scholarly journals Comparison of Adrenal Tumor Size in Ultrasound Examinations with and without the Use of a Contrast Agent

Medicina ◽  
2019 ◽  
Vol 55 (5) ◽  
pp. 165
Author(s):  
Mateusz Winder ◽  
Wojciech Spychałowicz ◽  
Aleksander Owczarek ◽  
Jerzy Chudek
Keyword(s):  
Tumor Size ◽  
Adrenal Tumor ◽  
Three Dimensional ◽  
Adrenal Tumors ◽  
Tumor Vascularization ◽  
Mri Scan ◽  
Contrast Enhanced ◽  
Median Volume ◽  
Doppler Techniques ◽  
Adrenal Volume

Background and objectives: Patients diagnosed with incidentally found adrenal tumors (incidentaloma) that do not meet the criteria for surgical treatment require follow-ups with repeated imaging. The aim of this study is to compare the accuracy of the measurements of the adrenal tumor size in ultrasound (US) with and without contrast in comparison to computed tomography (CT) or magnetic resonance (MRI). Further, this study attempts to answer the question of whether contrast-enhanced ultrasound (CEUS) can improve imaging accuracy and replace CT/MRI in the monitoring of patients with adrenal tumors. Materials and Methods: The retrospective analysis included 79 adult patients with adrenal incidentalomas not exceeding a dimension of 6 cm who underwent a CT or MRI scan, US, and CEUS with the use of SonoVue in two-dimensional (2D) and three-dimensional (3D) projections and Doppler techniques. Tumor vascularization in CEUS was classified as follows: peripheral, peripheral-central, central, or poor. Results: Of 79 adrenal tumors, 48.1% showed peripheral, 29.1% showed poor, 21.5% showed peripheral-central, and only 1.3% showed central vascularization. The median volume of tumors detected with CEUS (69.9 cm3) was significantly higher than with US (44.5 cm3) and CT or MRI (57.1 cm3). The relative error of the adrenal volume with CEUS compared with CT or MRI was significantly higher than with standard US, regardless of the type of tumor vascularization. Conclusions: CEUS does not improve the accuracy of adrenal tumor size assessment regardless of the type of vascularization.

scholarly journals Laparoscopic transperitoneal adrenalectomy in the large adrenal tumor from single center experience

BMC Surgery ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Thanasit Prakobpon ◽  
Apirak Santi-ngamkun ◽  
Manint Usawachintachit ◽  
Supoj Ratchanon ◽  
Dutsadee Sowanthip ◽  
...  
Keyword(s):  
Tumor Size ◽  
Adrenal Tumor ◽  
Intraoperative Complications ◽  
Perioperative Outcomes ◽  
Adrenal Tumors ◽  
Transfusion Rate ◽  
Intraoperative Complication ◽  
Estimated Blood Loss ◽  
Group 2 ◽  
Laparoscopic Transperitoneal

Abstract Background The role of laparoscopic adrenalectomy (LA) in a large adrenal tumor is controversial due to the risk of malignancy and technical difficulty. In this study, we compared the perioperative outcomes and complications of LA on large (≥ 6 cm) and (< 6 cm) adrenal tumors. Methods We retrospectively reviewed all clinical data of patients who underwent unilateral transperitoneal LA in our institution between April 2000 and June 2019. Patients were classified by tumor size into 2 groups. Patients in group 1 had tumor size < 6 cm (n = 408) and patient in group 2 had tumor size ≥ 6 cm (n = 48). Demographic data, perioperative outcomes, complications, and pathologic reports were compared between groups. Results Patients in group 2 were significant older (p = 0.04), thinner (p = 0.001) and had lower incident of hypertension (p = 0.001), with a significantly higher median operative time (75 vs 120 min), estimated blood loss (20 vs 100 ml), transfusion rate (0 vs 20.8%), conversion rate (0.25 vs 14.6%) and length of postoperative stays ( 4 vs 5.5 days) than in group 2 (all p < 0.001). Group 2 patients also had significantly higher frequency of intraoperative complication (4.7 vs 31.3%; adjust Odds Ratio [OR] = 9.67 (95% CI 4.22–22.17), p-value < 0.001) and postoperative complication (5.4 vs 31.3%; adjust OR = 5.67 (95% CI 2.48–12.97), p-value < 0.001). Only eight (1.8%) major complications occurred in this study. The most common pathology in group 2 patient was pheochromocytoma and metastasis. Conclusions Laparoscopic transperitoneal adrenalectomy in large adrenal tumor ≥ 6 cm is feasible but associated with significantly worse intraoperative complications, postoperative complications, and recovery. However, most of the complications were minor and could be managed conservatively. Careful patient selection with the expert surgeon in adrenal surgery is the key factor for successful laparoscopic surgery in a large adrenal tumor. Trial registration: This study was retrospectively registered in the Thai Clinical Trials Registry on 02/03/2020. The registration number was TCTR20200312004.

Partial Fat-saturated Contrast-enhanced Three-dimensional MR Angiography Compared with Non-Fat-saturated and Conventional Fat-saturated MR Angiography

Radiology ◽  
2000 ◽  
Vol 216 (1) ◽  
pp. 298-303 ◽  
Author(s):  
Paul R. Hilfiker ◽  
Robert J. Herfkens ◽  
Steve G. Heiss ◽  
Marcus T. Alley ◽  
Dominik Fleischmann ◽  
...  
Keyword(s):  
Mr Angiography ◽  
Three Dimensional ◽  
Contrast Enhanced

scholarly journals Use of Contrast-Enhanced Ultrasound with Sonazoid for Evaluating the Radiotherapy Efficacy for Hepatocellular Carcinoma

Diagnostics ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 486
Author(s):  
Akihiro Funaoka ◽  
Kazushi Numata ◽  
Atsuya Takeda ◽  
Yusuke Saigusa ◽  
Yuichirou Tsurugai ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Retrospective Study ◽  
Local Recurrence ◽  
Tumor Size ◽  
Size Reduction ◽  
Contrast Enhanced Ultrasound ◽  
Tumor Vascularity ◽  
Contrast Enhanced

Radiotherapy is one of the available curative therapies for hepatocellular carcinoma (HCC). We investigate the use of contrast-enhanced ultrasound using Sonazoid (SCEUS) in evaluating the efficacy of radiotherapy for HCC. We enrolled 59 patients with 59 HCCs in this retrospective study. Tumor size and tumor vascularity were evaluated using SCEUS before and 1, 3, 7, 10, and 13 months after radiotherapy. The median follow-up period was 44.5 months (range: 16–82 months). Of the HCCs, 95% (56/59) had no local recurrence, while 5% (3/59) did. At 13 months after radiotherapy, in cases with no local recurrence, SCEUS showed a reduction in tumor vascularity in all cases, while tumor size reduction (>30% reduction, compared with pre-radiotherapy) was observed in 82.1% (46/56). In all three cases of local recurrence, vascularity and tumor size reduction were not observed during the follow-up period and residual HCCs were demonstrated pathologically. Compared with cases with local recurrence, tumor size reduction and reduction in tumor vascularity (p < 0.001) were significantly greater in cases with no local recurrence at 13 months after radiotherapy. SCEUS may be useful in evaluating radiotherapy efficacy for HCC.

scholarly journals Ultrasound-guided implantation of radioactive 125I seed in radioiodine refractory differentiated thyroid carcinoma

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Wei Chen ◽  
Yu kun Luo ◽  
Ying Zhang ◽  
Qing Song ◽  
Jie Tang
Keyword(s):  
Thyroid Carcinoma ◽  
Reduction Rate ◽  
Differentiated Thyroid Carcinoma ◽  
Comprehensive Treatment ◽  
Efficacy And Safety ◽  
Ultrasound Guided ◽  
Contrast Enhanced ◽  
The Us ◽  
Median Volume

Abstract Background Treatment for radioiodine refractory differentiated thyroid carcinoma (RR-DTC) is challenging. The purpose of this study was to assess the efficacy and safety of ultrasound-guided implantation of radioactive 125I-seed in radioiodine refractory differentiated thyroid carcinoma. Methods Thirty-six cervical metastatic lymph nodes (CMLNs) diagnosed with RR-DTC from 18 patients were enrolled in this retrospective study. US and contrast-enhanced ultrasound (CEUS) examinations were performed before implantation. Follow-up comprised US, CEUS, thyroglobulin (Tg) level and routine hematology at 1–3, 6, 9 and 12 months and every 6 months thereafter. The volumes of the nodules were compared before implantation and at each follow-up point. The volume reduction rate (VRR) of nodules was also recorded. Results The median volume of the nodules was 523 mm3 (148, 2010mm3) initially, which decreased significantly to 53mm3 (0, 286mm3) (P < 0.01) at the follow-up point of 24 months with a median VRR as 95% (86,100%). During the follow-up period (the range was 24–50 months), 25 (69%) nodules had VRR greater than 90%, of which 12 (33%) nodules had VVR ≈ 100% with unclear structures and only 125I seed images were visible in the US. At the last follow-up visit, the serum Tg level decreased from 57.0 (8.6, 114.8) ng/ml to 4.9 (0.7, 50.3) ng/ml, (P < 0.01). Conclusion US-guided 125I seed implantation is safety and efficacy in treating RR- DTC. It could be an effective supplement for the comprehensive treatment of thyroid cancer.

scholarly journals A Voxel-Map Quantitative Analysis Approach for Atherosclerotic Noncalcified Plaques of the Coronary Artery Tree

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Ying Li ◽  
Wei Chen ◽  
Kaijun Liu ◽  
Yi Wu ◽  
Yonglin Chen ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Three Dimensional ◽  
Coronary Intervention ◽  
Quantitative Information ◽  
Atherosclerotic Plaques ◽  
Anatomical Location ◽  
Contrast Enhanced ◽  
Percutaneous Coronary ◽  
Map Analysis ◽  
Coronary Artery Tree

Noncalcified plaques (NCPs) are associated with the presence of lipid-core plaques that are prone to rupture. Thus, it is important to detect and monitor the development of NCPs. Contrast-enhanced coronary Computed Tomography Angiography (CTA) is a potential imaging technique to identify atherosclerotic plaques in the whole coronary tree, but it fails to provide information about vessel walls. In order to overcome the limitations of coronary CTA and provide more meaningful quantitative information for percutaneous coronary intervention (PCI), we proposed a Voxel-Map based on mathematical morphology to quantitatively analyze the noncalcified plaques on a three-dimensional coronary artery wall model (3D-CAWM). This approach is a combination of Voxel-Map analysis techniques, plaque locating, and anatomical location related labeling, which show more detailed and comprehensive coronary tree wall visualization.

scholarly journals Vascularisation Pattern of Chronic Pancreatitis Compared with Pancreatic Carcinoma: Results from Contrast-Enhanced Endoscopic Ultrasound

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Michael Hocke ◽  
Christoph F. Dietrich
Keyword(s):  
Pancreatic Cancer ◽  
Chronic Pancreatitis ◽  
Pancreatic Carcinoma ◽  
Endoscopic Ultrasound ◽  
Clinical Medicine ◽  
Pancreatic Tissue ◽  
Mechanical Index ◽  
Contrast Enhanced ◽  
Inflammatory Processes ◽  
Doppler Techniques

Discriminating between focal chronic pancreatitis and pancreatic cancer is always a challenge in clinical medicine. Contrast-enhanced endoscopic ultrasound using Doppler techniques can uniquely reveal different vascularisation patterns in pancreatic tissue alterated by chronic inflammatory processes and even allows a discrimination from pancreatic cancer. This paper will describe the basics of contrast-enhanced high mechanical index endoscopic ultrasound (CEHMI EUS) and contrast enhanced low mechanical index endoscopic ultrasound (CELMI EUS) and explain the pathophysiological differences of the vascularisation of chronic pancreatitis and pancreatic carcinoma. Furthermore it will discuss how to use these techniques in daily clinical practice.

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