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https://www.readbyqxmd.com/read/28465499/posterior-reversible-encephalopathy-syndrome-after-orthotopic-heart-transplantation-a-case-report
#1
Rigoberto Ramirez, Preetham Reddy Muskula, Mark P Everley
BACKGROUND Calcineurin inhibitor-induced posterior reversible encephalopathy syndrome (PRES) is well described in liver and kidney transplant patients, but there is a paucity of data in heart transplant patients. PRES syndrome in the setting of heart transplantation can occur as early as 5 days following transplantation. CASE REPORT A 32-year-old woman who had recently undergone orthotopic heart transplantation developed headaches, visual disturbances, and generalized tonic clonic seizures 5 days after initiating anti-rejection therapy (tacrolimus, mycophenolate, and prednisone)...
May 3, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28450555/integrating-mri-and-chemokine-receptor-cxcr4-targeted-pet-for-detection-of-leukocyte-infiltration-in-complicated-urinary-tract-infections-after-kidney-transplantation
#2
Thorsten Derlin, Faikah Gueler, Jan H Bräsen, Jessica Schmitz, Dagmar Hartung, Thomas R Herrmann, Tobias L Ross, Frank Wacker, Hans-Jürgen Wester, Marcus Hiss, Hermann Haller, Frank M Bengel, Katja Hueper
Complicated urinary tract infections (UTIs) are frequent in immunosuppressed patients after kidney transplantation and may lead to allograft failure or urosepsis. Non-invasive detection of allograft involvement as well as localization of the primary site of infection are challenging. Therefore, we sought to determine whether molecular-targeted positron emission tomography (PET), combined with diffusion-weighted magnetic resonance imaging (MRI), enables detection of leukocytes in renal allografts. Methods: Thirteen kidney transplant recipients with complicated UTIs underwent both PET with a specific CXCR4-ligand, (68)Ga-Pentixafor, and diffusion-weighted MRI...
April 27, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28427354/unique-case-report-of-a-chromomycosis-and-listeria-in-soft-tissue-and-cerebellar-abscesses-after-kidney-transplantation
#3
J Tourret, N Benabdellah, S Drouin, F Charlotte, J Rottembourg, N Arzouk, A Fekkar, B Barrou
BACKGROUND: Chromomycosis is a rare mycotic infection encountered in tropical and subtropical regions. The disease presents as a slowly-evolving nodule that can become infected with bacteria. Here, we describe a unique association of abscesses caused by a chromomycosis and Listeria monocytogenes in a kidney transplant recipient, and didactically expose how the appropriate diagnosis was reached. CASE PRESENTATION: A 49-year old male originating from the Caribbean presented a scalp lesion which was surgically removed in his hometown where it was misdiagnosed as a sporotrichosis on histology, 3 years after he received a kidney transplant...
April 20, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28411307/ferumoxytol-is-not-retained-in-kidney-allografts-in-patients-undergoing-acute-rejection
#4
Maryam Aghighi, Laura Pisani, Ashok J Theruvath, Anne M Muehe, Jessica Donig, Ramsha Khan, Samantha J Holdsworth, Neeraja Kambham, Waldo Concepcion, Paul C Grimm, Heike E Daldrup-Link
PURPOSE: To evaluate whether ultrasmall superparamagnetic iron oxide nanoparticle (USPIO)-enhanced magnetic resonance imaging (MRI) can detect allograft rejection in pediatric kidney transplant patients. PROCEDURES: The USPIO ferumoxytol has a long blood half-life and is phagocytosed by macrophages. In an IRB-approved single-center prospective clinical trial, 26 pediatric patients and adolescents (age 10-26 years) with acute allograft rejection (n = 5), non-rejecting allografts (n = 13), and normal native kidneys (n = 8) underwent multi-echo T2* fast spoiled gradient-echo (FSPGR) MRI after intravenous injection (p...
April 14, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28374076/selection-for-biopsy-of-kidney-transplant-patients-by-diffusion-weighted-mri
#5
Philipp Steiger, Sebastiano Barbieri, Anja Kruse, Michael Ith, Harriet C Thoeny
OBJECTIVES: To assess retrospectively whether diffusion-weighted magnetic resonance imaging (DW-MRI) allows physicians to determine the severity of histopathologic findings in biopsies of renal allograft patients with deteriorating renal function. METHODS: Forty consecutive kidney transplant patients underwent DW-MRI and biopsy. Patients were assigned to one group with severe and to another group with normal or mild histopathologic findings. These two groups were compared based on a qualitative DW-MRI assessment (homo-/heterogeneity) and the combination of qualitative and quantitative DW-MRI parameters (ADC, and intravoxel incoherent motion, IVIM, parameters: D, f, D*)...
April 3, 2017: European Radiology
https://www.readbyqxmd.com/read/28342287/longitudinal-evaluation-of-perfusion-changes-in-acute-and-chronic-renal-allograft-rejection-using-arterial-spin-labeling-in-translational-mouse-models
#6
Katja Hueper, Martina Schmidbauer, Anja Thorenz, Jan H Bräsen, Marcel Gutberlet, Michael Mengel, Dagmar Hartung, Rongjun Chen, Martin Meier, Hermann Haller, Frank Wacker, Song Rong, Faikah Gueler
PURPOSE: To examine the longitudinal changes of renal perfusion due to acute and chronic renal allograft rejection by using arterial spin labeling (ASL) MRI in translational mouse models of isogenic and allogenic kidney transplantation (ktx). MATERIALS AND METHODS: Acute rejection was induced by allogenic ktx of C57BL/6 (B6)-kidney grafts to BALB/c-recipients with prolonged cold ischemia (CIT) of 60 minutes (n = 13). To induce chronic rejection BALB/c-kidneys were transplanted into B6-recipients with short CIT of 30 minutes (n = 22)...
March 25, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28324003/biliary-anomalies-in-patients-with-hnf1b-diabetes
#7
Jarno Lt Kettunen, Helka Parviainen, Päivi J Miettinen, Martti Färkkilä, Marjo Tamminen, Pia Salonen, Eila Lantto, Tiinamaija Tuomi
Context: The clinical spectrum of organogenetic anomalies associated with HNF1B mutations is heterogeneous. Besides cystic kidney disease, diabetes, and various other manifestations, odd cases of mainly neonatal and post-transplant cholestasis have been described. The biliary phenotype is incompletely defined. Objective: To systematically characterize HNF1B-related anomalies in the bile ducts by imaging with MRI or MRCP. Setting and Patients: Fourteen patients with HNF1B mutations in the catchment area of the Helsinki University hospital were evaluated with upper abdominal MRI and MRCP...
March 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28150359/potential-role-of-tracing-stem-cell-transplantation-and-effects-on-the-immune-cell-function-of-ferumoxytol-combining-with-heparin-and-protamine-in-vivo-in-vitro
#8
Jingyuan Zhao, Xin Guan, Yang Liu, Hua Piao, Rutao Liu, Xiang Zhou, Bo Sun, Yue Du, Jing Liu
Cell labeling and tracing have played an increasingly important role in the field of stem cell transplantation. Nanocomplexes combining three Food and Drug Administration (FDA)-approved drugs: heparin (H), protamine (P), and ferumoxytol (F) (HPF nanocomplexes) display high labeling efficiency in human adipose tissue-derived stem cells (hADSCs), but their biological safety has not been determined. In this study, we tested the labeling efficiency of HPF in hADSCs through in vitro cytotoxicity studies and in vivo murine preclinical studies using HPF-labeled hADSCs...
April 2017: Cell Biology International
https://www.readbyqxmd.com/read/28104164/clinicopathologic-impact-of-early-medullary-ray-injury-in-patients-following-kidney-transplantation
#9
T Niikura, A Kobayashi, M Kawabe, A Katsuma, T Yamakawa, H Katsumata, A Mafune, Y Nakada, I Yamamoto, Y Tanno, I Ohkido, M Okumi, H Ishida, H Yamamoto, T Yokoo, K Tanabe
BACKGROUND: Previously, we explored the histopathologic characteristics of medullary ray injury (MRI) inducing interstitial fibrosis and tubular atrophy (IF/TA) to determine its etiologies, which include calcineurin inhibitor (CNI) toxicity and urologic complications. However, we did not examine the effects of these etiologies on long-term kidney allograft prognosis, because biopsy timing differed among cases. AIM: We examined the influence of early MRI on kidney allograft prognosis using protocol biopsies taken within a 3-month time frame...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28104123/diffusion-tensor-imaging-mri-with-spin-echo-sequence-and-long-duration-measurement-for-evaluation-of-renal-fibrosis-in-a-rat-fibrosis-model
#10
J-Y Kaimori, Y Isaka, M Hatanaka, S Yamamoto, N Ichimaru, A Fujikawa, H Shibata, A Fujimori, S Miyoshi, T Yokawa, K Kuroda, T Moriyama, H Rakugi, S Takahara
BACKGROUND: Renal fibrosis (RF) is a well-known marker for chronic kidney disease (CKD) progression, including chronic renal injury after renal transplantation. However, invasive biopsy is an available examination for evaluation of RF. Diffusion MRI was once recognized as a promising option for RF. However, it is now controversial for RF evaluation in a unilateral ureteral obstruction (UUO) model. METHODS: To seek an optimal imaging method applicable for RF in UUO model kidneys, we attempted a series of MRI methods, including proton density-weighted imaging, T1-weighted imaging, T2-weighted imaging, T2*-weighted imaging, diffusion-weighted imaging, and diffusion tensor imaging (DTI)...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/27966039/magnetic-resonance-tissue-phase-mapping-demonstrates-altered-left-ventricular-diastolic-function-in-children-with-chronic-kidney-disease
#11
Charlotte Gimpel, Bernd A Jung, Sabine Jung, Johannes Brado, Daniel Schwendinger, Barbara Burkhardt, Martin Pohl, Katja E Odening, Julia Geiger, Raoul Arnold
BACKGROUND: Echocardiographic examinations have revealed functional cardiac abnormalities in children with chronic kidney disease. OBJECTIVE: To assess the feasibility of MRI tissue phase mapping in children and to assess regional left ventricular wall movements in children with chronic kidney disease. MATERIALS AND METHODS: Twenty pediatric patients with chronic kidney disease (before or after renal transplantation) and 12 healthy controls underwent tissue phase mapping (TPM) to quantify regional left ventricular function through myocardial long (Vz) and short-axis (Vr) velocities at all 3 levels of the left ventricle...
February 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/27932167/gangliocytoma-presenting-with-tacrolimus-neurotoxicity-in-a-renal-transplant-recipient-case-report
#12
S Alagoz, S Gulcicek, M Oruc, S Trabulus, N Seyahi
Tacrolimus is a widely used macrolide immunosuppressant in transplant surgery, with mild and major neurologic side effects. A 21-year-old woman had undergone preemptive transplantation of a kidney from her mother. On the 1st postoperative day, the patient had headache, nausea, vomiting, and agitation. Magnetic resonance imaging (MRI) of the brain showed hyperintensity and a lesion in the right mesial temporal lobe. After we switched from tacrolimus to cyclosporine, the symptoms regressed. Persistence of the lesion, confirmed by repeated MRI, required that the patient be operated on...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27864568/value-of-dynamic-mri-using-the-ktrans-technique-for-assessment-of-native-kidneys-in-pre-emptive-renal-transplantation
#13
Recep Sade, Mecit Kantarci, Leyla Karaca, Aylin Okur, Hayri Ogul, Mustafa Keles, Erdem Çankaya, Arif Kursad Ayan
Background Different non-invasive imaging techniques such as Doppler ultrasonography and renal scintigraphy are commonly employed to assess allograft function and associated complications. However, all such methods lack sufficient specificity to discriminate between residual renal function of native kidneys. Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) evaluates signal dynamics during the passage of contrast material through the renal cortex, medulla, and collecting system. Purpose To investigate the value of DCE 3T MRI using a quantitative pharmacokinetic parameter (Ktrans) for the assessment of native kidneys before and after pre-emptive renal transplantation...
January 1, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27822324/sonographically-unusual-breast-carcinomas-2-case-reports
#14
Gozde Arslan, Levent Celik
BACKGROUND: For infiltrative breast lesions; sonography might not always be as helpful as mammography and MRI (magnetic resonance imaging). For higher sensitivity and specificity, these 3 imaging methods should be carried out together. Radiologists should be aware of the patient's history and complaints. Patients who have a specific history like a long-term drug treatment or a palpable tumour should be approached differently. CASE REPORT: We would like to present 2 cases with atypical sonographic findings...
2016: Polish Journal of Radiology
https://www.readbyqxmd.com/read/27793122/acute-pancreatitis-associated-with-everolimus-after-kidney-transplantation-a-case-report
#15
Francesco Fontana, Gianni Cappelli
BACKGROUND: Acute pancreatitis (AP) following KT is a rare and often fatal complication of the early post-transplant period. Common causative factors for AP are rare after KT; anti-rejection drugs as CyA, prednisone and MMF have been implicated, although evidence is not strong and we found no reports on possible causative role for mTOR inhibitors. CASE PRESENTATION: A 55-year-old Caucasian man with end-stage renal disease due to idiopathic membrano-prolipherative glomerulonephritis underwent single kidney transplantation (KT) from cadaveric donor...
October 28, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27777772/urothelial-carcinoma-of-donor-origin-in-a-kidney-transplant-patient
#16
Rosa M Michel Ortega, Daynna J Wolff, Cynthia A Schandl, Harry A Drabkin
BACKGROUND: Malignancy after transplantation is an uncommon multifactorial occurrence. Immunosuppression to prevent graft rejection is described as a major risk factor in malignancy development in the post-transplant state. Donor-derived malignancy is a rare reported complication. Herein, we review our patient history and discuss diagnostic strategies and the implications of immunosuppression for donor-derived malignancy. CASE PRESENTATION: This is a 69-year-old man with post-renal-transplant urothelial carcinoma determined to be of donor origin...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27651963/an-atypical-presentation-of-a-male-with-oral-facial-digital-syndrome-type-1-related-ciliopathy
#17
Sheena Sharma, Jennifer M Kalish, Ethan M Goldberg, Francis Jeshira Reynoso, Madhura Pradhan
Background. Oral-facial-digital syndrome type 1 (OFD1) is a rare condition with X-linked dominant inheritance caused by mutations in the Cxorf5 (OFD1) gene. This gene encodes the OFD1 protein located within centrosomes and basal bodies of primary cilia. Approximately 15-50% of patients with OFD1 progress to end-stage kidney disease following development of polycystic changes within the kidneys. This condition almost always causes intrauterine lethality in males. Description of Case Diagnosis and Treatment. A Caucasian male aged 9 years and 9 months presented with increased urinary frequency, increased thirst, and decreased appetite...
2016: Case Reports in Nephrology
https://www.readbyqxmd.com/read/27636770/imaging-the-kidney-using-magnetic-resonance-techniques-structure-to-function
#18
Huda Mahmoud, Charlotte Buchanan, Susan T Francis, Nicholas M Selby
PURPOSE OF REVIEW: MRI can noninvasively assess the structure and function of the kidney in a single MRI scan session. This review summarizes recent advancements in functional renal MRI techniques, with a particular focus on clinical applications. RECENT FINDINGS: A number of MRI techniques now provide measures of relevance to the pathophysiology of kidney disease. Diffusion-weighted imaging, used in chronic kidney disease and renal transplantation, shows promise as a measure of renal fibrosis...
November 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27632553/multiparametric-functional-mri-non-invasive-imaging-of-inflammation-and-edema-formation-after-kidney-transplantation-in-mice
#19
Katja Hueper, Marcel Gutberlet, Jan Hinrich Bräsen, Mi-Sun Jang, Anja Thorenz, Rongjun Chen, Barbara Hertel, Amelie Barrmeyer, Martina Schmidbauer, Martin Meier, Sibylle von Vietinghoff, Abedalrazag Khalifa, Dagmar Hartung, Hermann Haller, Frank Wacker, Song Rong, Faikah Gueler
BACKGROUND: Kidney transplantation (ktx) in mice is used to learn about rejection and to develop new treatment strategies. Past studies have mainly been based on histological or molecular biological methods. Imaging techniques to monitor allograft pathology have rarely been used. METHODS: Here we investigated mice after isogenic and allogenic ktx over time with functional MRI with diffusion-weighted imaging (DWI) and mapping of T2-relaxation time (T2-mapping) to assess graft inflammation and edema formation...
2016: PloS One
https://www.readbyqxmd.com/read/27290710/-correlation-between-susceptibility-weighted-imaging-manifestation-and-serum-cystatin-c-for-delayed-graft-function
#20
J Sun, Z Y Xing, S N Yu, J Chen, T T Zha, M Fan, J H Ma, W Xing
OBJECTIVE: To explore the correlation between susceptibility weighted imaging (SWI) manifestation and serum cystatin C level for delayed graft function (DGF). METHODS: The conventional MRI, SWI and serum cystatin C of 27 cases with DGF in nephrotransplantation center in Third Affiliated Hospital of Suzhou University from September 2014 and August 2015 were retrospectively analyzed.By contrasting conventional MRI images of transplanted kidney in DGF, the imaging manifestations of benign tumors such as cysts and angiomyolipomas were excluded on SWI images, and then making the renal cortex as the reference, if the abnormal signal lesions were found in the transplanted kidney, the location and signal intensity would be analyzed...
June 7, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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