影像规培生胃肠道测试解析ppt课件精选文档.ppt
,2010,2011,2012,男,上腹痛2个月,胃部是否有病变?请说明依据,Case 1,Stage T4 tumor,胃癌累及左肝,正常胃,粘膜存在,男,56岁,上痛闷痛1个月,请指出胃部病变的部位,你的诊断与依据?,Case 2,胃窦部Ca,溃疡型,Case 3,女,57岁,上腹胀2周,你的诊断与依据?,皮革胃,胃周脂肪间隙模糊,Tumor Stage,T1:tumor invades the lamina propria or submucosaT2:tumor invades the muscularis propria or subserosaT3:tumor penetrates serosa without invasion of adjacent structures T4:tumor invades adjacent structures,男,65岁,上腹闷痛2周,Case 4,你的诊断与依据?,淋巴瘤 胃周脂肪间隙存在,胃窦无梗阻,请说明最可能诊断与依据?主要征象?,Case 12,小肠淋巴瘤动脉瘤样扩张征周围脂肪间隙清楚,无梗阻,Criteria of diagnosis,No palpable superficial lymph nodes are seenChest radiographic findings is normalThe white blood cell count is normalAt laparotomy,the alimentary lesion is predominantly involved,with the lymph node involvement(if any)confined to the drainage area of the involved segment of gutThere is no involvement of the liver and spleen,胃肠道淋巴瘤,起源于胃肠道粘膜固有层和粘膜下层的淋巴组织,常在粘膜固有层或粘膜下层沿器官长轴生长,再向腔内、腔外侵犯.约占结外淋巴瘤30,其中,胃淋巴瘤占50左右非霍奇金淋巴瘤占大多数,霍奇金淋巴瘤罕见.胃肠道非霍奇金淋巴瘤大多数来自B 淋巴细胞,小部分肠道淋巴瘤起源于T 淋巴细胞,极少数来自组织细胞或其他网状细胞.,胃肠道淋巴瘤,以胃壁或肠壁增厚为主要表现粘膜增厚、结节状突起多发溃疡病变范围较广泛病变有一定扩张性和柔软度,梗阻征象较少见,胃肠道淋巴瘤,病灶密度相对较均匀,内部很少坏死或坏死灶较小增强扫描呈轻至中度强化病变周围脂肪间隙大多清晰,向周围侵犯较少腹腔或腹膜后淋巴结肿大多见,女,36岁,反复血便1年,请说明病变的部位、诊断与依据,Case 5,空肠间质瘤,男,48岁,中下腹痛并血便1周,CT发现回肠占位,Case 8,你的诊断及依据?,回肠恶性间质瘤,女,37岁,上腹痛3个月,Case 9,请说明你的诊断?良、恶性判断依据?,胃窦恶性间质瘤,肝转移,肿 瘤 起 源 于 固 有 肌 层,胃肠间质瘤,Express the KIT protein(CD117,stem cell factor receptor)Defined as spindle cell,epithelioid,or pleomorphic mesenchymal tumors,GIST,肿块常较局限,境界多较清楚恶性者常较大(5cm)可向腔内或腔外生长出血、坏死或囊变多见,可见钙化增强扫描病灶呈明显强化(富血供)常无腹腔淋巴结肿大,病 史,女性,26岁,以“右上腹痛2周加剧1天”为主诉入院。患者缘于2周前无明显诱因出现右上腹部疼痛,疼痛呈持续性锐痛,疼痛未向他处放射,稍感恶心,无呕吐、无畏冷、发热,无排柏油样便,无尿频、尿急、尿痛。在福州某大医院诊断为“浅表性胃炎”、“慢性胆囊炎”。服药无明显好转。1天前疼痛加剧,就诊我院急诊科,查血、尿淀粉酶均升高,拟诊:急诊胰腺炎。急诊行腹部CT检查。,Case 6,最可能的诊断 是什么?,SMV血栓、肠管缺血坏死、穿孔、腹膜炎、腹水,血运性肠梗阻,由于肠系膜血管栓塞或血栓形成,使肠管血运障碍,继而发生肠麻痹而使肠内容物不能运行。因肠系膜血管急性血循环障碍,导致肠管缺血坏死、穿孔,严重者死亡,正常小肠CT成像,男,40岁,腹痛并肛门停止排气排便4天,肠系膜上静脉血栓形成,A 27-year-old male presented with abdominal pain of 10 hours duration,Target sign,肠系膜上静脉血栓形成,血运性肠梗阻“三联征”,节段性肠壁增厚:密度增高或减低,肠腔扩张不明显SMV 密度改变:与腹主动脉或下腔静脉比较,或增高,或减低,是诊断的关键腹腔积液,如何判断肠管异常?肠壁3mm肠腔2.5cm异常强化共3点如何判断肠梗阻时肠管是否缺血?,Case 7,肠壁环形增厚肠壁水肿:“靶征”肠壁密度增高肠壁强化减弱肠系膜血管充血,Indications of ischemia,Indications of ischemia,肠系膜积液游离腹水肠壁、肠系膜或门脉系统内气体,男,45岁,腹痛、呕吐伴肛门停止排气、排便1周,Case 10,请说明最可能诊断与依据?主要征象?,粘连性肠梗阻fat notch sign,女,4岁,反复呕血、腹痛9天,Case 11,请说明最可能诊断与依据?,化脓性阑尾炎并坏死穿孔及脓肿形成 阑尾结石,阑尾炎的CT征象,7 mm Appendiceal wall thickening and enhancement An appendicolith Circumferential or focal apical cecal thickening Pericecal fat stranding Adjacent bowel wall thickening Free peritoneal fluid Mesenteric lymphadenopathy Intraperitoneal phlegmon,or abscess,阑尾炎合并穿孔的征象,增强扫描阑尾壁局限性缺损阑尾周围积液盲肠周围蜂窝织炎阑尾腔外结石阑尾周围气影,Dream is what makes you happy,even when you are just trying.梦想就是一种让你感到坚持就是幸福的东西。,Never frown,because you never know who is falling in love with your smile.别愁眉不展,因为你不知道谁会爱上你的笑容。,