腹腔間隙影像解剖ppt課件-資料下載頁(yè)
2025-01-05 17:53本頁(yè)面
【正文】 22/2/2 add footer here (go to view menu and choose header) 47 Peritoneal Neoplasms Benign Tumors These lesions include lipomas, neurofibromas, and other mesenchymal tumors. 39yearold woman with neurofibromatosis type 1 2022/2/2 add footer here (go to view menu and choose header) 48 Mesenteric cyst 2022/2/2 add footer here (go to view menu and choose header) 49 Malignant Tumors Peritoneal metastases Peritoneal carcinomatosis is typically manifested by enhancing peritoneal nodules or a rind of enhancing perihepatic soft tissue. 44yearold woman with metastases from ovarian cancer 2022/2/2 add footer here (go to view menu and choose header) 50 Malignant Tumors Peritoneal metastases 2022/2/2 add footer here (go to view menu and choose header) 51 Peritoneal pseudomyxoma 2022/2/2 add footer here (go to view menu and choose header) 52 Malignant Tumors CT scan shows gastric carcinoma invading the gastrocolic ligament . 2022/2/2 add footer here (go to view menu and choose header) 53 Malignant Tumors A， Small bowel mesentery in a patient with nonHodgkin lymphoma. B， Small bowel mesentery in a patient with carcinomatosis. CT scan shows masses in the small bowel mesentery (M) and right paracohic gutter (*). 2022/2/2 add footer here (go to view menu and choose header) 54 Malignant Tumors Peritoneal mesothelioma 58yearold man with mesothelioma. A–B, GRE outofphase image (A) and enhanced T1weighted image (B ) show enhancing large mass (arrows, A and B), representing mesothelioma,which is entangling bowel loops. 2022/2/2 add footer here (go to view menu and choose header) 55 Malignant Tumors Mesenteric carcinoid Mesenteric carcinoid tumors are usually seen as nodular masses associated with mesenteric stranding. Enhancing mass (arrows) is seen on portal venous phase images, with involvement of draining veins 2022/2/2 add footer here (go to view menu and choose header) 56 要 點(diǎn) ? 炎癥或腫瘤性病變可通過(guò)橫結(jié)腸系膜到達(dá)結(jié)腸，如胰腺病變易通過(guò)橫結(jié)腸系膜累及橫結(jié)腸下面，而胃部疾病則易累及橫結(jié)腸上面。 ? 胃部腫瘤易沿著肝胃韌帶侵犯，因此常常可以在肝胃韌帶的脂肪組織中看到結(jié)節(jié)狀的轉(zhuǎn)移病灶；胃惡性腫瘤也可沿該韌帶侵犯肝臟，如侵犯 Glisson’ s 系統(tǒng)。 ? 肝十二指腸韌帶為肝胃韌帶的游離邊，膽胰疾病可沿此途徑蔓延。 ? 胰尾、脾和胃部疾病可沿胃脾韌帶蔓延。 2022/2/2 add footer here (go to view menu and choose header) 57 ? 最常見(jiàn)的腹膜腫瘤為繼發(fā)于卵巢、結(jié)腸、胃及胰腺的轉(zhuǎn)移性腫瘤。其影像特征包括： (1) 腹膜增厚伴結(jié)節(jié)影； (2) 腹水 。 (3) 分隔性囊性積液 。 (4)小腸壁增厚 。 (5) 網(wǎng)膜增厚，呈餅征。 ? 常見(jiàn)的網(wǎng)膜病變有轉(zhuǎn)移、間皮瘤和結(jié)核等，網(wǎng)膜囊性病變多見(jiàn)于原發(fā)囊腫、胰腺炎、膿腫、血腫或壞死的腫瘤病變。 ? 腹膜假性粘液瘤往往繼發(fā)于闌尾或卵巢的粘液腺瘤或腺癌，呈凝膠樣，肝周可見(jiàn)扇貝形壓跡。 要 點(diǎn)
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