Neuroendocrine Cancer of Rectum Metastasizing to Ovary

Neuroendocrine carcinomas (NECs) are rare malignancies that originate from the hormone-producing cells of the body’sneuroendocrine system. Rectal high grade NEC (HG-NEC) constituting less than 1% of colorectal cancers can cause large ovarianmetastasis that may be the initial presenting complaint. Ovarian Krukenberg tumor from a primary rectal HG-NEC is a veryunusual and exceedingly uncommon differential diagnosis for secondary ovarian malignancy. This case report describes one suchextremely rare case of a woman who had presented to the gynecology department with features suggestive of ovarian malignancyand was ultimately diagnosed to have Krukenberg tumor originating from neuroendocrine cancer of rectum. We felt this is a goodopportunity to spread more light on neuroendocrine neoplasms that are very rare in gynecological practice.