Impact of Multiparametric Stone Measurement in Noncontrast Computer Tomography on Ureterorenoscopic Stone Removal

2021 ◽  
pp. 1-5
Author(s):  
Marie-Claire Rassweiler-Seyfried ◽  
Corinna Otto ◽  
Stefan Haneder ◽  
Philipp Riffel ◽  
Johannes Stein ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Computer Tomography ◽  
Imaging Modality ◽  
Operating Time ◽  
Laser Lithotripsy ◽  
Maximum Diameter ◽  
Stone Removal ◽  
Bone Window ◽  
Radiological Report ◽  
Stone Treatment

<b><i>Purpose:</i></b> Low-dose computer tomography (NCCT) is the standard imaging modality for patients with acute flank pain with a suspicion of urolithiasis. The stone size is usually measured 2D by a radiologist. We compared 3D stone measurement using different windows to the 2D measurement and evaluated the clinical impact on ureterorenoscopic stone removal (URS). <b><i>Methods:</i></b> One hundred sixty-four patients (201 stones) with a preoperative NCCT, following a URS within 4 weeks, were included in this study. Stone location, number and size of stones, operating time, and laser lithotripsy were documented. Stones were measured in 3D using bone and soft tissue window. The maximum diameter was compared to the radiological report. The U test, Kruskal-Wallis, and regression were used for statistical analyses. <b><i>Results:</i></b> Almost two-thirds (64.68%; 130 stones) of stone measurements in 3D with the bone window were lower than the radiologist reports in 2D. One-third (34.83%; 70 stones) of stone measurements were higher and 0.5% (1 stone) reported the same size. Using the 3D soft tissue window, 81.09% (163 stones), 17.91% (37 stones), and 1% (2 stones) of stones were measured bigger, smaller, or had the same measurement results, respectively. In the clinical setting, we could calculate a cutoff for laser lithotripsy at a maximum stone diameter of 5.70 mm (<i>p</i> &#x3c; 0.01) with the 3D and 6.01 mm with the 2D measurements, respectively, and found a significant correlation between maximum stone diameter and operating time (<i>p</i> &#x3c; 0.01) and number of stones and operating time (<i>p</i> &#x3c; 0.01 with and <i>p</i> = 0.02 without laser). <b><i>Conclusion:</i></b> 3D stone measurement with bone window seems to be more accurate than 2D measurement, but 2D is sufficient for planning stone treatment.

scholarly journals Comparison of Urinary Calculi Size Between Bone and Soft Tissue Window in Computed Tomography

2021 ◽  
Vol 14 (1) ◽  
pp. 323-328
Author(s):  
Silpa Thampi ◽  
Irshad Cheriya Parambil ◽  
Lakshmikanth Halegubbi Karegowda ◽  
Priyanka Priyanka
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Urinary Calculi ◽  
Maximum Diameter ◽  
Cross Sectional ◽  
Axial Diameter ◽  
Bone Window ◽  
Significant Difference ◽  
Frequent Site ◽  
Enhanced Computed Tomography

Computed Tomography is an important technique for imaging the urinary calculi using cross sectional images. The size and site of the calculi are significant aspect that are necessary for treatment. Therefore, present study aims to compare diameters of calculi measured using bone and soft tissue window settings in CT and also determinesmost frequent site for occurrence of calculi in urinary system. This is a retrospective study including total of 126 patients (91 males, 35 females, age range: 20-50 years). The patients who had undergone non contrast enhanced computed tomography of Kidney Ureter and Bladder (NCCT KUB) and diagnosed with urinary calculi were included in study. For each calculus found on CT image, two diameters such as maximum diameter and perpendicular diameter was measured on coronal plane using soft tissue and bone window settings. Site of calculi was also noted.To compare diameters measured using soft tissue and bone window settings Wilcoxon signed ranks test was used.Mean of maximum diameter and perpendicular diameter of the calculi measured by soft tissue and bone window settings in CT was 0.74±0.5, 0.82 ±1.8 and 0.79 ± 0.5 ,0.67 ± 0.49 respectively. It was found that there was significant difference in diameters of calculi measured using soft tissue and bone window setting (p<0.0001). The study concludes that there was mean difference of0.08 cms and 0.12 cms for maximum axial diameter and perpendicular diameter respectively measured using soft tissue and bone window settings in CT. Calculi in kidneys was most common site in our study population.

Myxofibrosarcoma: clinical and prognostic value of MRI features

2020 ◽  
Vol 16 ◽  
Author(s):  
Paolo Spinnato ◽  
Andrea Sambri ◽  
Tomohiro Fujiwara ◽  
Luca Ceccarelli ◽  
Roberta Clinca ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Local Recurrence ◽  
Contrast Enhancement ◽  
Imaging Modality ◽  
Soft Tissue Sarcomas ◽  
The Elderly ◽  
High Rate ◽  
Imaging Features ◽  
High Grade ◽  
Mri Features

: Myxofibrosarcoma is one of the most common soft tissue sarcomas in the elderly. It is characterized by an extremely high rate of local recurrence, higher than other soft tissue tumors, and a relatively low risk of distant metastases.Magnetic resonance imaging (MRI) is the imaging modality of choice for the assessment of myxofibrosarcoma and plays a key role in the preoperative setting of these patients.MRI features associated with high risk of local recurrence are: high myxoid matrix content (water-like appearance of the lesions), high grade of contrast enhancement, presence of an infiltrative pattern (“tail sign”). On the other hand, MRI features associated with worse sarcoma specific survival are: large size of the lesion, deep location, high grade of contrast enhancement. Recognizing the above-mentioned imaging features of myxofibrosarcoma may be helpful to stratify the risk for local recurrence and disease-specific survival. Moreover, the surgical planning should be adjusted according to the MRI features

scholarly journals Soft tissue masses: distribution of entities and rate of malignancy in small lesions

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Felix G. Gassert ◽  
Florian T. Gassert ◽  
Katja Specht ◽  
Carolin Knebel ◽  
Ulrich Lenze ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Benign Lesion ◽  
Maximum Diameter ◽  
Histopathological Diagnosis ◽  
Tumor Diameter ◽  
Mr Images ◽  
Tissue Mass ◽  
Malignancy Rate ◽  
Significant Difference ◽  
Soft Tissue Masses

Abstract Background Small soft tissue masses are often falsely assumed to be benign and resected with failure to achieve tumor-free margins. Therefore, this study retrospectively investigated the distribution of histopathologic diagnosis to be encountered in small soft tissue tumors (≤ 5 cm) in a large series of a tertiary referral center. Methods Patients with a soft tissue mass (STM) with a maximum diameter of 5 cm presenting at our institution over a period of 10 years, who had undergone preoperative Magnetic resonance imaging and consequent biopsy or/and surgical resection, were included in this study. A final histopathological diagnosis was available in all cases. The maximum tumor diameter was determined on MR images by one radiologist. Moreover, tumor localization (head/neck, trunk, upper extremity, lower extremity, hand, foot) and depth (superficial / deep to fascia) were assessed. Results In total, histopathologic results and MR images of 1753 patients were reviewed. Eight hundred seventy patients (49.63%) showed a STM ≤ 5 cm and were therefore included in this study (46.79 +/− 18.08 years, 464 women). Mean maximum diameter of the assessed STMs was 2.88 cm. Of 870 analyzed lesions ≤ 5 cm, 170 (19.54%) were classified as superficial and 700 (80.46%) as deep. The malignancy rate of all lesions ≤ 5 cm was at 22.41% (superficial: 23.53% / deep: 22.14%). The malignancy rate dropped to 16.49% (20.79% / 15.32%) when assessing lesions ≤ 3 cm (p = 0.007) and to 15.0% (18.18% / 13.79%) when assessing lesions ≤ 2 cm (p = 0.006). Overall, lipoma was the most common benign lesion of superficial STMs (29.41%) and tenosynovial giant cell tumor was the most common benign lesion of deep STMs (23.29%). Undifferentiated pleomorphic sarcoma was the most common malignant diagnosis among both, superficial (5.29%) and deep (3.57%) STMs. Conclusions The rate of malignancy decreased significantly with tumor size in both, superficial and deep STMs. The distribution of entities was different between superficial and deep STMs, yet there was no significant difference found in the malignancy rate.

scholarly journals Ultrasound and Doppler US in Evaluation of Superficial Soft-tissue Lesions

2014 ◽  
Vol 4 ◽  
pp. 12 ◽  
Author(s):  
Huseyin Toprak ◽  
Erkan Kiliç ◽  
Asli Serter ◽  
Ercan Kocakoç ◽  
Salih Ozgocmen
Keyword(s):  
Soft Tissue ◽  
Imaging Modality ◽  
Power Doppler ◽  
Soft Tissue Lesions ◽  
Doppler Us ◽  
Size Number ◽  
Ultrasound Technology ◽  
Superficial Tissue ◽  
Superficial Soft Tissue

Improved developments in digital ultrasound technology and the use of high-frequency broadband transducers make ultrasound (US) imaging the first screening tool in investigating superficial tissue lesions. US is a safe (no ionizing radiation), portable, easily repeatable, and cheap form of imaging compared to other imaging modalities. US is an excellent imaging modality to determine the nature of a mass lesion (cystic or solid) and its anatomic relation to adjoining structures. Masses can be characterized in terms of their size, number, component, and vascularity with US and Doppler US especially with power Doppler US. US, however, is operator dependent and has a number of artifacts that can result in misinterpretation. In this review, we emphasize the role of ultrasound, particularly power Doppler, in superficial soft-tissue lesions.

scholarly journals Meningioma in Lateral Cerebellomedullary Cistern without Dural Attachment

2017 ◽  
Vol 06 (02) ◽  
pp. 144-148
Author(s):  
Prithvi Varghese ◽  
Julio Kandathil ◽  
Jayasree Govindan ◽  
Rashmi R. ◽  
Muhammed Jalal
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Mass ◽  
Imaging Modality ◽  
Posterior Cranial Fossa ◽  
Tissue Mass ◽  
Tela Choroidea ◽  
Dural Tail ◽  
Dural Attachment ◽  
Cranial Fossa ◽  
Space Occupying Lesion

AbstractIntracranial meningiomas without dural attachment are rare and posterior cranial fossa meningiomas without dural attachment are rarer. Such meningiomas are thought to arise from arachnoid cap cells in pial membrane, tela choroidea, or choroid plexus. MRI is the best imaging modality for the diagnosis of meningiomas and typically shows an enhancing, dural based, extra-axial soft tissue mass with a characteristic dural tail. Meningioma without dural attachment should be suspected if the MRI shows a space-occupying lesion having features of a meningioma but without a dural base and dural tail. We report a case of meningioma in the lateral cerebellomedullary cistern without dural attachment.

CHARACTERISTICS OF SOFT TISSUE MASS IN THE HAND BY ULTRASONOGRAPHIC EXAMINATION

2005 ◽  
Vol 09 (01) ◽  
pp. 45-51
Author(s):  
Alexander Blankstein ◽  
Aharon Chechick ◽  
Abraham Adunski ◽  
Uri Givon ◽  
Yigal Mirovski ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Mass ◽  
Wrist Joint ◽  
Imaging Modality ◽  
Routine Practice ◽  
X Rays ◽  
Diagnostic Challenge ◽  
Tissue Mass ◽  
Soft Tissue Masses ◽  
The Right

Soft tissue masses are amongst the commonest complaints encountered in orthopedic practice. Of these, masses found in the hand and the wrist are presented at higher frequency. They are often painful and may cause limitation of movement. This work describes the prevalence and the nature of soft tissue masses in the hand and wrist encountered in routine practice. This work was performed to assess the characteristics of soft tissue mass in the hand and the effectiveness of ultrasonography in the diagnosis of soft tissue masses and their differentiation from other lesions in the hand and wrist. Orthopedic surgical conditions that involve soft tissue in the hand and wrist may remain a diagnostic challenge when clinical diagnosis is uncertain and standard X-rays are non-diagnostic. High resolution ultrasound is widely available, non-invasive, without damage of radiation, imaging modality that can help the diagnosis. We reviewed retrospectively 25 patients with soft tissue masses. We compared the ultrasound findings with the histological findings in seven operated patients. A substantial majority of these lesions occurred in the right hand: 79% of the lesions were in the dorsal aspect of the hand, of which 37% were distal to the wrist joint, among them 42% at wrist either radial or ulnar; and 21% of the lesions were found in the volar aspect, among them 17% at wrist aspect, either radial or ulnar side. No predisposing factors could be found. The findings of this study reaffirm the utility of ultrasonography as primary diagnostic tool in routine orthopedic practice.

scholarly journals BLADDER CALCULI TWO DIFFERENT ENDOSCOPIC TECHNIQUES IN ITS MANAGEMENT

2020 ◽  
pp. 1-2
Author(s):  
Rahul Goel
Keyword(s):  
Operating Time ◽  
Complete Clearance ◽  
Endoscopic Techniques ◽  
Bladder Calculi ◽  
Bladder Stones ◽  
Significant Difference ◽  
Stone Treatment ◽  
Group 2 ◽  
Group 1

Introduction- presenting our experience of comparison of two endoscopic treatments for bladder stones. Material and Methods - Study includes 45 patients of vesical calculi, treated in our hospital between June 2010 to December 2017, randomly assigned in two groups group 1- transurethral removal using nephroscope and group 2 -percutaneous suprapubic removal using nephroscope. Results- Significant difference was observed in operating time group 1 (32.1+8.5 mins) and group 2 (46+7.3), statistically difference was seen in the post operative stay of patient which was higher in group 2, complete clearance was seen in both groups, while group 1 had maximum number of urethral entries in comparison to supra pubic group Conclusion -Transurethral vesical stone treatment using nephroscope is effective route of treatment of large vesical stones without increasing morbidity and without giving a supra pubic scar.

scholarly journals The Trends of Urolithiasis Therapeutic Interventions over the Last 20 Years: A Bibliographic Study

2021 ◽  
Vol 12 (1) ◽  
pp. e14-e14
Author(s):  
Amir Reza Abedi ◽  
Mohammadreza Razzaghi ◽  
Saeed Montazeri ◽  
Farzad Allameh
Keyword(s):  
English Language ◽  
Case Reports ◽  
Minimal Invasive ◽  
Therapeutic Interventions ◽  
Laser Application ◽  
Stone Removal ◽  
Increasing Trend ◽  
Stone Treatment ◽  
English Articles

Introduction: The clinical and economic burden of kidney stones is a challenge for the healthcare system. There is a limited bibliometric project exploring the literature trends on ‘urolithiasis’ and its related management. Methods: A systematic review was conducted to discover the related abstracts regarding each specific issue, investigated year by year from May 2000 to May 2020 (20 years). To make an effective comparison, the statistics resulting from every single study were allocated to two 10-year periods: period 1 (2000 to 2010) and period 2 (2010 to 2020). In this study, we included all English language articles, all non-English articles with English abstracts, and studies in which interventions were used for stone removal, including laser technology. Also, we excluded the studies without a published abstract, an intervention or a laser, animal and in vitro studies, and case reports. Results: These articles are about ureteroscopy (URS) (n=10360, 33.45%), percutaneous nephrolithotomy (PCN) (n =10790, 34.84%) and extra-corporeal shockwave lithotripsy (ESWL) (n=9846, 31.76%). When evaluating the two time periods, there were 9912 studies available in period one, which increased by ×2.12 times (112.71% rise) to 21084 studies in period two (P = 0.001). The increase was 133%, 103.51%, and 70.4% for URS, PCN, and SWL respectively. A total of 855 studies on Laser application via URS were published on PubMed over a 20-year period. There was an increasing trend toward using laser application via URS over the study period. Also, there were 230 articles published in period one, which increased by nearly 2.71 times (rise of 171.73%) to 625 papers in period two (P<0.001). There was an increasing trend toward using laser application via PCN; 126 papers were published in period one, which increased by nearly 3.05 times (rise of 205.5%) to 385 papers in period two (P = 0.002). Conclusion: The minimal invasive interventions for stone removal, including URS and PCN, increased dramatically in the last decade, and the use of lasers in stone treatment increased significantly in the last decade.

Radiological Assessment of Giant Cell Tumour of Bone in the Sacrum: From Diagnosis to Treatment Response Evaluation

2021 ◽  
Vol 17 ◽  
Author(s):  
Kirsten Van Langevelde ◽  
Niels Van Vucht ◽  
Shinji Tsukamoto ◽  
Andreas F. Mavrogenis ◽  
Costantino Errani
Keyword(s):  
Soft Tissue ◽  
Giant Cell ◽  
Giant Cell Tumour ◽  
Imaging Modality ◽  
Treatment Options ◽  
World Health Organisation ◽  
Axial Skeleton ◽  
Cell Tumour ◽  
World Health ◽  
Response Evaluation

: Giant cell tumour of bone (GCTB) typically occurs in young adults from 20-40 years old. Although the majority of lesions are located in the epi-metaphyses of the long bones, approximately one third of tumours is located in the axial skeleton, of which only 4% in the sacrum. Sacral tumours tend to be large at the time of presentation, and they present with aggressive features such as marked cortical destruction and an associated soft tissue component. The 2020 World Health Organisation classification of Soft Tissue and Bone Tumours describes GCTB as neoplasm which is locally aggressive and rarely metastasizing. The tumour contains three different cell types: neoplastic mononuclear stromal cells, macrophages and osteoclast-like giant cells. Two tumour subtypes were defined: conventional GCTB and malignant GCTB. Only 1-4% of GCTB is malignant. In this review article, we will discuss imaging findings at the time of diagnosis to guide the musculoskeletal radiologist in reporting these tumours. In addition, imaging for response evaluation after various treatment options will be addressed, such as surgery, radiotherapy, embolization and denosumab. Specific findings will be presented per imaging modality and illustrated by cases from our tertiary sarcoma referral center. Common postoperative and post radiotherapy findings in GCTB of the sacrum on MRI will be discussed.

scholarly journals Craniotomy Revisited: Techniques for Improved Access and Reconstruction

2000 ◽  
Vol 27 (1) ◽  
pp. 44-48 ◽  
Author(s):  
Michael D. Cusimano ◽  
Agustinus S. Suhardja
Keyword(s):  
Soft Tissue ◽  
Operating Time ◽  
Additional Cost ◽  
Bone Flap ◽  
Temporalis Muscle ◽  
Native Bone ◽  
Soft Tissue Dissection ◽  
Tissue Dissection ◽  
Orbital Rim ◽  
Additional Operating Time

ABSTRACT:Objective:To describe simple modifications of the technique of opening and closure of the craniotomy to improve basal exposure and reconstruction.Methods:The modifications involve: a) additional soft-tissue dissection which is carried downward to the base of the ear and to the orbital rim, exposing the orbital rim and malar eminence without removing the bone; b) cutting the bone flap so that ‘bridges’ of bone remain that help to stabilize the flap when it is returned to the cranium at the end of the operation; c) the wedging of bone chips between the bone flap and native cranium at the time the bone is being reaffixed so as to provide firm stability by diminishing movement of the bone flap; d) the use of bone dust and bone chips mixed with the patient's blood to seal and bridge the gap between the bone flap and the native bone; e) reattachment of the temporalis muscle with the bone flap sutures. An ‘inlay’ technique of duraplasty is also described.Results and Conclusion:These simple modifications of craniotomy provide better basal exposure and reconstruction with little additional operating time at no additional cost.

Sign in / Sign up

Export Citation Format

Share Document