Objective: The aim of this study was to analyze the CT and pathology features of pulmonary lymphoma and to improve the understanding of this disease. Methods: The CT findings of 23 cases with pulmonary lymphoma were r...Objective: The aim of this study was to analyze the CT and pathology features of pulmonary lymphoma and to improve the understanding of this disease. Methods: The CT findings of 23 cases with pulmonary lymphoma were retrospectively analyzed and correlated with histopathology. Results: Of the 23 cases with pulmonary lymphoma, there were Hodgkin lymphoma (5 cases) and non-Hodgkin lymphoma (18 cases). Multiple lesions were assessed in 16 cases and single lesion in 7 cases. The imaging findings were classified into 3 types: lobar and segmental involvement type (9/23 cases, 39.13%), nodular or mass-like involvement type (8/23 cases, 34.78%) and mixed type (6/23 cases, 26.09%). Air bronchogram sign (14/23 cases, 60.8%), CT angiogram sign (12/23 cases, 52.17%), ground glass opacity nodules (3/23 cases, 13.04%) and lesion across pulmonary lobes (4/23,17.39%) were the characteristic features of pulmonary lymphoma. Conclusion: Relative characteristic CT features of pulmonary lymphoma could be revealed, which shows clinical significance in the diagnosis of the disease.展开更多
Objective: To study CT features of cavitary pulmonary metastases and to investigate the pos- sible relationship between CT features and the pathology of the primary lesions. Methods: CT ?ndings o...Objective: To study CT features of cavitary pulmonary metastases and to investigate the pos- sible relationship between CT features and the pathology of the primary lesions. Methods: CT ?ndings of 131 cavitary metastatic nodules in 40 patients with pathologically-proved pulmonary metastases were retrospectively analyzed. A comparison between CT signs and the pathologic types of the primary tumors was made. Results: Cavitary metastases and multiple solid nodules coexisted in all patients. Cavitary metastases presented as bubble (n=41), irregular (n=33), cystic (n=26) or small circular (n=31) cavities, with even (n=61) or uneven (n=70) thickness of the cavity wall. Of 131 cavitary nodules, diameter less than 15 mm was seen in 44, between 15–25 mm in 66, 25–40 mm in 17 and larger than 40 mm in 4 respectively. And the wall thickness of the cavity below 4 mm, between 4–15 mm and over 15 mm was respectively seen in 69, 44 and 18 metastatic nodules. Cavitary pulmonary metastases mainly occurred in patients whose primary malignancy was squamous cell carcinoma (n=13) or adenocarcinoma (n=22). Both squamous cell carcinoma and adenocarcinoma had its own CT characteristics. The occurrence of cavity bore no relationship to its site in the lung. Conclusion: Cavitary pulmonary metastases carries certain CT features and its occurrence is related to the pathologic type of the primary malignancy.展开更多
OBJECTIVE To assess the accuracy of multi-slice spiral CT （MSCT） with imaging reconstruction in judging central pulmonary vascular involvement from central lung cancer, and to explore its ability to predict the rese...OBJECTIVE To assess the accuracy of multi-slice spiral CT （MSCT） with imaging reconstruction in judging central pulmonary vascular involvement from central lung cancer, and to explore its ability to predict the resectability of lung cancer. METHODS MSCTs were conducted on 48 patients who were diagnosed preoperatively with central lung cancer. Images of pulmonary arteries and veins that might affect Iobectomy or pneumonectomy were reconstructed by means of imaging processing techniques. Then the relationship of the tumor to the vessels was assessed prospectively on both axial CT images and axial CT images plus reconstructed images（CT-RI） in comparison to subsequent pathologic and surgical findings. RESULTS MSCTs were obtained on all 48 patients whom 42 underwent thoracotomy, Iobectomy or pneumonectomy. Compared with the axial CT images, CT-RI was more accurate in judging the relationship of the central pulmonary vessels to the tumor based on subsequent pathologic 78 vessels studied and surgical findings （186 vessels studied）（0.01 〈P〈0.05）. The sensitivity and positive predictive value of unresectability of the vessels were all remarkably higher with CT-RI （P〈0.01）. CONCLUSION MSCT with imaging reconstruction can improve the recognition of neoplastic invasion of central pulmonary vessels. It can be used to predict preoperatively the resectability of central lung cancer and to plan surgery.展开更多
Objective: Large cell carcinoma of lung is a very rare tumor. The clinical characteristics and CT imaging feature of large cell carcinoma of lung were discussed in this article. Methods: Eight cases of large cell carc...Objective: Large cell carcinoma of lung is a very rare tumor. The clinical characteristics and CT imaging feature of large cell carcinoma of lung were discussed in this article. Methods: Eight cases of large cell carcinoma of lung proven by post-operational pathology were retrospectively analyzed from 2000 to 2005 and the literature on it was reviewed. Results: All 8 cases were men. The average age of patients was 64.88 years. Seven cases were smokers. Six cases had obvious chest stuffy, short breath, thrill dry cough. Hereinto 3 cases had cardinal red blood sputum. CT images of large cell carcinoma of lung were represented as single and peripheral mass or nodule. The distribution of large cell carcinoma of lung was short of some rule. 75% focus had clear finitude. One case showed internal calcification and 2 cases showed cavity. They did not show internal fat density. Conclusion: Large cell carcinoma of lung is difficult to be diagnosed before operation. Its CT finding is nonspecific.展开更多
目的探讨肺癌^(18)F-脱氧葡萄糖(FDG)PET 显像的标准摄取值(SUV)与病灶病理类型及肿瘤 T 分期间的关系。方法肺癌患者98例,皆行全身^(18)F-FDG PET 显像。肺癌病灶经2位有经验的医师目测确认后,沿病灶周边勾画感兴趣区,计算 SUV;病灶大...目的探讨肺癌^(18)F-脱氧葡萄糖(FDG)PET 显像的标准摄取值(SUV)与病灶病理类型及肿瘤 T 分期间的关系。方法肺癌患者98例,皆行全身^(18)F-FDG PET 显像。肺癌病灶经2位有经验的医师目测确认后,沿病灶周边勾画感兴趣区,计算 SUV;病灶大小:(长轴+短轴+纵轴)/3。结果肺腺癌组、鳞癌组、小细胞癌组、肺泡癌组及其他类型肺癌组 SUV 分别为4.4±2.1、5.4±2.8、4.4±1.3、2.5±0.7、4.7±1.2,肺泡癌组 SUV 较腺癌和鳞癌组低(P 均<0.05),其他各组间差异无显著性(P 均>0.05)。总体上,病灶的 SUV 与病灶大小无关(r=0.54,P>0.05),但当病灶≤3.0 cm时,肺癌病灶的 SUV 与病灶大小相关(r=0.63,P<0.01)。将病灶按大小分成≤1.5 cm 组、～3.0cm 组、～5.0 cm 组和>5.0 cm 组,各组间的 SUV 分别为2.3±0.8、3.6±1.1、4.8±1.6、5.1±1.5,组间差异有显著性(F=18.8,P<0.01),>3.0 cm 的两组间病灶 SUV 差异无显著性(P>0.05),其他各组间 SUV 差异均有显著性(P<0.01)。16例病灶 SUV<2.5者,主要为腺癌、肺泡癌和病灶<1.5cm 者。结论除肺泡癌外,肺癌病灶大小与病理类型无关;当病灶≤3.0 cm 时,病灶 SUV 与 T 分期有关;病灶越小,SUV 越小。展开更多
文摘Objective: The aim of this study was to analyze the CT and pathology features of pulmonary lymphoma and to improve the understanding of this disease. Methods: The CT findings of 23 cases with pulmonary lymphoma were retrospectively analyzed and correlated with histopathology. Results: Of the 23 cases with pulmonary lymphoma, there were Hodgkin lymphoma (5 cases) and non-Hodgkin lymphoma (18 cases). Multiple lesions were assessed in 16 cases and single lesion in 7 cases. The imaging findings were classified into 3 types: lobar and segmental involvement type (9/23 cases, 39.13%), nodular or mass-like involvement type (8/23 cases, 34.78%) and mixed type (6/23 cases, 26.09%). Air bronchogram sign (14/23 cases, 60.8%), CT angiogram sign (12/23 cases, 52.17%), ground glass opacity nodules (3/23 cases, 13.04%) and lesion across pulmonary lobes (4/23,17.39%) were the characteristic features of pulmonary lymphoma. Conclusion: Relative characteristic CT features of pulmonary lymphoma could be revealed, which shows clinical significance in the diagnosis of the disease.
文摘Objective: To study CT features of cavitary pulmonary metastases and to investigate the pos- sible relationship between CT features and the pathology of the primary lesions. Methods: CT ?ndings of 131 cavitary metastatic nodules in 40 patients with pathologically-proved pulmonary metastases were retrospectively analyzed. A comparison between CT signs and the pathologic types of the primary tumors was made. Results: Cavitary metastases and multiple solid nodules coexisted in all patients. Cavitary metastases presented as bubble (n=41), irregular (n=33), cystic (n=26) or small circular (n=31) cavities, with even (n=61) or uneven (n=70) thickness of the cavity wall. Of 131 cavitary nodules, diameter less than 15 mm was seen in 44, between 15–25 mm in 66, 25–40 mm in 17 and larger than 40 mm in 4 respectively. And the wall thickness of the cavity below 4 mm, between 4–15 mm and over 15 mm was respectively seen in 69, 44 and 18 metastatic nodules. Cavitary pulmonary metastases mainly occurred in patients whose primary malignancy was squamous cell carcinoma (n=13) or adenocarcinoma (n=22). Both squamous cell carcinoma and adenocarcinoma had its own CT characteristics. The occurrence of cavity bore no relationship to its site in the lung. Conclusion: Cavitary pulmonary metastases carries certain CT features and its occurrence is related to the pathologic type of the primary malignancy.
文摘OBJECTIVE To assess the accuracy of multi-slice spiral CT （MSCT） with imaging reconstruction in judging central pulmonary vascular involvement from central lung cancer, and to explore its ability to predict the resectability of lung cancer. METHODS MSCTs were conducted on 48 patients who were diagnosed preoperatively with central lung cancer. Images of pulmonary arteries and veins that might affect Iobectomy or pneumonectomy were reconstructed by means of imaging processing techniques. Then the relationship of the tumor to the vessels was assessed prospectively on both axial CT images and axial CT images plus reconstructed images（CT-RI） in comparison to subsequent pathologic and surgical findings. RESULTS MSCTs were obtained on all 48 patients whom 42 underwent thoracotomy, Iobectomy or pneumonectomy. Compared with the axial CT images, CT-RI was more accurate in judging the relationship of the central pulmonary vessels to the tumor based on subsequent pathologic 78 vessels studied and surgical findings （186 vessels studied）（0.01 〈P〈0.05）. The sensitivity and positive predictive value of unresectability of the vessels were all remarkably higher with CT-RI （P〈0.01）. CONCLUSION MSCT with imaging reconstruction can improve the recognition of neoplastic invasion of central pulmonary vessels. It can be used to predict preoperatively the resectability of central lung cancer and to plan surgery.
文摘Objective: Large cell carcinoma of lung is a very rare tumor. The clinical characteristics and CT imaging feature of large cell carcinoma of lung were discussed in this article. Methods: Eight cases of large cell carcinoma of lung proven by post-operational pathology were retrospectively analyzed from 2000 to 2005 and the literature on it was reviewed. Results: All 8 cases were men. The average age of patients was 64.88 years. Seven cases were smokers. Six cases had obvious chest stuffy, short breath, thrill dry cough. Hereinto 3 cases had cardinal red blood sputum. CT images of large cell carcinoma of lung were represented as single and peripheral mass or nodule. The distribution of large cell carcinoma of lung was short of some rule. 75% focus had clear finitude. One case showed internal calcification and 2 cases showed cavity. They did not show internal fat density. Conclusion: Large cell carcinoma of lung is difficult to be diagnosed before operation. Its CT finding is nonspecific.
文摘目的探讨肺癌^(18)F-脱氧葡萄糖(FDG)PET 显像的标准摄取值(SUV)与病灶病理类型及肿瘤 T 分期间的关系。方法肺癌患者98例,皆行全身^(18)F-FDG PET 显像。肺癌病灶经2位有经验的医师目测确认后,沿病灶周边勾画感兴趣区,计算 SUV;病灶大小:(长轴+短轴+纵轴)/3。结果肺腺癌组、鳞癌组、小细胞癌组、肺泡癌组及其他类型肺癌组 SUV 分别为4.4±2.1、5.4±2.8、4.4±1.3、2.5±0.7、4.7±1.2,肺泡癌组 SUV 较腺癌和鳞癌组低(P 均<0.05),其他各组间差异无显著性(P 均>0.05)。总体上,病灶的 SUV 与病灶大小无关(r=0.54,P>0.05),但当病灶≤3.0 cm时,肺癌病灶的 SUV 与病灶大小相关(r=0.63,P<0.01)。将病灶按大小分成≤1.5 cm 组、～3.0cm 组、～5.0 cm 组和>5.0 cm 组,各组间的 SUV 分别为2.3±0.8、3.6±1.1、4.8±1.6、5.1±1.5,组间差异有显著性(F=18.8,P<0.01),>3.0 cm 的两组间病灶 SUV 差异无显著性(P>0.05),其他各组间 SUV 差异均有显著性(P<0.01)。16例病灶 SUV<2.5者,主要为腺癌、肺泡癌和病灶<1.5cm 者。结论除肺泡癌外,肺癌病灶大小与病理类型无关;当病灶≤3.0 cm 时,病灶 SUV 与 T 分期有关;病灶越小,SUV 越小。
