Department of Gastroenterology, University Hospital of Wales, Heath Park, Cardiff, United Kingdom.
Eur J Gastroenterol Hepatol. 2012 Jan;24(1):82-3. doi: 10.1097/MEG.0b013e328348d642.
Giant lipomas of the stomach are very rare, accounting for less than 3% of all benign tumors of the stomach. A clear-cut endoscopic differentiation between gastric lipomas and other submucosal neoplasms is not feasible, because routine endoscopic gastric biopsies do not reach the submucosal layer. Gastric submucosal lipomas can cause gastric ulceration as in the case presented below and in rare instances this may in turn promote gastric cancer. Therefore, complete pretreatment diagnostic evaluation is needed. We present a 52-year-old man with a 6-month history of epigastric discomfort, early satiety, decreased appetite, and dyspepsia. His weight was noted to be stable and he was iron deficient (hemoglobin 11.5 g/dl and ferritin of 5 g/dl). His past history included a gastric ulcer found on endoscopy 5 years ago for which he was on omeprazole 40 mg once a day, hypertension, hypercholesterolemia, and diabetes. Clinical examination revealed central obesity with divarification of recti muscles. He underwent a colonoscopy that was normal, and an oesophago-gastro-duodenoscopy that revealed a smooth extrinsic indentation of the anterior aspect of the distal stomach at around 50 cm. Biopsies of this were normal. A computed tomography scan was obtained () that demonstrated a 14 by 15-cm fatty tumor arising from the distal stomach with a couple of 5-mm nodes adjacent to tumor and no distant metastasis representing either a lipoma, liposarcoma or gastrointestinal stromal tumours. He subsequently underwent a subtotal gastrectomy. Macroscopically, the antrum was distorted by a huge submucosal intramural tumor mass. The antral mucosa was stretched over its surface and bore a central 15-mm ulcer surrounded by a raised border (). Microscopic examination confirmed an ulcerated benign submucosal lipoma. Our patient was symptomatic with a large gastric lipoma that necessitated surgical excision. Following surgery his postoperative recovery was uneventful, and he was asymptomatic when reviewed 4 weeks later. This case demonstrates a rare case of gastric lipoma causing gastric epithelial ulceration leading to iron deficiency.
胃巨大脂肪瘤非常罕见,不到胃良性肿瘤的 3%。由于常规内镜胃活检无法到达黏膜下层,因此无法明确区分胃脂肪瘤和其他黏膜下肿瘤。胃黏膜下脂肪瘤可引起胃溃疡,如下文所述,并在极少数情况下,这可能反过来促进胃癌的发生。因此,需要进行完整的术前诊断评估。我们报告了一名 52 岁男性,有 6 个月的上腹部不适、早饱、食欲不振和消化不良史。他的体重稳定,缺铁(血红蛋白 11.5g/dl 和铁蛋白 5g/dl)。他的既往病史包括 5 年前因胃溃疡在内镜下发现,当时他每天服用奥美拉唑 40mg,还有高血压、高胆固醇血症和糖尿病。临床检查显示出中轴性肥胖,腹直肌分离。他进行了结肠镜检查,结果正常,上消化道内镜检查显示在胃远端前壁有一个光滑的外部凹陷,约 50cm 处。对这些部位进行活检显示正常。进行了计算机断层扫描(),显示一个 14x15cm 的脂肪肿瘤起源于胃远端,有几个 5mm 的相邻肿瘤的淋巴结,没有远处转移,代表脂肪瘤、脂肪肉瘤或胃肠道间质瘤。随后他接受了胃大部切除术。大体上,胃窦部因巨大的黏膜下壁内肿瘤而变形。胃窦黏膜伸展在其表面上,有一个中央 15mm 的溃疡,周围有一个凸起的边界()。显微镜检查证实为溃疡性良性黏膜下脂肪瘤。我们的患者有症状,有一个大的胃脂肪瘤,需要手术切除。手术后,他的术后恢复顺利,4 周后复查时无症状。该病例显示了一种罕见的胃脂肪瘤引起胃上皮溃疡导致缺铁的情况。