breast. Gastric adenocarcinoma, especially at the pylorus, is the most common source.<unk> s are often (over 80%) found in both ovaries, consistent with its metastatic nature.
Krukenberg tumor
Brenner tumour
Nesidioblastoma
Koenen's tumor
Ceruminous adenoma
Askin's tumor
Thecoma
Lipoblastoma