scholarly journals Metanephric Adenoma: A Case Report of a Rare Benign Renal Tumor

2021 ◽  
Vol 14 (7) ◽  
Author(s):  
Farzad Allameh ◽  
Mahsa Ahadi ◽  
Saba Faraji ◽  
Seyyed Ali Hojjati
Keyword(s):  
Renal Tumor ◽  
Papillary Renal Cell Carcinoma ◽  
Kidney Tumor ◽  
Pathological Findings ◽  
Metanephric Adenoma ◽  
Case Presentation ◽  
Ultrasound Study ◽  
Contrast Enhanced ◽  
The Mean

Introduction: Metanephric adenoma (MA) is a rare benign kidney tumor with an excellent prognosis, which is usually diagnosed incidentally with no symptoms. The mean age of patients with MA is about 41 years, ranging from 5 months to 83 years in previous studies. Case Presentation: In this study, we present the case of a 29-year-old woman with a diagnosis of MA after nephrectomy. The ultrasound study showed a hyperechoic mass. The intravenous (IV) contrast-enhanced abdominopelvic computed tomography (CT) scan showed a hypodense mass. Based on the results of pathological features and immunohistochemistry (IHC) (positive vimentin, WT1, and PAX8), the diagnosis of MA was established. Conclusions: The diagnosis of MA is commonly based on pathological findings. Therefore, if MA is suspected, renal biopsy, partial nephrectomy, or follow-up of the patient can be used. However, further studies are needed to differentiate MA from papillary renal cell carcinoma and nephroblastoma before taking aggressive measures.

scholarly journals Renal Endometriosis Mimicking Cystic Renal Tumor: Case Report and Literature Review

2021 ◽  
Vol 8 ◽  
Author(s):  
Ye Yang ◽  
Xinxin Zhao ◽  
Ying Huang
Keyword(s):  
Renal Mass ◽  
Clinical Symptoms ◽  
Renal Tumor ◽  
Cystic Mass ◽  
Case Presentation ◽  
Contrast Enhanced ◽  
The Right ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography

Background: Endometriosis mainly affects female pelvic tissues and organs, and the presence of endometriosis in the kidney is extremely rare.Case Presentation: We report a case of a 48-year-old woman who presented with intermittent hematuria. She was found to have a cystic mass on renal ultrasonography, and contrast-enhanced computed tomography (CT) showed slight enhancement of the cystic wall and septa. These findings were indicative of cystic renal tumor. The patient subsequently underwent partial right nephrectomy. Histopathology revealed endometriosis of the right renal parenchyma. The patient recovered well and had no evidence of a recurrent renal mass at the 3 months' follow up.Conclusion: The possibility of renal endometriosis should be considered in a female patient with a cystic renal mass and clinical symptoms related to the menstrual cycle.

scholarly journals Possibilities of Multiparametric Ultrasound Study with Contrast Enhanced in the Diagnostics of Cistic Kidney Lesions

2021 ◽  
Vol 4 (3) ◽  
pp. 35-43
Author(s):  
R. A. Kadyrleev ◽  
S. S. Bagnenkо ◽  
E. A. Busko ◽  
E. V. Kostromina ◽  
L. N. Shevkunov ◽  
...  
Keyword(s):  
Color Doppler ◽  
Renal Cysts ◽  
Color Doppler Imaging ◽  
Doppler Imaging ◽  
Cystic Kidney ◽  
Gray Scale ◽  
Ultrasound Study ◽  
Contrast Enhanced ◽  
Contrast Ultrasound

Purpose: To compare the capabilities and evaluate the effectiveness of gray-scale B-mode, Doppler mapping and contrast enhanced in the assessment of cystic renal lesions.Material and methods: Ultrasound examination (US) was performed in 61 patients with cystic kidney formations (category Bosniak ≥ II). Cysts of categories Bosniak ≥ III were histologically verified, rest (categories II–IIF) were under follow up. All patients underwent gray-scale ultrasound, color Doppler imaging and contrast enhanced (CEUS).Results: The efficiency of the B mode was: sensitivity 55.6 %; specificity 72.1 %; accuracy 62.3 %, in the CDI mode these indicators were 52.8; 80.1; 63.9 %, respectively. Contrast ultrasound significantly increased the capabilities of the method, and also made it possible to evaluate cystic formations according to the Bosniak criteria with indicators of the effectiveness of the method up to 100.0; 92.0; 96.7 %, respectively.Conclusions: CEUS demonstrated high informative value in the assessment of renal cystic formations in comparison with native ultrasound and Doppler modes, and therefore the technique should be considered as promising for inclusion in the algorithm of examination of complex renal cysts. 

scholarly journals Percutaneous ultrasound-guided laser ablation for the treatment of cervical tuberculous lymphadenitis: a pilot study

2019 ◽  
Vol 47 (4) ◽  
pp. 1512-1520
Author(s):  
Gaoyi Yang ◽  
Jianhua Fang ◽  
Tianzhuo Yu ◽  
Ying Zhang ◽  
Wenzhi Zhang ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Adverse Effects ◽  
Lymph Nodes ◽  
Tuberculous Lymphadenitis ◽  
Good Tolerability ◽  
Minimal Invasiveness ◽  
Contrast Enhanced ◽  
The Mean ◽  
Larger Sample

Objective This study was performed to assess the feasibility, effectiveness, and safety of percutaneous ultrasound (US)-guided laser ablation (LA) for the treatment of cervical tuberculous lymphadenitis (CTBL). Methods We retrospectively reviewed 11 patients with CTBL (mean age, 32.0 ± 8.6 years; range, 18–47 years) who underwent percutaneous US-guided LA from June 2014 to December 2016 with a subsequent 12-month follow-up. We assessed the mean volume reduction and contrast-enhanced US (CEUS) changes of the target lymph nodes as well as the tolerability and adverse effects of LA. Results The mean ablation energy was 522 ± 312 J (range, 204–1317 J). All 17 enrolled target lymph nodes were completely non-enhanced after LA treatment as detected by CEUS, indicating complete ablation of all lymph nodes (100%). The target lymph nodes significantly decreased in volume by a mean of 74.0% ± 15.6% from baseline to 12 months after LA. The LA procedure was well tolerated, and none of the 11 patients developed severe complications during the 12-month follow-up. Conclusion Percutaneous US-guided LA for the treatment of CTBL exhibits good tolerability, minimal invasiveness, and few adverse effects. Further investigations with larger sample sizes and longer follow-up periods are warranted to confirm these findings.

scholarly journals Multimodality Fusion with MRI, CT, and Ultrasound Contrast for Ablation of Renal Cell Carcinoma

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Hayet Amalou ◽  
Bradford J. Wood
Keyword(s):  
Renal Tumor ◽  
Intraoperative Imaging ◽  
Kidney Tumor ◽  
Fusion Technology ◽  
Image Guided ◽  
Iodinated Contrast ◽  
Contrast Enhanced ◽  
Combined Use ◽  
Contrast Exposure ◽  
Different Parts

Fusion technology with electromagnetic (EM) tracking enables navigation with multimodality feedback that lets the operator use different modalities during different parts of the image-guided procedure. This may be particularly helpful in patients with renal insufficiency undergoing kidney tumor ablation, in whom there is a desire to minimize or avoid nephrotoxic iodinated contrast exposure. EM tracking software merges and fuses different imaging modalities such as MRI, CT, and ultrasound and can also display the position of needles in real time in relation to preprocedure imaging, which may better define tumor targets than available intraoperative imaging. EM tracking was successfully used to ablate a poorly visualized renal tumor, through the combined use of CT, gadolinium-enhanced MR, and contrast-enhanced US imaging to localize the tumor.

Percutaneous US-Guided Renal Cryoablation Using 3D Modeling

2017 ◽  
Vol 84 (3) ◽  
pp. 174-178
Author(s):  
Leonid M. Rapoport ◽  
Shmuel Cytron ◽  
Mikhail E. Enikeev ◽  
Dmitry G. Tsarichenko ◽  
Dmitry V. Enikeev ◽  
...  
Keyword(s):  
Renal Tumor ◽  
Histological Finding ◽  
High Attenuation ◽  
Results Of Treatment ◽  
Contrast Enhanced ◽  
Mass Size ◽  
Enhanced Computed Tomography ◽  
Renal Doppler ◽  
Contrast Enhanced Computed Tomography

Introduction The article describes the first experience of performing percutaneous ultrasound (US)-guided cryoablation of renal tumor and assesses the safety and short-term results of treatment. Materials and Methods Twelve patients were subjected to US-guided cryoablation of renal tumor in 2015. The tumor size in 11 patients was up to 3.0 cm (T1а); in one female patient, 4.5 cm (T1b). Tumors were assessed according to the PADUA score. In eight patients, it was 6-7 (low); in three patients, 8-9 (average); in one, 10 (high). All the patients underwent US examination using a FlexFocus 800 apparatus with convex abdominal transducers. Before surgery and 6 months later, all the patients underwent renal Doppler US and contrast-enhanced computed tomography. Results The average cryoablation time was 60 min. Seven operations were performed under spinal anesthesia and five operations under local anesthesia. The follow-up period lasted 8 months on average. According to the ultrasonography and Doppler findings, after 6 months, the tumor (T1a) in 11 patients reduced in size by an average of 7-8 mm and had no blood supply. T1b patient's mass size reduces from 4.5 to 3.7 cm; however, a 1.5 cm area with a high attenuation gradient of the contrast medium was visualized. Later, the patient was subjected to laparoscopic renal resection. Histological finding revealed clear-cell carcinoma. Conclusions We consider percutaneous US-guided cryoablation as a method of choice for patients with stage T1a renal tumor localized on the posterior or lateral surface in the inferior or middle segment without sinus involvement and PADUA <9.

scholarly journals A CASE PRESENTATION: RADIOLOGICAL AND PATHOLOGICAL ROLE IN DIAGNOSIS OF BENING RENAL MASS – ONCOCYTOMA

2020 ◽  
pp. 63-64
Author(s):  
B. Keerthana ◽  
N. Siva Durgesh ◽  
B. Anji Naik
Keyword(s):  
Renal Mass ◽  
Renal Tumor ◽  
Tumor Incidence ◽  
Pathological Examination ◽  
Renal Oncocytoma ◽  
Pathological Findings ◽  
Kidney Tumors ◽  
Case Presentation ◽  
Difficult Diagnosis ◽  
Radiological Features

Oncocytoma is benign renal tumor. Incidence of oncocytoma is 3%– 7% among all the kidney tumors. A 45 year old female was presented with complaints of pain in right loin since 1 year. Conclusion Renal oncocytoma is difficult diagnosis to conclude with only radiological features and pathological findings, the diagnosis can be confirmed only by chemical staining in histo pathological examination, as radiologically oncocytoma closely resembles RCC and is challenging to differentiate between the two.

scholarly journals Adult Nephroblastoma with Predominant Epithelial Component: A Differential Diagnostic Candidate of Papillary Renal Cell Carcinoma and Metanephric Adenoma—Report of Three Cases

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Shiho Watanabe ◽  
Hiroshi Naganuma ◽  
Michio Shimizu ◽  
Satoshi Ota ◽  
Shin-ichi Murata ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Tumor Cells ◽  
Renal Cell ◽  
Benign Tumor ◽  
Renal Tumor ◽  
Papillary Renal Cell Carcinoma ◽  
Metanephric Adenoma ◽  
Old Females ◽  
Epithelial Element

Although nephroblastoma is the commonest renal tumor of childhood, it is rare in adults. In cases of predominantly epithelial type occurring in adulthood, it might be difficult to distinguish it from papillary renal cell carcinoma and metanephric adenoma. Here, we report three cases of adult epithelial nephroblastoma in 24-, 76-, and 21-year-old females. Histologically, the tumors were composed of papillotubular architectures of small and uniform tumor cells with high nucleocytoplasmic ratio without blastemal element. Immunohistochemically, the tumor cells were positive for WT-1 and CD57 but negative for AMACR, which was helpful to exclude the possibility of papillary renal cell carcinoma. Metanephric adenoma is a benign tumor, which can be distinguished by the observation of the cellular atypism and growth pattern. However, nephroblastoma with predominant epithelial element mimics the malignant counterpart of metanephric adenoma, that is, “metanephric adenocarcinoma.”

A Composite Renal Tumor: Metanephric Adenofibroma, Wilms Tumor, and Renal Cell Carcinoma: A Missing Link?

2012 ◽  
Vol 15 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Maria Laura Galluzzo ◽  
Maria T. Garcia de Davila ◽  
Gordan M. Vujanić
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Renal Tumor ◽  
Wilms Tumor ◽  
Papillary Renal Cell Carcinoma ◽  
Renal Tumors ◽  
Metanephric Adenoma ◽  
Missing Link ◽  
Additional Support

A coexistence of different renal tumors has rarely been reported. The most commonly described association is of Wilms tumor and renal cell carcinoma. Metanephric adenofibroma has also been associated with Wilms tumor or papillary renal cell carcinoma. Another reported association is metanephric adenoma and papillary renal cell carcinoma with sarcomatoid dedifferentiation. Herein we describe a complex renal tumor containing areas of metanephric adenofibroma, Wilms tumor, and undifferentiated renal cell carcinoma in a previously healthy 18-year-old boy. The tumor showed histologic and immunohistochemical features of these 3 different tumors, offering additional support to the view that these 3 tumors are related.

scholarly journals A rare cause of chronic dysphagia: pulmonary inflammatory myofibroblastic tumor with distal esophagus invasion

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yi-Min Gu ◽  
Long-Qi Chen
Keyword(s):  
Inflammatory Myofibroblastic Tumor ◽  
Distal Esophagus ◽  
Case Presentation ◽  
Contrast Enhanced ◽  
Rare Lesion ◽  
Children And Young Adults ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Pulmonary Inflammatory Myofibroblastic Tumor

Abstract Background Inflammatory myofibroblastic tumor (IMT) is rare intermediate tumor, which happens mostly in children and young adults. Case presentation Reported is the successful treatment of a 29-year-old man presented with progressively dysphagia and weight loss. No other abnormal symptoms were observed. The contrast enhanced computed tomography (CT) revealed a dumbbell-shaped lesion between lung and esophagus. Finally, it was pathologically diagnosed as pulmonary IMT invading to the distal esophagus after operation. The patient underwent partial esophagectomy and left lower lobectomy, and was discharged on 10th postoperative day. Conclusions IMT is a rare lesion that usually occurs in the lung, but pulmonary IMT with distal esophagus invasion has not been described previously. Discriminating untypical symptom, completed resection, pathological expertise and closed follow-up will reach the successful diagnosis and treatment.

Dynamic Contrast-Enhanced Magnetic Resonance Imaging of Advanced Cervical Carcinoma: The Advantage of Perfusion Parameters From the Peripheral Region in Predicting the Early Response to Radiotherapy

2018 ◽  
Vol 28 (7) ◽  
pp. 1342-1349 ◽  
Author(s):  
Zhaoguang Zhang ◽  
Zhengang Wang ◽  
Rongrong Zhao
Keyword(s):  
Cervical Carcinoma ◽  
Central Region ◽  
Early Response ◽  
Peripheral Region ◽  
Resonance Imaging ◽  
Dynamic Contrast Enhanced ◽  
Advanced Cervical Carcinoma ◽  
Contrast Enhanced ◽  
The Mean

ObjectiveThis study aimed to investigate the importance of perfusion parameters from the peripheral region in predicting the early response to radiotherapy for advanced cervical carcinoma by using dynamic contrast-enhanced (DCE) perfusion magnetic resonance imaging (MRI).MethodsOne hundred eight patients with advanced cervical carcinoma were enrolled into this study. Dynamic contrast-enhanced perfusion MR examinations were performed for all the patients before radiotherapy. Perfusion parameters were obtained from the central region and the peripheral region of tumor respectively. After radiotherapy, the patients were classified into responders and nonresponders according to tumor shrinkage on the basis of follow-up MRI examination. The mean follow-up time lasted 12 months. The perfusion parameters were compared between the 2 groups. The relationship between perfusion parameters from 2 different regions of tumor and treatment effect was analyzed.ResultsThe mean value of volume transfer constant (Ktrans), rate constant (Kep) or extravascular extracellular volume fraction (Ve) from the peripheral region was higher than that from the central region of tumor, respectively (P = 0.01, 004, 0.03). Responders had higher Ktransperipheral (Ktrans from the peripheral region) and Ktranscentral (Ktrans from the central region) values than nonresponders (P = 0.04, 0.01). Responders had higher Kepperipheral (Kep from the peripheral region) than nonresponders (P = 0.03). Responders had lower Veperipheral (Ve from the peripheral region) than nonresponders (P = 0.04). At logistic regression analysis, the perfusion parameters that had predicting value were Ktransperipheral, Veperipheral, Kepperipheral and Ktranscentral according to diagnostic potency.ConclusionsCompared with perfusion parameters from the central region of tumor, perfusion parameters from the peripheral region are more valuable in predicting the early response to radiotherapy for advanced cervical carcinoma.

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