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Brandi N, Mosconi C, Giampalma E, Renzulli M. Bosniak Classification of Cystic Renal Masses: Looking Back, Looking Forward. Acad Radiol 2024:S1076-6332(23)00694-3. [PMID: 38199901 DOI: 10.1016/j.acra.2023.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/22/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024]
Abstract
RATIONALE AND OBJECTIVES According to the 2019 update of the Bosniak classification, the main imaging features that need to be evaluated to achieve a correct characterization of renal cystic masses include the thickness of walls and septa, the number of septa, the appearance of walls and septa, the attenuation/intensity on non-contrast CT/MRI and the presence of unequivocally perceived or measurable enhancement of walls and septa. Despite the improvement deriving from a quantitative evaluation of imaging features, certain limitations seem to persist and some possible scenarios that can be encountered in clinical practice are still missing. MATERIALS AND METHODS A deep analysis of the 2019 update of the Bosniak classification was performed. RESULTS The most notable potential flaws concern: (1) the quantitative measurement of the walls and septa; (2) the fact that walls and septa > 2 mm are always referred to as "enhancing", not considering the alternative scenario; (3) the description of some class II masses partially overlaps with each other and with the definition of class I masses and (4) the morphological variations of cystic masses over time is not considered. CONCLUSION The present paper analyzes in detail the limitations of the 2019 Bosniak classification to improve this important tool and facilitate its use in daily radiological practice.
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Affiliation(s)
- Nicolò Brandi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy (N.B., C.M., M.R.).
| | - Cristina Mosconi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy (N.B., C.M., M.R.); Department of Radiology, Alma Mater Studiorum University of Bologna, Bologna, Italy (C.M.)
| | - Emanuela Giampalma
- Radiology Unit, Morgagni-Pierantoni Hospital, AUSL Romagna, Forlì, Italy (E.G.)
| | - Matteo Renzulli
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy (N.B., C.M., M.R.)
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2
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Caruso M, Rinaldo C, Iacobellis F, Dell'Aversano Orabona G, Grimaldi D, Di Serafino M, Schillirò ML, Verde F, Sabatino V, Camillo C, Ponticiello G, Romano L. Abdominal compartment syndrome: what radiologist needs to know. LA RADIOLOGIA MEDICA 2023; 128:1447-1459. [PMID: 37747669 DOI: 10.1007/s11547-023-01724-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/05/2023] [Indexed: 09/26/2023]
Abstract
The intra-abdominal hypertension (IAH) and the abdominal compartment syndrome (ACS) are life-threatening conditions with a significant rate of mortality; therefore, early detection is paramount in their optimal management. IAH is diagnosed when the intra-abdominal pressure (IAP) is more than 12 mmHg. It can occur when the intra-abdominal volume increases (ileus, ascites, trauma, pancreatitis, etc.) and/or the abdominal wall compliance decreases. IAH can cause decreased venous flow, low cardiac output, renal impairment, and decreased respiratory compliance. Consequently, these complications can lead to multiple organ failure and induce the abdominal compartment syndrome (ACS) when IAP rises above 20 mmHg. The diagnosis is usually made with intravesical pressure measurement. However, this measurement was not always possible to obtain; therefore, alternative diagnostic techniques should be considered. In this setting, computed tomography (CT) may play a crucial role, allowing the detection and characterization of pathological conditions that may lead to IAH. This review is focused on the pathogenesis, clinical features, and radiological findings of ACS, because their presence allows radiologists to raise the suspicion of IAH/ACS in critically ill patients, guiding the most appropriate treatment.
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Affiliation(s)
- Martina Caruso
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy.
| | - Chiara Rinaldo
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Francesca Iacobellis
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | | | - Dario Grimaldi
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Marco Di Serafino
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Maria Laura Schillirò
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Francesco Verde
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Vittorio Sabatino
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Costanza Camillo
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Gianluca Ponticiello
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
| | - Luigia Romano
- Department of General and Emergency Radiology, "Antonio Cardarelli" Hospital, 80131, Naples, Italy
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3
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Bkiri S, Abbad F, Ghadouane M. Xanthogranulomatous Pyelonephritis With Extension to the Liver: A Case Report. Cureus 2023; 15:e42929. [PMID: 37667725 PMCID: PMC10475155 DOI: 10.7759/cureus.42929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2023] [Indexed: 09/06/2023] Open
Abstract
Xanthogranulomatous pyelonephritis (XGP) is an uncommon condition representing 1% of all renal infections. XGP due to complicated pyelonephritis associated with hepatic abscess is an extremely rare complication and has rarely been reported in the literature. We report a rare case of a 54-year-old female with a history of diabetes and recurrent urinary tract infections (UTI) who presented with acute right flank pain and fever which had been ongoing for four days. CT scan showed multiple bilateral obstructive nephrolithiasis associated with a liver abscess. Given the patient's high risk of nephron loss, a bilateral renal and liver abscess drainage followed by a two-stage flexible ureterorenoscopy (FURS) was performed. One week later, a CT scan showed a typical radiological aspect of XGP on the right kidney invading the liver. She urgently underwent a right nephrectomy with an uneventful outcome. In conclusion, the diagnosis of XGP should be considered in the presence of complicated pyelonephritis associated with hepatic abscess.
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Affiliation(s)
- Saad Bkiri
- Department of Urology, Cheikh Zaid International Hospital, Abulcasis International University, Rabat, MAR
| | - Fayçal Abbad
- Department of Histopathology, Cheikh Zaid International Hospital, Abulcasis International University, Rabat, MAR
| | - Mohammed Ghadouane
- Department of Urology, Cheikh Zaid International Hospital, Abulcasis International University, Rabat, MAR
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4
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Gauhar V, Robles-Torres JI, Wroclawski ML, Trujillo-Santamaría H, Teoh JYC, Tanidir Y, Mahajan A, Gadzhiev N, Ragoori D, Kumar S, Ganpule A, Maheshwari PN, García-Chairez LR, Enrriquez-Ávila JV, Monzón-Falconi JF, Esqueda-Mendoza A, Flores-Tapia JP, Duarte-Santos HO, Farooq M, Arjunrao Gite V, Mani Sinha M, Somani BK, Castellani D. Clinical Presentation, Microbiological Characteristics, and Their Implications for Perioperative Outcomes in Xanthogranulomatous Pyelonephritis: Perspectives from a Real-World Multicenter Practice. Pathogens 2023; 12:pathogens12050695. [PMID: 37242365 DOI: 10.3390/pathogens12050695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Xanthogranulomatous pyelonephritis (XGP) is an uncommon chronic granulomatous infection of renal parenchyma. XGP is often associated with long-term urinary tract obstruction due to stones and infection. We aimed to analyze the clinical, laboratory, and microbial culture profiles from bladder and kidney urine of patients who were diagnosed with XGP. Databases of patients with histopathological diagnosis of XGP from 10 centers across 5 countries were retrospectively reviewed between 2018 and 2022. Patients with incomplete medical records were excluded. A total of 365 patients were included. There were 228 (62.5%) women. The mean age was 45 ± 14.4 years. The most common comorbidity was chronic kidney disease (71%). Multiple stones were present in 34.5% of cases. Bladder urine culture results were positive in 53.2% of cases. Kidney urine culture was positive in 81.9% of patients. Sepsis and septic shock were present in 13.4% and 6.6% of patients, respectively. Three deaths were reported. Escherichia coli was the most common isolated pathogen in both urine (28.4%) and kidney cultures (42.4%), followed by Proteus mirabilis in bladder urine cultures (6.3%) and Klebsiella pneumoniae (7.6%) in kidney cultures. Extended-spectrum beta-lactamases producing bacteria were reported in 6% of the bladder urine cultures. On multivariable analysis, urosepsis, recurrent urinary tract infections, increased creatinine, and disease extension to perirenal and pararenal space were independent factors associated with positive bladder urine cultures. On multivariable analysis, only the presence of anemia was significantly more frequent in patients with positive kidney cultures. Our results can help urologists counsel XGP patients undergoing nephrectomy.
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Affiliation(s)
- Vineet Gauhar
- Department of Minimally Invasive Urology, Ng Teng Fong General Hospital, Singapore 609606, Singapore
| | - José Iván Robles-Torres
- Urology Department, Hospital Universitario "Dr. José Eleuterio González," Monterrey 64460, Mexico
| | - Marcelo Langer Wroclawski
- Department of Urology, Hospital Israelita Albert Einstein, BP-A Beneficência Portuguesa de São Paulo, Sao Paulo 05562-900, SP, Brazil
- Faculdade de Medicina do ABC, Santo André 09060-870, SP, Brazil
| | | | - Jeremy Yuen Chun Teoh
- S.H. Ho Urology Centre, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Yiloren Tanidir
- Department of Urology, School of Medicine, Marmara University, Istanbul 34854, Turkey
| | - Abhay Mahajan
- Department of Urology, Mahatma Gandhi Mission's Medical College and Hospital, Aurangabad 431003, India
| | - Nariman Gadzhiev
- Urology Department, Saint Petersburg State University Hospital, 199034 Saint Petersburg, Russia
| | - Deepak Ragoori
- Department Urology, Asian Institute of Nephrology and Urology, Hyderabad 500082, India
| | - Santosh Kumar
- Department Urology, Christian Medical College, Vellore 632004, India
| | - Arvind Ganpule
- Department of Urology, Muljibhai Patel Urological Hospital, Ahemadabad 387001, India
| | | | | | | | | | - Antonio Esqueda-Mendoza
- Department of Urology, Hospital Regional de Alta Especialidad de la Penisula de Yucatán, Mérdida 97133, Mexico
| | - Juan Pablo Flores-Tapia
- Department of Urology, Hospital Regional de Alta Especialidad de la Penisula de Yucatán, Mérdida 97133, Mexico
| | | | - Mudasir Farooq
- Department Urology, Christian Medical College, Vellore 632004, India
| | - Venkat Arjunrao Gite
- Department Urology, Grant Medical College & Sir JJ hospital, Mumbai 400008, India
| | - Mriganka Mani Sinha
- Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
| | - Daniele Castellani
- Urology Unit, Azienda Ospedaliero-Universitaria Delle Marche, Università Politecnica delle Marche, 60126 Ancona, Italy
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Cellina M, Cè M, Rossini N, Cacioppa LM, Ascenti V, Carrafiello G, Floridi C. Computed Tomography Urography: State of the Art and Beyond. Tomography 2023; 9:909-930. [PMID: 37218935 PMCID: PMC10204399 DOI: 10.3390/tomography9030075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/24/2023] Open
Abstract
Computed Tomography Urography (CTU) is a multiphase CT examination optimized for imaging kidneys, ureters, and bladder, complemented by post-contrast excretory phase imaging. Different protocols are available for contrast administration and image acquisition and timing, with different strengths and limits, mainly related to kidney enhancement, ureters distension and opacification, and radiation exposure. The availability of new reconstruction algorithms, such as iterative and deep-learning-based reconstruction has dramatically improved the image quality and reducing radiation exposure at the same time. Dual-Energy Computed Tomography also has an important role in this type of examination, with the possibility of renal stone characterization, the availability of synthetic unenhanced phases to reduce radiation dose, and the availability of iodine maps for a better interpretation of renal masses. We also describe the new artificial intelligence applications for CTU, focusing on radiomics to predict tumor grading and patients' outcome for a personalized therapeutic approach. In this narrative review, we provide a comprehensive overview of CTU from the traditional to the newest acquisition techniques and reconstruction algorithms, and the possibility of advanced imaging interpretation to provide an up-to-date guide for radiologists who want to better comprehend this technique.
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Affiliation(s)
- Michaela Cellina
- Radiology Department, Fatebenefratelli Hospital, ASST Fatebenefratelli Sacco, Piazza Principessa Clotilde 3, 20121 Milan, Italy
| | - Maurizio Cè
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy
| | - Nicolo’ Rossini
- Department of Clinical, Special and Dental Sciences, University Politecnica delle Marche, 60126 Ancona, Italy
| | - Laura Maria Cacioppa
- Division of Interventional Radiology, Department of Radiological Sciences, University Politecnica delle Marche, 60126 Ancona, Italy
| | - Velio Ascenti
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy
| | - Gianpaolo Carrafiello
- Radiology Department, Policlinico di Milano Ospedale Maggiore|Fondazione IRCCS Ca’ Granda, Via Francesco Sforza 35, 20122 Milan, Italy
| | - Chiara Floridi
- Division of Interventional Radiology, Department of Radiological Sciences, University Politecnica delle Marche, 60126 Ancona, Italy
- Division of Special and Pediatric Radiology, Department of Radiology, University Hospital “Umberto I-Lancisi-Salesi”, 60126 Ancona, Italy
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Tamburrini S, Comune R, Lassandro G, Pezzullo F, Liguori C, Fiorini V, Picchi SG, Lugarà M, Del Biondo D, Masala S, Tamburro F, Scaglione M. MDCT Diagnosis and Staging of Xanthogranulomatous Pyelonephritis. Diagnostics (Basel) 2023; 13:diagnostics13071340. [PMID: 37046557 PMCID: PMC10093395 DOI: 10.3390/diagnostics13071340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 03/30/2023] [Accepted: 04/03/2023] [Indexed: 04/07/2023] Open
Abstract
Background: Benign nephrectomy to treat patients with renal inflammatory disease in cases of severe urinary infection represents a diagnostic and management challenge because of significant inflammatory, fibrotic, and infectious components. Among renal inflammatory diseases, fistulization and invasiveness to adjacent structures are some of the hallmarks of xanthogranulomatous pyelonephritis (XGP). The aims of this study were as follows 1. to retrospectively determine key demographic and clinical features of XGP among benign nephrectomies; 2. to assess the CT preoperative diagnostic accuracy; and 3. to define the imaging characteristics of the CT stage. Material and Methods: A retrospective review of clinical, laboratory, and radiological features and operative methods of patients who underwent benign nephrectomy with histologically proven XGP was performed. Results: XPG was diagnosed in 18 patients over a 4-year (2018–2022) period. XGP represented 43.90% among benign nephrectomies. The mean age of the patients was 63 years, and the sex prevalence was higher in women (72.22%). Symptoms were vague and not specifically referrable to urinary tract disorders and unilateral (100%), with the left kidney affected in 61.11% of cases. Staghorn calculi and stone disease were the most common underlying cause (72.22%). All patients underwent CT. The preoperative CT imaging accuracy for renal inflammatory disease was 94.44% and indeterminate in 5.56%. A suspected diagnosis of XGP was formulated in 66.67% (12/18; 2 stage II/10 stage III), meanwhile, in 33.33% (6 patients with stage I), a non-specific diagnosis of renal inflammatory disease was formulated. CT was reported according to the Malek and Elder classification and staged in the stage I nephric form (33.33%), stage II perinephric form (11.11%), stage III paranephric form (55.56%). Conclusions: The CT diagnostic accuracy for kidney inflammatory disease was extremely high, whereas the suspected diagnosis of XGP was formulated preoperatively in only 66.67% of high-stage disease, where the hallmarks of invasiveness and fistulization of the pathology increased the diagnostic confidence.
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Affiliation(s)
- Stefania Tamburrini
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Rosita Comune
- Department of Precision Medicine, Section of Radiology and Radiotherapy, University of Campania “Luigi Vanvitelli”, 80128 Naples, Italy
| | - Giulia Lassandro
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Filomena Pezzullo
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Carlo Liguori
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Valeria Fiorini
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Stefano Giusto Picchi
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Marina Lugarà
- Department of Internal Medicine, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Dario Del Biondo
- Department of Urology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Salvatore Masala
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, 07100 Sassari, Italy
| | - Fabio Tamburro
- Department of Radiology, Ospedale del Mare-ASL NA1 Centro, Via Enrico Russo 11, 80147 Naples, Italy
| | - Mariano Scaglione
- Department of Medical, Surgical and Experimental Sciences, University of Sassari, 07100 Sassari, Italy
- James Cook University Hospital, Middlesbrough TS4 3BW, UK
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7
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Imaging of metabolic and overload disorders in tissues and organs. Jpn J Radiol 2023; 41:571-595. [PMID: 36680702 DOI: 10.1007/s11604-022-01379-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/24/2022] [Indexed: 01/22/2023]
Abstract
Metabolic and overload disorders are a heterogeneous group of relatively uncommon but important diseases. While imaging plays a key role in the early detection and accurate diagnosis in specific organs with a pivotal role in several metabolic pathways, most of these diseases affect different tissues as part of a systemic syndromes. Moreover, since the symptoms are often vague and phenotypes similar, imaging alterations can present as incidental findings, which must be recognized and interpreted in the light of further biochemical and histological investigations. Among imaging modalities, MRI allows, thanks to its multiparametric properties, to obtain numerous information on tissue composition, but many metabolic and accumulation alterations require a multimodal evaluation, possibly using advanced imaging techniques and sequences, not only for the detection but also for accurate characterization and quantification. The purpose of this review is to describe the different alterations resulting from metabolic and overload pathologies in organs and tissues throughout the body, with particular reference to imaging findings.
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Varghese B, Cen S, Zahoor H, Siddiqui I, Aron M, Sali A, Rhie S, Lei X, Rivas M, Liu D, Hwang D, Quinn D, Desai M, Vaishampayan U, Gill I, Duddalwar V. Feasibility of using CT radiomic signatures for predicting CD8-T cell infiltration and PD-L1 expression in renal cell carcinoma. Eur J Radiol Open 2022; 9:100440. [PMID: 36090617 PMCID: PMC9460152 DOI: 10.1016/j.ejro.2022.100440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 01/26/2023] Open
Abstract
Objectives To identify computed tomography (CT)-based radiomic signatures of cluster of differentiation 8 (CD8)-T cell infiltration and programmed cell death ligand 1 (PD-L1) expression levels in patients with clear-cell renal cell carcinoma (ccRCC). Methods Seventy-eight patients with pathologically confirmed localized ccRCC, preoperative multiphase CT and tumor resection specimens were enrolled in this retrospective study. Regions of interest (ROI) of the ccRCC volume were manually segmented from the CT images and processed using a radiomics panel comprising of 1708 metrics. The extracted metrics were used as inputs to three machine learning classifiers: Random Forest, AdaBoost, and ElasticNet to create radiomic signatures for CD8-T cell infiltration and PD-L1 expression, respectively. Results Using a cut-off of 80 lymphocytes per high power field, 59 % were classified to CD8 highly infiltrated tumors and 41 % were CD8 non highly infiltrated tumors, respectively. An ElasticNet classifier discriminated between these two groups of CD8-T cells with an AUC of 0.68 (95 % CI, 0.55-0.80). In addition, based on tumor proportion score with a cut-off of > 1 % tumor cells expressing PD-L1, 76 % were PD-L1 positive and 24 % were PD-L1 negative. An Adaboost classifier discriminated between PD-L1 positive and PD-L1 negative tumors with an AUC of 0.8 95 % CI: (0.66, 0.95). 3D radiomics metrics of graylevel co-occurrence matrix (GLCM) and graylevel run-length matrix (GLRLM) metrics drove the performance for CD8-Tcell and PD-L1 classification, respectively. Conclusions CT-radiomic signatures can differentiate tumors with high CD8-T cell infiltration with moderate accuracy and positive PD-L1 expression with good accuracy in ccRCC.
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Affiliation(s)
- Bino Varghese
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA,Correspondence to: Keck Medical Center of USC, University of Southern California, Norris Topping Tower 4417, Los Angeles, CA 90033, USA.
| | - Steven Cen
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Haris Zahoor
- Keck School of Medicine, Department of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Imran Siddiqui
- Keck School of Medicine, Department of Pathology, University of Southern California, Los Angeles, CA, USA
| | - Manju Aron
- Keck School of Medicine, Department of Pathology, University of Southern California, Los Angeles, CA, USA
| | - Akash Sali
- Homi Bhabha Cancer Hospital, Department of Pathology, Sangrur, Punjab, India
| | - Suhn Rhie
- Keck School of Medicine, Department of Molecular Medicine, University of Southern California, Los Angeles, CA, USA
| | - Xiaomeng Lei
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Marielena Rivas
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Derek Liu
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - Darryl Hwang
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
| | - David Quinn
- Keck School of Medicine, Department of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Mihir Desai
- Keck School of Medicine, Department of Urology, University of Southern California, Los Angeles, CA, USA
| | - Ulka Vaishampayan
- Rogel Cancer Center, Urologic Oncology Clinic, University of Michigan, Ann Arbor, MI, USA
| | - Inderbir Gill
- Keck School of Medicine, Department of Urology, University of Southern California, Los Angeles, CA, USA
| | - Vinay Duddalwar
- USC Radiomics Laboratory, Keck School of Medicine, Department of Radiology, University of Southern California, Los Angeles, CA, USA
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Liu Y, Tong G, Wen Z. Focal Xanthogranulomatous Pyelonephritis on FDG PET/CT. Clin Nucl Med 2022; 47:e611-e612. [PMID: 35384887 DOI: 10.1097/rlu.0000000000004181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
ABSTRACT Xanthogranulomatous pyelonephritis is a rare disease that was often accompanied with urinary obstruction. The focal form of xanthogranulomatous pyelonephritis is frequently misdiagnosed as malignancy. Here we present FDG PET/CT findings of a case focal xanthogranulomatous pyelonephritis in a 66-year-old woman with polycystic liver and kidney disease. The image showed a polycystic mass in the inferior pole of right kidney with high FDG uptake in the cystic wall, which was suggestive of a cystic renal carcinoma. Right radical nephrectomy was subsequently performed. The postsurgical pathology revealed xanthogranulomatous pyelonephritis.
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Affiliation(s)
- Yong Liu
- From the Departments of Ultrasonography
| | - Guansheng Tong
- Nuclear Medicine, Beijing Shijitan Hospital, Capital Medical University, Haidian District, Beijing, China
| | - Zhe Wen
- Nuclear Medicine, Beijing Shijitan Hospital, Capital Medical University, Haidian District, Beijing, China
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10
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Xanthogranulomatous pyelonephritis: a review and meta-analysis with a focus on management. Int Urol Nephrol 2022; 54:2445-2456. [PMID: 35809205 DOI: 10.1007/s11255-022-03253-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/03/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE Xanthogranulomatous pyelonephritis (XGP) is a rare form of pyelonephritis more commonly seen in females and diabetics. Frequently associated with renal tract calculi, it is often difficult to diagnose, as it can clinically and radiologically mimic other disorders. Most cases are treated with antibiotics and nephrectomy. The aim of our review is to summarise and analyse the current evidence focusing on management. METHODS A literature search was conducted to identify papers relating to xanthogranulomatous pyelonephritis in adults. Studies containing ten or more patients with XGP were included for descriptive analysis, and a meta-analyses of cohort studies conducted comparing open and minimally invasive nephrectomy undertaken. Other papers were included for narrative review. RESULTS 52 studies were identified, 20 were included for narrative review and 32 retrospective observational studies containing 868 patients were included for descriptive analysis. 99.8% of patients underwent nephrectomy, about one-third laparoscopically. The most commonly cultured organisms were Escherichia coli and Proteus mirabilis. 60% of patients, where reported, underwent preoperative drainage. Seven studies containing 211 patients were included for meta-analysis which found that postoperative complications, length of stay and transfusion requirements were all significantly reduced in those who underwent minimally invasive surgery. CONCLUSION The mainstay management of XGP is antibiotic therapy and nephrectomy. Some studies highlight a role for preoperative upper urinary tract drainage, but evidence supporting this is limited. We present the first meta-analyses examining operative approach for patients undergoing nephrectomy for XGP. Though limited by the data available, our meta-analysis indicates minimally invasive nephrectomy for XGP provides better postoperative outcomes.
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Granata V, Fusco R, Belli A, Danti G, Bicci E, Cutolo C, Petrillo A, Izzo F. Diffusion weighted imaging and diffusion kurtosis imaging in abdominal oncological setting: why and when. Infect Agent Cancer 2022; 17:25. [PMID: 35681237 PMCID: PMC9185934 DOI: 10.1186/s13027-022-00441-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 05/30/2022] [Indexed: 12/13/2022] Open
Abstract
This article provides an overview of diffusion kurtosis (DKI) imaging in abdominal oncology. DKI allows for more data on tissue structures than the conventional diffusion model (DWI). However, DKI requires high quality images at b-values greater than 1000 s/mm2 and high signal-to-noise ratio (SNR) that traditionally MRI systems are not able to acquire and therefore there are generally amplified anatomical distortions on the images due to less homogeneity of the field. Advances in both hardware and software on modern MRI scanners have currently enabled ultra-high b-value imaging and offered the ability to apply DKI to multiple extracranial sites. Previous studies have evaluated the ability of DKI to characterize and discriminate tumor grade compared to conventional DWI. Additionally, in several studies the DKI sequences used were based on planar echo (EPI) acquisition, which is susceptible to motion, metal and air artefacts and prone to low SNRs and distortions, leading to low quality images for some small lesions, which may affect the accuracy of the results. Another problem is the optimal b-value of DKI, which remains to be explored and not yet standardized, as well as the manual selection of the ROI, which could affect the accuracy of some parameters.
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Affiliation(s)
- Vincenza Granata
- Division of Radiology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", I-80131, Naples, Italy.
| | | | - Andrea Belli
- Division of Hepatobiliary Surgical Oncology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", I-80131, Naples, Italy
| | - Ginevra Danti
- Department of Radiology, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy.,Italian Society of Medical and Interventional Radiology, SIRM Foundation, Milan, Italy
| | - Eleonora Bicci
- Department of Radiology, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
| | - Carmen Cutolo
- Department of Medicine, Surgery and Dentistry, University of Salerno, Salerno, Italy
| | - Antonella Petrillo
- Division of Radiology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", I-80131, Naples, Italy
| | - Francesco Izzo
- Division of Hepatobiliary Surgical Oncology, "Istituto Nazionale Tumori IRCCS Fondazione Pascale - IRCCS di Napoli", I-80131, Naples, Italy
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12
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Hsu CK, Wu SY, Yang SD, Chang SJ. Emphysematous pyelonephritis: classification, management, and prognosis. Tzu Chi Med J 2022; 34:297-302. [PMID: 35912050 PMCID: PMC9333110 DOI: 10.4103/tcmj.tcmj_257_21] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 09/28/2021] [Accepted: 11/02/2021] [Indexed: 11/04/2022] Open
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13
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CT-guided percutaneous drainage of abdominopelvic collections: a pictorial essay. Radiol Med 2021; 126:1561-1570. [PMID: 34415507 PMCID: PMC8702416 DOI: 10.1007/s11547-021-01406-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/28/2021] [Indexed: 11/06/2022]
Abstract
CT-guided percutaneous drainage is a safe and effective procedure that allows minimally invasive treatment of abdominopelvic abscesses and fluid collections. This technique has become an alternative for surgery with lower morbility and mortality rates. In this pictorial essay, we aim at providing an overview of the technical approaches, the main clinical indications and complications of CT-guided percutaneous drainage, in order to provide a practical guide for interventional radiologists, with a review of the recent literature. The focus will be the CT-guidance, preferred when the interposition of viscera, vascular and skeletal structures, counteracts the ultrasound guidance.
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van ‘t Hof LJ, Pellikaan L, Soonawala D, Roshani H. An Unusual Presentation of Pyelonephritis: Is It COVID-19 Related? SN COMPREHENSIVE CLINICAL MEDICINE 2021; 3:1428-1433. [PMID: 33937632 PMCID: PMC8068460 DOI: 10.1007/s42399-021-00909-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 04/13/2021] [Indexed: 12/23/2022]
Abstract
In severe cases of COVID-19, late complications such as coagulopathy and organ injury are increasingly described. In milder cases of the disease, the exact time frame and causal path of late-onset complications have not yet been determined. Although direct and indirect renal injury by SARS-CoV-2 has been confirmed, hemorrhagic renal infection or coagulative problems in the urinary tract have not yet been described. This case report describes a 35-year-old female without relevant medical history who, five days after having recovered from infection with SARS-CoV-2, had an unusual course of acute pyelonephritis of the right kidney and persistent fever under targeted antibiotic treatment. A hemorrhagic ureteral obstruction and severe swollen renal parenchyma preceded the onset of fever and was related to the developing pyelonephritis. Sudden thrombotic venous occlusion in the right eye appeared during admission. Symmetrical paresthesia in the limbs in combination with severe lower back pain and gastro-intestinal complaints also occurred and remained unexplained despite thorough investigation. We present the unusual combination of culture-confirmed bacterial hemorrhagic pyelonephritis with a blood clot in the proximal right ureter, complicated by retinal vein thrombosis, in a patient who had recovered from SARS-CoV-2-infection five days before presentation. The case is suspect of a COVID-19-related etiology.
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Affiliation(s)
- L. J. van ‘t Hof
- Department of Urology, HagaZiekenhuis, The Hague, The Netherlands
| | - L. Pellikaan
- Department of Urology, HagaZiekenhuis, The Hague, The Netherlands
| | - D. Soonawala
- Department of Internal Medicine/Nephrology, HagaZiekenhuis, The Hague, The Netherlands
| | - H. Roshani
- Department of Urology, HagaZiekenhuis, The Hague, The Netherlands
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