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Angiomyolipoma

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https://www.readbyqxmd.com/read/29154983/giant-renal-angiomyolipoma-following-ovarian-stimulation-therapy
#1
Elieser H Watanabe, Precil D Neves, Bruno E Balbo, Carlos A Sampaio, Luiz F Onuchic
Renal angiomyolipomas (AML) are benign tumors with higher prevalence in women. Female hormones have been shown to induce AML enlargement. This case refers to a 40-year-old woman with four left kidney AMLs, the larger ones with 1.0 and 1.3 cm. Ten months after ovarian stimulation for egg harvesting, a computed tomography revealed an 18-cm AML with large-caliber vessels. Given her high risk of AML bleeding, the patient was submitted to selective arterial embolization, which turned out unsuccessful, supporting a plan of nephron-sparing surgery...
November 15, 2017: Urology
https://www.readbyqxmd.com/read/29151912/duodenal-angiomyolipoma-with-multiple-systemic-vascular-malformations-and-aneurysms-a-case-report-and-literature-review
#2
Yiqiu Wang, Xiuli Zhang, Peng Liu, Guan Jiang, Wenlou Liu
Angiomyolipomas (AMLs) are barely benign mesenchymal tumors that usually occur in the kidneys and may be associated with tuberous sclerosis complex (TSC). Extrarenal AMLs are markedly rare and infrequently observed in the duodenum. In the present case report, a 22-year-old female patient with duodenal AMLs presenting multiple systemic vascular malformations and aneurysms is described. The patient had a medical history of aneurysm rupture of the right subclavian artery and no other manifestation of TSC. Surgical intervention was performed...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29134348/machine-learning-based-quantitative-texture-analysis-of-ct-images-of-small-renal-masses-differentiation-of-angiomyolipoma-without-visible-fat-from-renal-cell-carcinoma
#3
Zhichao Feng, Pengfei Rong, Peng Cao, Qingyu Zhou, Wenwei Zhu, Zhimin Yan, Qianyun Liu, Wei Wang
OBJECTIVE: To evaluate the diagnostic performance of machine-learning based quantitative texture analysis of CT images to differentiate small (≤ 4 cm) angiomyolipoma without visible fat (AMLwvf) from renal cell carcinoma (RCC). METHODS: This single-institutional retrospective study included 58 patients with pathologically proven small renal mass (17 in AMLwvf and 41 in RCC groups). Texture features were extracted from the largest possible tumorous regions of interest (ROIs) by manual segmentation in preoperative three-phase CT images...
November 13, 2017: European Radiology
https://www.readbyqxmd.com/read/29133867/evidence-of-renal-angiomyolipoma-neoplastic-stem-cells-arising-from-renal-epithelial-cells
#4
Ana Filipa Gonçalves, Mojca Adlesic, Simone Brandt, Tomas Hejhal, Sabine Harlander, Lukas Sommer, Olga Shakhova, Peter J Wild, Ian J Frew
Renal angiomyolipomas (AML) contain an admixture of clonal tumour cells with features of several different mesenchymal lineages, implying the existence of an unidentified AML neoplastic stem cell. Biallelic inactivation of TSC2 or TSC1 is believed to represent the driving event in these tumours. Here we show that TSC2 knockdown transforms senescence-resistant cultured mouse and human renal epithelial cells into neoplastic stem cells that serially propagate renal AML-like tumours in mice. mTOR inhibitory therapy of mouse AML allografts mimics the clinical responses of human renal AMLs...
November 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29132117/an-extrapulmonary-manifestation-of-lymphangioleiomyomatosis-a-rare-case-report
#5
L Volkan Tümay, Osman Serhat Güner, Abdullah Zorluoğlu
Lymphangioleiomyomatosis (LAM) is a rare and fatal disease which occurs almost exclusively in young women. The disease often affects lungs and most of the patients die from respiratory failure. It is often initially misdiagnosed as asthma or chronic obstructive pulmonary disease. The most common presentations of pulmonary LAM (P-LAM) include dyspnea and coughing. Chylothorax and spontaneous pneumothorax may be seen in advanced cases. Although rare, it may present with extrapulmonary LAM (E-LAM). Renal angiomyolipomas and abdominal lymphadenopathies (LAPs) are common in E-LAM cases...
November 9, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29110191/epithelioid-angiomyolipoma-of-the-liver
#6
Yu-Min Huang, Po-Li Wei, Ray-Jade Chen
No abstract text is available yet for this article.
November 6, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29102941/angiomyolipoma-of-the-liver-a-rare-benign-tumor-treated-with-a-laparoscopic-approach-for-the-first-time
#7
Christos Damaskos, Nikolaos Garmpis, Anna Garmpi, Afroditi Nonni, Stratigoula Sakellariou, Georgios-Antonios Margonis, Eleftherios Spartalis, Dimitrios Schizas, Nikolaos Andreatos, Eleni Magkouti, Alexandros Grivas, Konstantinos Kontzoglou, Matthew J Weiss, Efstathios A Antoniou
BACKGROUND/AIM: Epithelioid angiomyolipoma of the liver is a rare benign mesenchymal tumor that usually presents in adult female patients. It most frequently occurs in the kidney, with the liver being the second most common site of involvement. Angiomyolipoma belongs to a family of tumors arising from perivascular epithelioid cells, but in rare cases may also have cystic features. We report our experience via the first case of hepatic angiomyolipoma treated by laparoscopic approach. PATIENTS AND METHODS: We present the case of a 50-year-old female patient complaining of abdominal pain...
November 2017: In Vivo
https://www.readbyqxmd.com/read/29090203/angiomyolipoma-of-the-glabellar-region
#8
Hyo Joong Kim, Chan Min Chung, Jae Yeon Park, Sung Gyun Jung
Angiomyolipomas are hamartomatous lesions consisting of smooth muscle bundles, thick-walled blood vessels, and mature adipocytes. They are usually found in the kidneys of tuberous sclerosis patients and more rarely in other organs, such as the liver, the oral cavity, the sinonasal tract, the heart, the large intestines, the lungs, and the skin. Cutaneous angiomyolipoma has shown to be very rare and generally occurs at the ends of the digits, the elbows, the ears, and the nose. Herein, we report the first documented case of angiomyolipoma of the glabellar region...
September 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/29090118/the-risks-of-renal-angiomyolipoma-reviewing-the-evidence
#9
REVIEW
Raouf M Seyam, Waleed K Alkhudair, Said A Kattan, Mohamed F Alotaibi, Hassan M Alzahrani, Waleed M Altaweel
Renal angiomyolipoma (RAML), though a rare benign tumor, may impose a significant morbidity or even mortality due to its unique characteristics and the complications subsequent to its treatment. The classic tumor variant is composed of smooth muscular, vascular, and fatty components. The most straightforward diagnosis is when the fat component is abundant and gives a characteristic appearance on different imaging studies. In fat-poor lesions, however, the diagnosis is difficult and presumed a renal cell carcinoma...
2017: Journal of Kidney Cancer and VHL
https://www.readbyqxmd.com/read/29071436/measurement-and-scan-reproducibility-of-parameters-of-intravoxel-incoherent-motion-in-renal-tumor-and-normal-renal-parenchyma-a-preliminary-research-at-3-0%C3%A2-t-mr
#10
Jingjing Pan, Hongtao Zhang, Fengyuan Man, Yanguang Shen, Yingwei Wang, Yan Zhong, Lu Ma, Haiyi Wang, Huiyi Ye
PURPOSE: To prospectively estimate measurement and scan reproducibility of parameters of intravoxel incoherent motion (IVIM) in renal tumors, normal renal cortex, and medulla. METHODS: Twenty-four consecutive patients (twelve males and twelve females; median age 56.7 years, range 32-71 years) with 25 renal tumors (20 renal cell carcinomas, one urothelium carcinoma, three angiomyolipomas, and one oncocytoma) were examined twice using IVIM1 and IVIM2 with 9 and 16 b values, respectively, at 3...
October 25, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/29069911/differentiation-between-papillary-renal-cell-carcinoma-and-fat-poor-angiomyolipoma-a-preliminary-study-assessing-detection-of-intratumoral-hemorrhage-with-chemical-shift-mri-and-t2-weighted-gradient-echo
#11
Sungmin Woo, Sang Youn Kim, Jeong Yeon Cho, Seung Hyup Kim
Background Recent literature suggests that intratumoral hemorrhage detection may be helpful in differentiating papillary renal cell carcinoma (pRCC) from fat-poor angiomyolipoma (fpAML). Purpose To determine whether intratumoral hemorrhage detected using chemical shift magnetic resonance imaging (MRI) and T2*-weighted (T2*W) gradient echo (GRE) can be used to differentiate pRCC from fpAML. Material and Methods This retrospective study included 42 patients with pRCC (n = 28) and fpAML (n = 14) who underwent MRI followed by surgery...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/29067922/primary-adrenal-teratoma-an-unusual-tumor-challenges-in-diagnosis-and-surgical-management
#12
P Ramakant, C Rana, K R Singh, A Mishra
We report a rare case of a 25-year-old lady who presented with right hypochondriac pain associated with weakness for 3 months. Her hormonal evaluation was normal. Computed tomography scan revealed an adrenal mass for which a right open transperitoneal adrenalectomy was performed, and the lesion was diagnosed as mature teratoma on histopathological examination. Teratoma is an unusual neoplasm which arises from one or all the three germ layers. Extragonadal teratomas are rare in adults as compared to children and are mostly retroperitoneal in location, constituting only 4% of all primary teratomas...
October 23, 2017: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/29052596/t-6-11-renal-cell-carcinoma-a-study-of-seven-cases-including-two-with-aggressive-behavior-and-utility-of-cd68-pg-m1-in-the-differential-diagnosis-with-pure-epithelioid-pecoma-epithelioid-angiomyolipoma
#13
Anna Caliò, Matteo Brunelli, Diego Segala, Serena Pedron, Regina Tardanico, Andrea Remo, Stefano Gobbo, Emanuela Meneghelli, Claudio Doglioni, Ondrej Hes, Claudia Zampini, Pedram Argani, Guido Martignoni
Renal cell carcinomas with t(6;11) chromosome translocation involving the TFEB gene are indolent neoplasms which often occur in young patients. In this study, we report seven cases of renal cell carcinoma with TFEB rearrangement, two of whom had histologically proven metastasis. Patients (4F, 3M) ranged in age from 19 to 55 years (mean 37). One patient developed paratracheal and pleural metastases 24 months after surgery and died of disease after 46 months; another one recurred with neoplastic nodules in the perinephric fat and pelvic soft tissue...
October 20, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29046802/tuberous-sclerosis-associated-renal-angiomyolipoma-a-report-of-two-cases-and-review-of-the-literature
#14
Canbin Lin, Lu Jin, Yu Yang, Yu Ding, Xionghui Wu, Liangchao Ni, Shangqi Yang, Yongqing Lai
In the general population, tuberous sclerosis-associated renal angiomyolipoma (RAML) is a rare benign hamartoma with potentially life-threatening complications and a poor prognosis. The two patients reported in the present study, who were diagnosed with bilateral RAML and spontaneous rupture of the RAML with tuberous sclerosis, presented with flank pain, abdominal pain, hemorrhage, hematuria and multiple lesions. The two cases are representative examples of the disease, and highlight the importance of determining the risk of acute hemorrhage in the early stages, and the significance of timely and proper treatment...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29026516/ascending-cholangitis-rare-presentation-of-a-ruptured-right-sided-renal-angiomyolipoma
#15
Stefanie M Croghan, Orla McCormack, Anna L Walsh, Ted McDermott
We report the case of a 46-year-old female who presented to the Emergency Department with acute, painful obstructive jaundice, with evidence of secondary ascending cholangitis. Surprisingly, imaging revealed the clinical picture to be caused not by hepatobiliary pathology, but by external compression of the biliary tree from a ruptured renal angiomyolipoma (AML) of the right kidney. The patient remained haemodynamically stable and conservative management saw resolution of biliary obstruction. We believe this to be the first report of a renal AML presenting in this way...
October 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29024738/new-hybrid-mini-laparoendoscopic-single-site-mi-less-partial-nephrectomy-with-early-unclamped-technique-for-renal-tumors-with-intermediate-padua-score-ideal-phase-2a
#16
Christopher Springer, Felix Kawan, Roberto La Rocca, Nasreldin Mohammed, Paolo Fornara, Vincenzo Mirone, Francesco Greco
OBJECTIVE: To evaluate a new hybrid technique which we defined mini-laparoendoscopic single-site partial nephrectomy (MILESS-PN) for renal masses presenting an intermediate PADUA score. MATERIAL AND METHODS: Forty consecutive cases of MILESS-PN performed between April 2013 and November 2015 were included in this study. MILESS consisted in the simultaneous use of two 3 mm pararectal trocars and an umbilical SILS trocar; the sequence of steps of MILESS-PN was comparable to standard laparoscopic partial nephrectomy...
October 9, 2017: Urology
https://www.readbyqxmd.com/read/29023494/pooled-analysis-of-menstrual-irregularities-from-three-major-clinical-studies-evaluating-everolimus-for-the-treatment-of-tuberous-sclerosis-complex
#17
Steven Sparagana, David N Franz, Darcy A Krueger, John J Bissler, Noah Berkowitz, Karin Burock, J Christopher Kingswood
OBJECTIVES: To determine the impact of everolimus on female fertility, including menstrual irregularities, secondary amenorrhea, and luteinizing and follicle stimulating hormone levels in female patients. DESIGN: A pooled analysis from 3 prospective studies consisting of a core phase (≥6 months) and a long-term follow-up open-label extension. SETTING: One phase 2 single-center and two phase 3 multicenter studies. PARTICIPANTS: Data were obtained from female participants, restricted to those between 10 and 55 years of age, during 1 of 3 of the described clinical trials of everolimus...
2017: PloS One
https://www.readbyqxmd.com/read/29021483/transarterial-embolization-of-a-ruptured-renal-angiomyolipoma
#18
Yasuhiro Taki, Naohiko Imai, Tomohiro Nishi, Yugo Shibagaki
No abstract text is available yet for this article.
October 11, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28993887/the-effect-of-everolimus-on-renal-angiomyolipoma-in-pediatric-patients-with-tuberous-sclerosis-being-treated-for-subependymal-giant-cell-astrocytoma
#19
John J Bissler, David N Franz, Michael D Frost, Elena Belousova, E Martina Bebin, Steven Sparagana, Noah Berkowitz, Antonia Ridolfi, J Christopher Kingswood
BACKGROUND: Patients with tuberous sclerosis complex (TSC) often have multiple TSC-associated hamartomas, particularly in the brain and kidney. METHODS: This was a post hoc analysis of pediatric patients being treated for subependymal giant cell astrocytomas (SEGAs) during the phase 3, randomized, double-blind, placebo-controlled EXIST-1 trial. Patients were initially randomly assigned to receive everolimus 4.5 mg/m(2)/day (target blood trough 5-15 mg/dl) or placebo and could continue in an open-label extension phase...
October 9, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28993216/atypical-epithelioid-angiomyolipoma-a-rare-variant-with-malignant-potential
#20
D Z Sun, S C Campbell
No abstract text is available yet for this article.
October 6, 2017: Urology
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