[18F]-Fluorodeoxyglucose positron emission tomography/computed tomography is capable of detecting ovarian cancer recurrence in symptomatic patients with normal CA-125 levels and, in this setting, has slightly better sensitivity than CECT and can be considered as the frontline modality for all such patients.

Endometrial carcinoma is the most common female pelvic malignancy and the seventh most common neoplasm worldwide, with the highest incidence in North America and Europe. Endometrial cancer is staged according to the International Federation of Gynecology and Obstetrics surgical system. Clinical estimation of stage, however, can be inaccurate in more than 20%, and therefore, preoperative imaging of the disease may assist in planning the optimal course of treatment. For example, cross-sectional imaging, especially magnetic resonance imaging (MRI), may detect gross myometrial extension or extension of tumor to the cervical stroma, which can alter management and therefore help in preoperative surgical planning. This issue is increasingly relevant as less invasive surgical techniques, such as laparoscopic surgeries, are becoming more commonplace for lower stage cancers. Several imaging techniques such as MRI, computed tomography, and transvaginal ultrasound have been used as tools for preoperative staging of endometrial cancer. Currently, MRI is the most widely used modality for preoperative planning. This article discusses the use of MRI in diagnosis, staging, and detection of endometrial cancer and treatment of recurrent disease.

Magnetic resonance imaging depicts the morphological details of the female pelvis and is useful for evaluating both benign and malignant cervical masses. Clinical assessment of the extent of cervical cancer is crucial in determining the optimal treatment strategy, but clinical staging by itself has limitations. Clinical staging, as defined by FIGO (International Federation of Gynecologic Oncology), is based on the findings of physical examination, lesion biopsies, chest radiography, cystoscopy, and renal sonography and can be erroneous, depending on the stage of the disease, by 16% to 65%. The prognosis of cervical cancer is determined not only by stage, but also by nodal status, tumor volume, and depth of invasion, none of which are included in the FIGO guidelines. Magnetic resonance imaging has been described as the most accurate, noninvasive imaging modality in staging cervical carcinoma. This review outlines the magnetic resonance features of normal cervix, primary disease (by stage), and recurrent disease and discusses the role of magnetic resonance imaging in staging and clinical decision making.

Extragastric disease alters the prognosis and treatment options available to patients with gastric cancer. Familiarity with the stomach's embryology will help the radiologist understand its anatomy and, therefore, the patterns of regional spread of gastric cancer. The location of the primary tumor can predict involvement of specific perigastric ligaments because locoregional spread of gastric cancer occurs along the arteries, veins, nerves, and lymphatic channels within those ligaments. Thus, identifying the location of the primary tumor can potentially improve patient outcomes.

Knowledge of the imaging features of intrabiliary invasion by colorectal liver metastasis improves the quality of preoperative staging and is crucial in an era in which nonanatomic wedge resection and radiofrequency ablation are routinely performed.