Pseudoenhancement of Renal Cysts: Influence of Lesion Size, Lesion Location, Slice Thickness, and Number of MDCT Detectors

2012 ◽  
Vol 198 (1) ◽  
pp. 133-137 ◽  
Author(s):  
Rafel Tappouni ◽  
Jennifer Kissane ◽  
Nabeel Sarwani ◽  
Erik B. Lehman
Keyword(s):  
Renal Cysts ◽  
Lesion Size ◽  
Slice Thickness ◽  
Lesion Location

scholarly journals Associations between stroke severity, aphasia severity, lesion location, and lesion size in acute stroke, and aphasia severity one year post stroke

Aphasiology ◽  
2021 ◽  
pp. 1-23
Author(s):  
Hedda Døli ◽  
Wenche Andersen Helland ◽  
Turid Helland ◽  
Halvor Næss ◽  
Håkon Hofstad ◽  
...  
Keyword(s):  
Acute Stroke ◽  
Lesion Size ◽  
Stroke Severity ◽  
Lesion Location ◽  
Post Stroke ◽  
One Year

scholarly journals Approach to Complex Renal Cysts: A Single Center Experience

2021 ◽  
Author(s):  
Nadir Kalfazade ◽  
Ekrem Güner
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Renal Cyst ◽  
Renal Cysts ◽  
Papillary Renal Cell Carcinoma ◽  
Lesion Size ◽  
Cell Renal Cell Carcinoma ◽  
Study Results ◽  
The Mean

Objective: Our objective in this study was to present the data for patients followed-up and underwent surgery due to complex renal cyst using Bosniak classification system. Method: Data of all patients followed-up or underwent surgery via open / minimal invasive methods due to complex renal cyst in our clinic between 2016 and 2019 were retrospectively evaluated. Bosniak category IIF and higher lesions were included in the study. Results: A total of 83 patients were included in the study. The mean age of the patients was 52 ±10.1 years and 40 (48.2%) were male and 43 (51.8%) were female. 53 (63.9%) patients had Bosniak IIF, 18 (21.7%) patients had Bosniak III and 12 (14.5%) patients had Bosniak IV lesions. Mean lesion size was 54±27.4 mm. Surgery was performed in a total of 41 (49.4%) patients. Based on final pathology result, while benign pathologies were detected in 13 (31.7%) patients, clear cell renal cell carcinoma was detected in 22 (53.7%) patients and papillary renal cell carcinoma in 6 (14.6%) patients. Malignity rates were detected as 18.9%, 44.4% and 83.3% in Bosniak IIF, III and IV lesions respectively. While the mean lesion size of patients who had benign pathology were 64.6±18.4 mm, mean lesion size of patients with malign pathology were 58.3±29.7 mm (p =.41). Conclusion: Progression is an important malignity finding in Bosniak IIF lesions. An important amount of especially Bosniak III lesions is overtreated. Thus, active surveillance is a treatment which should be considered in these patients. More comprehensive prospective randomized studies are needed.

scholarly journals Associations between lesion size, lesion location and aphasia in acute stroke

Aphasiology ◽  
2020 ◽  
pp. 1-19
Author(s):  
Hedda Døli ◽  
Wenche Andersen Helland ◽  
Turid Helland ◽  
Karsten Specht
Keyword(s):  
Acute Stroke ◽  
Lesion Size ◽  
Lesion Location

Agreement in Breast Lesion Assessment and Final BI-RADS Classification Between Radial and Meander-Like Breast Ultrasound

2020 ◽  
Author(s):  
Pascale Brasier-Lutz ◽  
Claudia Jäggi-Wickes ◽  
Sabine Schaedelin ◽  
Rosemarie Burian ◽  
Cora-Ann Schoenenberger ◽  
...  
Keyword(s):  
Breast Lesion ◽  
Morphological Characteristics ◽  
Lesion Size ◽  
Breast Ultrasound ◽  
Architectural Distortion ◽  
Suitable Alternative ◽  
Lesion Location ◽  
High Degree ◽  
Face Localization

Abstract Background: This study prospectively investigates the agreement between radial (r-US) and meander-like (m-US) breast ultrasound with regard to lesion location, lesion size, morphological characteristics and final BI-RADS classification of individual breast lesions. Methods: Each patient of a consecutive, unselected, mixed collective received a dual ultrasound examination. Results: The agreement between r-US and m-US for lesion location ranged from good (lesion to mammilla distance ICC 0.64; lesion to skin distance ICC 0.72) to substantial (clock-face localization κ 0.70). For lesion size the agreement was good (diameter ICC 0.72; volume ICC 0.69), for lesion margin and architectural distortion it was substantial (κ 0.68 and 0.70, respectively). Most importantly, there was a substantial agreement (κ 0.76) in the final BI-RADS classification between r-US and m-US.Conclusions: Our recent comparison of radial and meander-like breast US revealed that the diagnostic accuracy of the two scanning methods was comparable. In this study, we observe a high degree of agreement between m-US and r-US for the lesion description (location, size, morphology) and final BI-RADS classification. These findings corroborate that r-US is a suitable alternative to m-US in daily clinical practice.Trial registration: NCT02358837. Registered January 2015, retrospectively registeredhttps://clinicaltrials.gov/ct2/results?cond=&term=NCT02358837&cntry=&state=&city=&dist=

scholarly journals Predictors of technical difficulty with duodenal ESD

2019 ◽  
Vol 07 (12) ◽  
pp. E1755-E1760 ◽  
Author(s):  
Motohiko Kato ◽  
Motoki Sasaki ◽  
Mari Mizutani ◽  
Koshiro Tsutsumi ◽  
Yoshiyuki Kiguchi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Multivariate Analysis ◽  
Observational Study ◽  
Confidence Interval ◽  
Odds Ratio ◽  
Scoring System ◽  
Technical Difficulty ◽  
Lesion Size ◽  
Procedure Time ◽  
Lesion Location

Abstract Background and study aims Duodenal endoscopic submucosal dissection (ESD) is still considered technically challenging; however, few studies have objectively analyzed predictors of the technical difficulty. Therefore, the aim of the current study was to elucidate predictors of the technical difficulty of duodenal ESD. Patients and methods This was a retrospective observational study. From June 2010 to June 2017, a total of 174 consecutive patients with superficial duodenal epithelial neoplasia who underwent ESD were included in this study. We tried to identify predictors for technical difficulty of ESD by defining technical difficulty as either procedure time > 100 minutes or intraprocedural perforation. Moreover, we constructed a scoring system consisting of factors that were significant in the multivariate analysis. Results The proportion of patients with technical difficulty was 34.5 %. In the multivariate analysis, lesion location in flexural part [odds ratio (OR), 2.61; 95 % confidence interval (CI), 1.02 – 6.68], larger lesion size (> 40 mm) (OR, 5.26; 95% CI, 2.15 – 12.9), and occupied circumference > 50 % of the duodenum (OR, 5.80; 95 % CI, 1.83 – 18.4) were associated with technical difficulty. Conclusion A lesion location in flexural part, lesion size >40 mm and occupied circumference > 50 % were risk factors for technical difficulty of duodenal ESD.

Predictive Value of Additional Clinical and Radiological Parameters for Discrimination of Malignancy in Bosniak 3 Cysts

2020 ◽  
pp. 1-6
Author(s):  
Ertugrul Sefik ◽  
Ibrahim Halil Bozkurt ◽  
Gulsen Yucel Oguzdogan ◽  
Serdar Çelik ◽  
Ismail Basmaci ◽  
...  
Keyword(s):  
Cyst Wall ◽  
Renal Cysts ◽  
Lesion Size ◽  
Smoking History ◽  
Tumor Diameter ◽  
Independent Predictive Factor ◽  
Radiological Parameters ◽  
Malignant Group ◽  
Group 2 ◽  
Group 1

<b><i>Introduction:</i></b> Almost half of the cystic renal lesions are still overdiagnosed and overtreated. New clinical and radiological parameters are needed to distinguish the malignant Bosniak 3 lesions from the benign ones. We aimed to evaluate the clinical and radiological parameters that may be related to malignancy risk for Bosniak category 3 renal cysts. <b><i>Materials and Methods:</i></b> Patients who underwent surgical resection of a histopathologically confirmed Bosniak 3 renal cyst between March 2007 and September 2019 were evaluated. Two experienced uro-radiologists have reevaluated the last preoperative computed tomography and/or MRI images of the patients and reclassified the lesions according to the Bosniak classification. They also reported cystic features such as nodularity, septation, focal thickening, enhancement, and calcification. Clinical, pathological, and oncological outcomes were recorded. Then patients were divided into 2 groups as Group 1 (benign pathology) and Group 2 (malignant pathology) according to final histopathological report. <b><i>Results:</i></b> A total of 79 patients were included in this study. Mean follow-up time was 47 ± 34 months. There were 30 patients in Group 1 and 49 patients in Group 2. Hypertension (<i>p</i> = 0.001) and smoking history (<i>p</i> = 0.008) were more common in malignant group. Among the radiological findings, lower tumor diameter (<i>p</i> = 0.024), presence of cyst wall enhancement (<i>p</i> = 0.025), presence of nodularity (<i>p</i> = 0.002), and presence of focal thickening (<i>p</i> = 0.031) were found to be statistically significant for malignancy. Most of the tumors were at pathological T1 stage and Fuhrmann Grade 1–2. Only nodularity was found to be independent predictive factor for malignancy in multivariate analysis. <b><i>Conclusion:</i></b> Clinical factors including hypertension and smoking, radiological factors including lower lesion size, cyst wall enhancement, nodularity, and focal thickening were predictors for malignancy of Bosniak 3 cysts.

scholarly journals The impact of lesion location and lesion size on poststroke infection frequency

2009 ◽  
Vol 81 (2) ◽  
pp. 198-202 ◽  
Author(s):  
J. Minnerup ◽  
H. Wersching ◽  
B. Brokinkel ◽  
R. Dziewas ◽  
P. U. Heuschmann ◽  
...  
Keyword(s):  
Lesion Size ◽  
Infection Frequency ◽  
Lesion Location ◽  
The Impact

scholarly journals How CT reconstruction parameters effect measurement error of pulmonary nodules volume

2020 ◽  
Vol 12 (3) ◽  
pp. 73-77
Author(s):  
Zaur A. Alderov ◽  
Evgeny V. Rozengauz ◽  
Denis Nesterov
Keyword(s):  
Systematic Error ◽  
Linear Regression Analysis ◽  
Ct Scanning ◽  
Lesion Size ◽  
Slice Thickness ◽  
Ct Reconstruction ◽  
Size Estimation ◽  
Stochastic Errors ◽  
Volumetric Errors ◽  
Reconstruction Kernel

One of the the widely used way to follow up oncological disease is estimation of lesion size differences. Volumetry is one of the most accurate approaches of lesion size estimation. However, being highly sensitive, volumetric errors can reach 60%, which significantly limits the applicability of the method. Purpose was to estimate the effect of reconstruction parameters on volumetry error. Materials and methods. 32 patients with pulmonary metastases underwent a CT scanning with 326 foci detected. 326 pulmonary were segmented. Volumetry error was estimated for every lesion with each combination of slice thickness and reconstruction kernel. The effect was measured with linear regression analysis Results. Systematic and stochastic errors are impacted by slice thickness, reconstruction kernel, lesion position and its diameter. FC07 kernel and larger slice thickness is associated with high systematic error. Both systematic and stochastic errors decrease with lesion enlargment. intrapulmonary lesions have the lowest error regardless the reconstruction parameters. Lineal regression model was created to prognose error rate. Model standart error was 6.7%. There was corelation between model remnants deviation and slice thickness, reconstruction kernel, lesion position and its diameter. Conclusion. The systematic error depends on the focal diameter, slice thickness and reconstruction kernel. It can be estimated using the proposed model with a 6% error. Stochastic error mainly depends on lesion size.

Single-Incision Laparoscopic Deroofing and Omentalization of a Cystic Renal Adenoma in a Dog

2020 ◽  
Vol 56 (6) ◽  
pp. 331
Author(s):  
Nikesh J. Patel ◽  
Rachel Brady ◽  
Valery F. Scharf
Keyword(s):  
Cystic Lesion ◽  
Left Kidney ◽  
Clinical Signs ◽  
Renal Cysts ◽  
Lesion Size ◽  
Invasive Treatment ◽  
Abdominal Ultrasonography ◽  
Ethanol Sclerotherapy ◽  
Transient Improvement ◽  
Laparoscopic Deroofing

ABSTRACT A 12 yr old 13.5 kg male castrated Pembroke Welsh corgi was presented for evaluation of a suspected renal cyst following multiple episodes of lethargy and abdominal pain. Abdominal imaging revealed a large, thin-walled, hypoechoic cystic lesion associated with the cranial pole of the left kidney and a second smaller cystic lesion on the caudal pole. The larger cystic lesion was repeatedly drained percutaneously, but the lesion returned to initial size and clinical signs returned within weeks. Percutaneous ethanol sclerotherapy achieved only transient improvement in lesion size and abdominal discomfort. Laparoscopic deroofing and omentalization of the larger left renal cystic lesion was performed. The resected cystic wall was histopathologically consistent with a renal adenoma. Abdominal ultrasonography performed 1 mo postoperatively found no recurrence of the cystic renal adenoma. Repeated ultrasonography at 3 mo postoperatively detected a small cystic lesion at the cranial pole of the left kidney, which remained static in appearance at 11 and 18 mo postoperatively. During all follow-up visits, the dog was reported to be doing well with no recurrence of clinical signs. Renal cysts causing clinical signs and renal adenomas are rare in veterinary medicine; laparoscopic deroofing and omentalization provides a minimally invasive treatment approach.

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