Despite the above-mentioned strength, immunohistochemical and molecular studies were not performed for diagnosis in the current study, though identification of TP53 mutation in high-grade serous carcinomas and demonstration of both CK7 and CK20 positivity in primary mucinous ovarian carcinomas are vital for confirmative diagnosis of these tumors [9, 10]. The gene discussed is KRT7; the disease is ovarian mucinous adenocarcinoma.