Krukenberg adenocarcinoma of the ovary can occur as a result of metastases from all except-

Metastatic gastrointestinal & breast neoplasm to ovary are referred to as krukenberg tumors and are characterized by bilateral metastasis composed of mucin-producing signet-ring cells. The primary sites are → Stomach (most common), Pancreas, Colon, Gall bladder, Breast.