Since CDX2 is generally considered as a marker of intestinal neuroendocrine tumors (we were unable to immune-localize CDX2 in the strumal carcinoids of our series), it also remains questionable whether this case constitutes a genuine metastatic strumal carcinoid or rather represents a case of metastatic (intestinal) neuroendocrine tumor in an ovarian teratoma with thyroid tissue. The gene discussed is CDX2; the disease is carcinoid tumor.