Torsion Ovary, an Unusual Presentation of Carcinoma Appendix Detected in Whole-Body F-18 2-Fluoro 2-deoxy Glucose Positron Emission Tomography/Computed Tomography Scan

Torsion ovary is one of the common emergencies in gynecology requiring surgery. Torsion ovary is generally caused by cystic lesions of ovary and benign tumors. Malignant tumors rarely present as torsion ovary. Krukenberg tumor presenting as torsion ovary is very rare with only a few case reports described in literature. Stomach is the most common primary site (70%) followed by colorectal, breast, lung, contralateral ovary, pancreatic, cholangiocarcinoma, and gallbladder carcinomas. Krukenberg tumor with primary in appendix is relatively rare. Here, we are presenting an unusual case of mucinous carcinoma appendix with Krukenberg tumor presenting as unilateral torsion ovary, demonstrating the role of whole-body F¹⁸ 2-Fluoro 2-deoxyglucose positron emission tomography/computed tomography scan in identifying the primary.