胸腺瘤的影像断及分期.ppt

; 胸腺瘤影像诊断及分期; 流行病学; 流行病学; 胸腺原发上皮来源肿瘤：胸腺瘤和胸腺癌 胸腺瘤最常见 ; 胸腺瘤影像诊断及分期; 病理特征; 病理特征; 病理特征; 病理特征;胸腺瘤的WHO病理分类表;注：a. A型；b. B1型；c. B2型；d. B3型; 病理分类局限性; 病理分类局限性; 病理分类主要作用; 胸腺瘤影像诊断及分期; 临床特征; 临床特征; 临床特征; 胸腺瘤影像诊断及分期;Masaoka-koga分期及临床处理原则; 胸腺瘤的治疗; 胸腺瘤的治疗; 胸腺瘤的治疗; 胸腺瘤影像诊断及分期;; 影像学的作用; 影像学的作用; 影像学的作用; 影像学的作用;正常小儿胸腺;女性，23岁，尤文氏肉瘤患者。a. 化疗开始前 b. 化疗结束后3个月，胸腺增生;女性，25岁，胸腺增生伴重症肌无力 a.同相位T1WI；b.反相位T1WI; 胸腺瘤X线表现; 进展期X线征象;侵袭性胸腺瘤 男，55岁，无明显临床症状;膈神经受累（右膈??抬高）男，60岁;胸膜转移 女，36岁; CT表现; CT表现; CT表现; 胸腺瘤钙化; 血管受侵征象; 胸膜播散; 肿瘤侵袭性依据; 进展期征象;以下表现提示胸腺瘤可能性较小…;Stage I in MDCT and Masaoka staging system;WHO type A ，Masaoka stage I ;stage II in MDCT and Masaoka staging system;stage Ⅲ in MDCT and Masaoka staging system;stage Ⅲ in MDCT and Masaoka staging system;stage Ⅲ in MDCT and Masaoka staging system;stage Ⅲ in MDCT and Masaoka staging system;stage Ⅳ in MDCT and Masaoka staging system; MRI表现; MRI表现;WHO type B1 thymoma in a 47-year-old woman with left-sided neck pain. (a) Axial T1-weighted MR image shows a rounded intermediate-signal-intensity mass (M) in the anterior mediastinum. (b) Axial fat-suppressed T2-weighted MR image demonstrates a 6-cm anterior mediastinal mass (M) with high signal intensity at the level of the ascending aorta (Ao). The mass was diagnosed as a lymphocyte-rich WHO type B1 thymoma at resection. ;Stage III thymoma in a 52-year-old man with chest pain and dyspnea. (a) Axial double-inversion-recovery MR image demonstrates a 4-cm lobulated mass that abuts the pericardium (arrow). (b) Contrast-enhanced multiplanar double-inversion-recovery short-axis MR image demonstrates tumor invasion of the pericardium (arrow) and epicardial fat (arrowhead), findings that were confirmed at thymectomy and pericardial resection.;胸腺瘤Ⅲ期 女性，54岁，头面部肿胀，肿瘤侵犯上腔静脉，包绕右冠状动脉; MRI表现; MRI表现;Cystic thymoma in an asymptomatic 35-year-old woman. Coronal T2- weighted MR image shows an anterior mediastinal septate cystic thymoma with a septated soft-tissue nodule (arrow). ; MRI表现; MRI表现;