Plexiform angiomyxoid myofibroblastic tumor of stomach:A rare case  

作　　者：Laimas Jonaitis Mindaugas Kiudelis Paulius Slepavicius Lina Poskiene Limas Kupcinskas 

机构地区：[1]Department of Gastroenterology, Medical Academy, Lithuanian University of Health Sciences, 50009 Kaunas, Lithuania [2]Department of Surgery, Medical Academy,Lithuanian University of Health Sciences, 50009 Kaunas, Lithuania [3]Department of Pathological Anatomy, Medical Academy, Lithuanian University of Health Sciences, 50009 Kaunas, Lithuania

出　　处：《World Journal of Gastrointestinal Endoscopy》2016年第18期674-678,共5页世界胃肠内镜杂志（英文版）（电子版）

摘　　要：Plexiform angiomyxoid myofibroblastic tumor(PAMT) is a rare benign mesenchymal tumor of stomach. Rarity of this kind of tumors and scarce review articles may cause underrecognition of this entity and pose a real diagnostic challenge to gastroenterologists, pathologists and surgeons when encountering such patients and differentiating PAMT from other gastric intramural tumors. We report a case of 28-year-old woman, who presented with epigastric pain after meals, iron-deficiency anaemia and weight loss. Upper gastrointestinal endoscopy revealed submucosal tumorlike elevated lesion in the anterior wall of the antrum with intact overlying mucosa. Endoscopic ultrasound showed a 3-cm hypoechoic homogenous mass, originating from the third layer of the gastric wall. Endoscopic ultrasound-guided fine needle aspiration was not informative. Endoscopic buttonhole biopsy was performed to obtain specimens. Following this, the unexpected prolapse of the tumor occurred into the lumen of the stomach, causing gastric outlet obstruction- the biopsy was obtained. Pathomorphological features suggested the diagnosis of PAMT. Gastric resection of the Billroth I type was performed. Diagnosis was confirmed by histological analysis of the surgical specimen.Plexiform angiomyxoid myofibroblastic tumor (PAMT) is a rare benign mesenchymal tumor of stomach. Rarity of this kind of tumors and scarce review articles may cause underrecognition of this entity and pose a real diagnostic challenge to gastroenterologists, pathologists and surgeons when encountering such patients and differentiating PAMT from other gastric intramural tumors. We report a case of 28-year-old woman, who presented with epigastric pain after meals, iron-deficiency anaemia and weight loss. Upper gastrointestinal endoscopy revealed submucosal tumor-like elevated lesion in the anterior wall of the antrum with intact overlying mucosa. Endoscopic ultrasound showed a 3-cm hypoechoic homogenous mass, originating from the third layer of the gastric wall. Endoscopic ultrasound-guided fine needle aspiration was not informative. Endoscopic buttonhole biopsy was performed to obtain specimens. Following this, the unexpected prolapse of the tumor occurred into the lumen of the stomach, causing gastric outlet obstruction - the biopsy was obtained. Pathomorphological features suggested the diagnosis of PAMT. Gastric resection of the Billroth I type was performed. Diagnosis was confirmed by histological analysis of the surgical specimen.

关 键 词：PLEXIFORM angiomyxoid myofibroblastic TUMOR INTRAMURAL Mesenchymal SUBMUCOSAL ANTRUM 

分 类 号：R735.2[医药卫生—肿瘤]