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Updated: Apr 24, 2026
Sentinel Lymph Node Mapping and Biopsy for Endometrial Cancer at Early Stage with Laparoscopy
Published on: August 19, 2021
(18)F-fluorodeoxyglucose positron emission tomography/computed tomography-positive lymph node endometriosis
Makoto Akiyama1, Izumi Suganuma1, Taisuke Mori1
1Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan.
Abstract:
Endometriosis is defined as the presence of endometrium-like tissues at extrauterine sites, most commonly in the abdominal cavity. Lymph node endometriosis is a rare but clinically important type of endometriosis that can mimic lymph node metastasis of a malignant tumor. (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) is a useful tool for diagnosing malignant tumors, although it occasionally shows false positive results in tissues with high metabolic activity caused by severe inflammation. In the present report, we describe a case of lymph node endometriosis that mimicked lymph node metastasis of a malignant tumor and showed a positive result on (18)F-FDG PET/CT. The findings of the present case suggest that lymph node endometriosis could present as swollen lymph nodes with (18)F-FDG PET/CT-positive results and provide important information for determining an appropriate treatment strategy.
