IMR Press / EJGO / Volume 26 / Issue 4 / pii/2005206

European Journal of Gynaecological Oncology (EJGO) is published by IMR Press from Volume 40 Issue 1 (2019). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with S.O.G.

Case Report

False-positive fluorine-18 fluorodeoxy-D-glucose positron emission tomography imaging caused by retained gauze in a woman with recurrent ovarian cancer: A case report

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1 Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Chang Gang Memorial Hospital and Chang Gang University, Taoyuan (Taiwan)
2 Departments of Radiology, Chang Gang Memorial Hospital and Chang Gang University, Taoyuan (Taiwan)
3 Nuclear Medicine, Chang Gang Memorial Hospital and Chang Gang University, Taoyuan (Taiwan)
Eur. J. Gynaecol. Oncol. 2005, 26(4), 451–453;
Published: 10 August 2005

We report a case of a 47-year-old woman with a false-positive [18F]fluoro-2-deoxy-D-glucose (FOG) positron emission tomogra­phy (PET) result caused by retained gauze during resection of liver metastasis for a Stage IV ovarian cancer at primary cytoreduc­tive surgery. She achieved complete remission and remained free of progression for seven years. Owing to elevation of CA-125, computed tomography and PET studies were performed, and both showed two potentially resectable lesions. One was located ventral to the diaphragmatic surface of the left hepatic lobe and the other was around the gauze at the right hepatorenal fossa. During sur­gical intervention, the left supraheptic tumor was excised and the gauze with surrounding granulation was removed. However, the former proved to be recurrent ovarian cancer with the latter proven false-positive. This case demonstrates that PET results should be interpreted with caution in differentiating a benign inflammatory process from malignant abnormalities, especially in regions with a high probability of granulomatous lesions.

False positive
Ovarian neoplasms
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