Özet:

Purpose: The purpose of this study is to assess the effectiveness of the preoperative positron emission tomography/computer tomography (PET/BT) in the detection of lymph nod metastasis in gynecological malignities. Method: The University of Health Sciences, Prof. Dr. Cemil Taşcıoğlu City Hospital, Women's Diseases and Birth Clinic, included 78 patients who operated with the cause of gynecological cancer between January 2016 and November 2017. From the hospital data system and patient files, the patient’s age, menopausal status, clinical diagnoses, final pathological reports and PET/BT findings were reached. In the final pathology report, the histological type of the tumor, pelvic and/or paraaortic lymph nod adhesions, the pathological adhesions monitored in PET/BT lymph nodes and the primary tumor's maximum standard adhesion value (SUVmax) were recorded. Results: 42 of the 78 patients surveyed were endometrium cancer, 10 were uterine sarcoma, 14 were cervical cancer and 12 were over cancer. In the group of patients diagnosed with endometrium cancer, PET/BT’s sensitivity, specificity, accuracy, positive predictive value and negative predictive value in predicting lymph nod metastasis were respectively 54.5%, 96.7%, 85.7%, 85.7 and 85.7%. In the sarcoma of the uterus, these values were 100%, 89.9%, 90%, 50% and 100% respectively. Cervical cancer was 0.92.3 percent, 85.7 percent, 0 percent and 92.3 percent and over cancer was 62.5 percent, 75.6 percent, 66.7 percent, 83.3 percent and 50 percent. When the entire patient group was studied, these values were 57.1, 92.9, 83.3, 75 and 85.4 per cent, respectively. The best success in the PET/BT diagnosis tests was achieved in uterine sarcoma. In addition, our study found that the average SUVmax values from metabolic parameters were associated with lymph nod metastasis in over cancer only, and that it was not meaningful in other gynecological malignities.

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