A false positive fluorodeoxyglucose positron emission tomography/computed tomography diagnosis of pelvic lymph node recurrence following surgical treatment of Stage 1 endometrial cancer–a case report

A 47 year old patient with a G3, FIGO stage 1A endometrial cancer was treated by hysterectomy. Her two ovaries were conserved because of the pre-operative diagnosis of endocervical cancer. On follow up PET-CT follow up investigation, she had a benign ovarian corpus luteal cyst mistaken as a metastatic pelvic lymph node which was later removed and proven benign histologically. This paper is to raise the clinical awareness of possible false positive PET finding from a benign ovarian cyst, such that a misinterpretation of “recurrence” as in this case can be avoided.