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Yang Q, Xu J, Zhou J, Liu Q, Mai Z, Xie H, Ban X, Liu L, Zhang R. Feasible CT features to distinguish incidental rib enhancement from sclerotic metastasis in patients with malignancies. Skeletal Radiol 2024:10.1007/s00256-024-04609-3. [PMID: 38363418 DOI: 10.1007/s00256-024-04609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/17/2024]
Abstract
OBJECTIVE To investigate the CT features of incidental rib enhancement (RE) and to summarize the CT characteristics for distinguishing the RE from sclerotic metastasis (SM) in patients with malignancies. MATERIAL AND METHODS This retrospective observational study enrolled 79 patients with RE (involved 133 ribs) during October 2014 and December 2021. Another 53 patients with SM (160 SM) in the same period were selected randomly for comparison. The location, enhancement patterns of RE were reviewed. The CT values of RE regions and SM were measured and statistically analyzed. RESULTS Most REs (70 patients, 88.6%) were in the 1st to 6th ribs. 50 patients had solitary RE and 29 with multiple REs in a regional distribution. All the REs were closely connected to the intercostal venous plexus (ICVP) ipsilateral to the injection site. No visible abnormalities on unenhanced scans were detected in all REs. One hundred and twenty REs (90.2%) had nodular/patchy enhancement. The CT value of RE regions in the venous phase was lower than that in the arterial phase (589.8 ± 344.2 HU versus 1188.5 ± 325.3 HU, p < 0.001). During the venous phase, most REs (125, 94.0%) shrank or disappeared. SM appeared similar on both contrast-enhanced and unenhanced scans in terms of shape and CT values. CONCLUSION The RE demonstrated characteristic CT features. The manifestations of nodular/patchy enhancement in the arterial phase, decreased density and shrinkage or disappearance during the venous phase, and no abnormality on unenhanced scans, as well as a close connection with the ICVP, may help differentiate RE from SM.
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Affiliation(s)
- Qiuxia Yang
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Jiahui Xu
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Jianyao Zhou
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Qiulin Liu
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Zhijun Mai
- Department of Radiology, Cancer Hospital Chinese Academy of Medical Science, Shenzhen Center, Shenzhen, China
| | - Hui Xie
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Xiaohua Ban
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Lizhi Liu
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Rong Zhang
- Department of Medical Imaging Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, People's Republic of China.
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Song D, Park YW. Brachio-azygos transthoracic arteriovenous grafts for hemodialysis patients with bilateral central venous obstruction: A small case series. J Vasc Access 2021; 24:11297298211058580. [PMID: 34789037 DOI: 10.1177/11297298211058580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND It is difficult to find a reliable outflow vein for vascular access in hemodialysis patients with bilateral central venous obstruction. The lower extremity veins are currently used as the most common alternative veins to make a new vascular access. However, in patients not amenable to make lower extremity access, intrathoracic vein should be considered as an outflow vein, but there are limitations in its use due to postoperative complications. METHODS We introduce a series of cases that underwent arteriovenous graft operation using an intrathoracic vein, the azygos arch, as an outflow vein. Brachio-azygos transthoracic arteriovenous graft is a surgical procedure that anastomoses the azygos arch and the brachial artery with 7 mm ringed polytetrafluoroethylene graft via lateral thoracotomy without median sternotomy. RESULTS The chest tubes of the patients were removed on the third postoperative day and they discharged within a week. About 1 month later, hemodialysis was initiated through the BATAVG, and it has been used without access dysfunction. CONCLUSION Brachio-azygos transthoracic arteriovenous grafts were performed using the azygos arches without major complications. The azygos arch can be a good alternative outflow vein to make a new vascular access for hemodialysis patients with bilateral central venous obstruction.
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Affiliation(s)
- Dan Song
- Department of General Surgery, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Young Woo Park
- Department of Thoracic and Cardiovascular Surgery, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
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Kamper L, Altenburg A, Das M, Haage P. [Diagnostics and endovascular treatment of venous diseases]. Radiologe 2017; 57:765-778. [PMID: 28808735 DOI: 10.1007/s00117-017-0284-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In venous disease, acute thromboses and chronic venous insufficiency have the highest health economics relevance. Duplex sonography is the first line diagnostic assessment tool, while cross-sectional imaging is employed as a supplementary method. Due to the availability and examination times computed tomography is preferred in the emergency setting and is supplemented by magnetic resonance imaging (MRI) for specific questions. Endovascular treatment procedures are increasingly becoming available in addition to classical conservative treatment methods.
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Affiliation(s)
- L Kamper
- Zentrum für Radiologie, HELIOS-Universitätsklinikum Wuppertal, Universität Witten/Herdecke, Heusnerstr. 40, 42283, Wuppertal, Deutschland.
| | - A Altenburg
- Zentrum für Radiologie, HELIOS-Universitätsklinikum Wuppertal, Universität Witten/Herdecke, Heusnerstr. 40, 42283, Wuppertal, Deutschland
| | - M Das
- Klinik für Diagnostische und Interventionelle Radiologie, HELIOS St. Johannes Klinik Duisburg, An der Abtei 7-11, 47166, Duisburg, Deutschland
| | - P Haage
- Zentrum für Radiologie, HELIOS-Universitätsklinikum Wuppertal, Universität Witten/Herdecke, Heusnerstr. 40, 42283, Wuppertal, Deutschland
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Abstract
A major challenge in the management of hemodialysis patients is central venous stenosis and obstruction. Placement of central venous catheters has been shown to result in a high incidence of central venous stenosis or obstruction. There has been extensive literature on the treatment of this important and prevalent problem. Treatment options include percutaneous balloon angioplasty and bare metal stents. Unfortunately, all the available treatment options have variable rates of patency, requiring repeated intervention. More recently, covered stents have been mentioned in the literature for the treatment of central venous stenosis and obstruction. There is very little data to date, and further randomized controlled trials will be needed to compare the efficacy of percutaneous balloon angioplasty, bare metal stents, and covered stents. It appears prevention of this difficult problem is paramount, by limiting use of central venous catheters.
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Affiliation(s)
- Sanjoy Kundu
- Department of Medical Imaging, Scarborough Hospital, Toronto, Ontario, Canada
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