A 55-year-old Caucasian woman was admitted to our hospital complaining of abdominal pain. Her past medical history was not significant and she had no previous history of abdominal trauma. On physical examination a firm, not-fixed mass about 20 cm in diameter was found in the upper abdomen. Standard blood tests and chest x-rays were normal. Carcinoembryonic antigen, carbohydrate antigen 19-9, and alpha-fetoprotein levels were normal with only CA125 being increased at 201.9 U/mL (normal, <35 U/mL). Upper gastrointestinal endoscopy showed an extrinsic impression on greater curvature of the stomach with no intraluminal abnormality. Colonoscopy was normal. Abdominal computed tomography showed a solid, large mass occupying the entire upper abdomen with heterogeneous enhancement and some calcified areas. Neither ascites nor uterine or ovarian abnormalities were detected. At laparotomy, a huge tumor originating from the greater omentum was found with no peritoneal spreading or invasion of neighbouring organs (Fig 1).
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机译：一名55岁的白人妇女因腹痛入院。她过去的病史并不重要，她也没有腹部外伤史。经身体检查，在上腹部发现直径约20厘米的牢固的，未固定的肿块。标准血液检查和胸部X光检查均正常。癌胚抗原，碳水化合物抗原19-9和甲胎蛋白水平正常，只有CA125在201.9 U / mL时升高（正常，<35 U / mL）。上消化道内窥镜检查显示出胃外曲率，无管腔内异常。结肠镜检查正常。腹部计算机断层扫描显示实性肿块占整个上腹部，异质性增强，并有钙化区域。既没有检测到腹水，也没有检测到子宫或卵巢异常。在剖腹手术中，发现了一个大网膜引起的巨大肿瘤，没有腹膜扩散或邻近器官浸润（图1）。
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