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- W2022963847 abstract "Dear Editor: Ovarian carcinoma is the most lethal gynecological cancer [1], and the endometrioid type accounts for 7–20 % of all cases [2]. The gastrointestinal stromal tumor (GIST) may mimic ovarian tumors, as reported previously by other authors [3, 4]. We present a case report of a GIST mimicking an ovarian carcinoma. A 67-year-old female underwent a colonoscopy for colon cancer screening. It showed a submucosal lesion, covered with normal appearance mucosa. An endoscopic ultrasonography showed between 4 and 14 cm from the anal margin, with the greatest transverse diameter of 42.5 by 32.7 mm, a heterogeneous lesion, hypoechoic, with slightly irregular borders, originated in the muscular layer; the luminal board counter presented itself closely adjacent to an ovary, where it was identified as a cystic lesion, and a loss of the cleavage plane. We identified a perilesional, oval, hypoechoic adenopathy, with a diameter of 11 by 5.2 mm. We suspected of a GIST or an extraintestinal tumor involving the rectum. An endoscopic ultrasonography (EUS) with fine needle (19G) aspiration with collection of sampling for histology and cytology revealed highgrade undifferentiated neoplasm suggestive of ovarian carcinoma, CD117 negative. She underwent a surgery that confirmed an endometrioid ovarian carcinoma, invading the rectum. Subsequently, the patient has started chemotherapy with carboplatin and paclitaxel and is still on treatment. Besides, there have been reported a case of primary epithelial ovarian carcinoma with gastric metastasis mimicking GIST, but to our best knowledge, there have not been reported an ovarian cancer mimicking a rectal GIST. We emphasize the high accuracy of EUS in the correct characterization of the lesion and its anatomical relations and the possibility of collecting a sample that confirms the diagnosis, allowing a more guided surgery." @default.
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- W2022963847 date "2014-12-16" @default.
- W2022963847 modified "2023-10-16" @default.
- W2022963847 title "Endoscopic ultrasound, GIST, and ovarian cancer" @default.
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- W2022963847 doi "https://doi.org/10.1007/s00384-014-2083-8" @default.
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