Acta Radiologica Short Reports最新文献

{"title":"Xanthogranulomatous pyelonephritis mimicking a renal cell carcinoma: a unique and challenging case.","authors":"Nicoletta Dell'Aprovitola,&nbsp;Salvatore Guarino,&nbsp;Walter Del Vecchio,&nbsp;Luigi Camera,&nbsp;Francesco Chiancone,&nbsp;Ciro Imbimbo,&nbsp;Marco Salvatore,&nbsp;Massimo Imbriaco","doi":"10.1177/2047981613513763","DOIUrl":"https://doi.org/10.1177/2047981613513763","url":null,"abstract":"<p><p>We describe an unusual case of xanthogranulomatous pyelonephritis (XGPN) in a 73-year-old woman diagnosed after a blunt abdominal trauma. This case is unique because of the atypical presentation, with absence of symptoms, normal laboratory exams, and unusual computed tomography and magnetic resonance imaging findings. The patient underwent radical nephrectomy because a renal cystic tumor was suspected. Only the histopathological findings suggested the final diagnosis of XGPN. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 1","pages":"2047981613513763"},"PeriodicalIF":0.0,"publicationDate":"2014-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613513763","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32300264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arterial spin labeling perfusion-weighted MRI for long-term follow-up of a cerebral arteriovenous malformation after stereotactic radiosurgery.","authors":"Kazuhiro Shimizu,&nbsp;Nobuyuki Kosaka,&nbsp;Tatsuya Yamamoto,&nbsp;Hiroki Shioura,&nbsp;Toshiaki Kodera,&nbsp;Ken-Ichiro Kikuta,&nbsp;Hirohiko Kimura","doi":"10.1177/2047981613510160","DOIUrl":"https://doi.org/10.1177/2047981613510160","url":null,"abstract":"<p><p>We present a longitudinal series of arterial spin-labeling magnetic resonance imaging (ASL-MRI) in a patient with cerebral arteriovenous malformations (AVMs) treated by stereotactic radiosurgery (SRS). Pretreatment ASL-MRI showed high signal intensity in both the nidus and draining veins, and the latter signal abnormality gradually moved proximally by 14 months after SRS. At 24 months, the signal abnormalities finally disappeared, indicating complete obliteration of the nidus. The hemodynamic changes in the AVM were clearly visualized in the longitudinal ASL-MRI series, thus this non-invasive MR method may be useful not only for detecting AVMs but also for assessment of their response after SRS. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"3 1","pages":"2047981613510160"},"PeriodicalIF":0.0,"publicationDate":"2014-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613510160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32299279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Imaging findings for malignancy-mimicking nodular fasciitis of the breast and a review of previous imaging studies.","authors":"Youn Mi Son,&nbsp;Ji Hae Nahm,&nbsp;Hee Jung Moon,&nbsp;Min Jung Kim,&nbsp;Eun-Kyung Kim","doi":"10.1177/2047981613512830","DOIUrl":"https://doi.org/10.1177/2047981613512830","url":null,"abstract":"<p><p>We report a case of nodular fasciitis of the breast mimicking malignant tumor. A 41-year-old female patient with a palpable mass in the upper center of the left breast present for 1 week visited our hospital. A mammogram showed an oval isodense with a partially indistinct margin. Ultrasonography demonstrated a hypoechoic mass, 8 × 11 mm in size. Breast cancer could not be excluded based on mammographic and ultrasonographic (US) findings. A core needle biopsy and excisional biopsy were performed. Histopathologic examination revealed a diagnosis of nodular fasciitis of the breast. The mammographic and US findings of nodular fasciitis in the breast is reviewed. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 8","pages":"2047981613512830"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613512830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phantom-based quality assurance measurements in B-mode ultrasound.","authors":"Vilma Mannila,&nbsp;Outi Sipilä","doi":"10.1177/2047981613511967","DOIUrl":"https://doi.org/10.1177/2047981613511967","url":null,"abstract":"<p><strong>Background: </strong>Recommended phantom-based quality assurance measurements in B-mode ultrasound (US) may be tedious. For the purpose of cost-effective US quality assurance it is important to evaluate measurements that effectively reflect the quality of US scanner.</p><p><strong>Purpose: </strong>To find out which recommended phantom-based quality assurance measurements are effective in detecting dead or weak transducer elements or channels in US scanners when visual image analysis and manual measurements are used.</p><p><strong>Material and methods: </strong>Altogether 66 transducers from 33 US scanners were measured using a general purpose phantom and a transducer tester. The measurements were divided into two groups. Group I consisted of phantom-based uniformity measurement, imaging the air with a clean transducer (air image) and measuring the transducer with the transducer tester, and group II of phantom-based measurements of depth of penetration, beam profile, near field, axial and lateral resolution, and vertical and horizontal distance accuracy. The group II measurements were compared to group I measurements.</p><p><strong>Results: </strong>With group I measurements, the results with 20% of the transducers were found defective. With 35% of the transducers the results were considered defective in group II measurements. Concurrent flaws in both groups were found with 11% of the transducers.</p><p><strong>Conclusion: </strong>Phantom-based measurements of depth of penetration, beam profile, near field, axial and lateral resolution, and vertical and horizontal distance accuracy did not consistently detect dead or weak transducer elements or channels in US scanners.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 8","pages":"2047981613511967"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613511967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caseous calcification of the mitral annulus on MDCT: a rare intracardiac mass.","authors":"Najoua Mallat,&nbsp;Manel Limeme,&nbsp;Houneida Zaghouani,&nbsp;Feriel Mootemri,&nbsp;Senda Majdoub,&nbsp;Habib Amara,&nbsp;Dejla Bakir,&nbsp;Chakib Kraiem","doi":"10.1177/2047981613502177","DOIUrl":"https://doi.org/10.1177/2047981613502177","url":null,"abstract":"<p><p>Caseous calcification of the mitral annulus is a rare form of chronic degenerative process in the mitral valve fibrous ring with a mass-like appearance that has to be in the differential of the radiologist and cardiologist. We present the case of an 82-year-old woman in whom a tumor-like calcified mass in the posterior side of the mitral valve annulus was detected at echocardiography, and the diagnosis of caseous calcification was confirmed on multidetector computed tomography (MDCT). The diagnostic features of this rare cardiac mass are described. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613502177"},"PeriodicalIF":0.0,"publicationDate":"2013-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613502177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcatheter arterial embolization of anomalous systemic arterial supply to the basal segment of the lung.","authors":"Fumie Sugihara,&nbsp;Satoru Murata,&nbsp;Fumio Uchiyama,&nbsp;Jun Watari,&nbsp;Eliko Tanaka,&nbsp;Natsuka Muraishi,&nbsp;Etsuko Satoh,&nbsp;Shin-Ichiro Kumita","doi":"10.1177/2047981613511363","DOIUrl":"https://doi.org/10.1177/2047981613511363","url":null,"abstract":"<p><p>We describe the case of a 67-year-old woman with an anomalous systemic arterial supply to the basal segment of the lung, which was managed successfully by transcatheter arterial embolization (TAE) with microcoils. Her chest computed tomography (CT) scan showed diffuse ground-glass opacity in the left lower lobe, no bronchial abnormalities, and blood supply from an anomalous artery originating from the descending thoracic aorta, with drainage to the normal pulmonary vein. We successfully performed TAE under balloon occlusion of the anomalous artery, without complications. TAE is a minimally invasive, safe, and valuable method, and could be used as first-line treatment in such cases. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613511363"},"PeriodicalIF":0.0,"publicationDate":"2013-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613511363","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic value of apparent diffusion coefficient for the accurate assessment and differentiation of intracranial meningiomas.","authors":"Shazia Bano,&nbsp;Mustansar Mahmood Waraich,&nbsp;Muhammad Afzal Khan,&nbsp;Saeed Ahmad Buzdar,&nbsp;Shahid Manzur","doi":"10.1177/2047981613512484","DOIUrl":"https://doi.org/10.1177/2047981613512484","url":null,"abstract":"<p><strong>Background: </strong>Diffusion-weighted imaging (DWI) along with the calculation of apparent diffusion coefficient (ADC), is a novel, non-invasive, and reliable technique of choice for accurate assessment and for the treatment planning of different types of brain tumors. It is more advantageous in the distinction and differentiation of benign from malignant meningiomas on the basis of ADC values.</p><p><strong>Purpose: </strong>To investigate the utility of DW magnetic resonance imaging (MRI), and to compare the apparent diffusion coefficient (ADC) obtained at two b-values for an authentic and preoperative characterization of meningiomas.</p><p><strong>Material and methods: </strong>Twenty-six patients with clinically diagnosed or histologically verified meningioma (18 benign and 8 malignant) underwent imaging including DWI at 1.5 T. DW images were obtained at b = 1000 s/mm(2) and b = 2000 s/mm(2), ADC maps were generated at both the b-values. Signal intensities (SIs) and ADCs for solid tumorous tissues, contralateral normal tissues, and peritumoral edema were calculated and normalized ADC (NADC) ratio were determined for tumorous tissues. SI scores, ADC maps, and ADC values were analyzed visually and quantitatively, and were compared at both the b-values.</p><p><strong>Results: </strong>DW images at b = 2000 s/mm(2) were more conspicuity (either hyperintense or hypointense) with improved contrast. The mean ADC of malignant meningiomas (0.64 ± 0.05 and 0.42 ± 0.03) was significantly lower (P < 0.05) as compared with benign meningiomas (1.04 ± 0.12 and 0.80 ± 0.07) at both the b-values. Mean NADC ratio in the malignant type was also significantly lower (P < 0.05) than the benign type at both the b-values. Mean ADC values for peritumoral edema do not differ between benign and malignant meningiomas.</p><p><strong>Conclusion: </strong>1.5-T DWI using high b-values improved our ability to differentiate benign from malignant meningiomas. DWI may play an important role in the preoperative radiological evaluation and the recognition of these types for proper surgical treatment.</p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613512484"},"PeriodicalIF":0.0,"publicationDate":"2013-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613512484","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primary hepatic leiomyosarcoma in a 5-month-old female infant.","authors":"Pei-Shan Tsai,&nbsp;Ting-Chi Yeh,&nbsp;Shin-Lin Shih","doi":"10.1177/2047981613498722","DOIUrl":"https://doi.org/10.1177/2047981613498722","url":null,"abstract":"<p><p>Leiomyosarcoma is a malignant mesenchymal neoplasm deriving from the smooth muscle cells. Primary hepatic leiomyosarcoma is very rare. Its onset is always during middle and old age. Herein, we present a case of primary hepatic leiomyosarcoma in a 5-month-old girl who may be the youngest patient reported in the known published English literature. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613498722"},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613498722","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31965093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wandering spleen with gastric volvulus and intestinal non-rotation in an adult male patient.","authors":"Minako Ooka,&nbsp;Eiichi Kohda,&nbsp;Yuo Iizuka,&nbsp;Masashi Nagamoto,&nbsp;Tomotaka Ishii,&nbsp;Yoshihisa Saida,&nbsp;Norikazu Shimizu,&nbsp;Tatsuya Gomi","doi":"10.1177/2047981613499755","DOIUrl":"https://doi.org/10.1177/2047981613499755","url":null,"abstract":"<p><p>We report an extremely rare case of wandering spleen (WS) complicated with gastric volvulus and intestinal non-rotation in a male adult. A 22-year-old man who had been previously treated for Wilson disease was admitted with severe abdominal pain. Radiological findings showed WS in the midline of the pelvic area. The stomach was mesenteroaxially twisted and intestinal non-rotation was observed. Radiology results did not show any evidence of splenic or gastrointestinal (GI) infarction. Elective emergency laparoscopy confirmed WS and intestinal non-rotation; however, gastric volvulus was not observed. It was suspected that the stomach had untwisted when gastric and laparoscopic tubes were inserted. Surgery is strongly recommended for WS because of the high risk of serious complications; however, some asymptomatic adult patients are still treated conservatively, such as the patient in this study. The present case is reported with reference to the literature. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613499755"},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613499755","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31965095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computed tomographic findings of radiation-induced acute adrenal injury with associated radiation nephropathy: a case report.","authors":"Nicola Schieda,&nbsp;Parvati Ramchandani,&nbsp;Evan S Siegelman","doi":"10.1177/2047981613501305","DOIUrl":"https://doi.org/10.1177/2047981613501305","url":null,"abstract":"<p><p>Radiation nephropathy was first recognized in 1906. The kidney is a radiosensitive organ with a tolerance dose (5% complications in 5 years) of 20 Gray. The imaging findings of acute and chronic radiation induced renal injury are previously described. Radiation-induced adrenal injury, to our knowledge, has not been described in the literature. Unlike the kidneys and other upper abdominal organs, the adrenal glands are traditionally thought to be radio-resistant, protected from radiation-induced injury by proximity to adjacent organs and by the adrenal medulla which reportedly has increased radio-resistance. We present the computed tomographic imaging findings of a patient with acute radiation induced adrenal injury which resulted in adrenal insufficiency following radiotherapy of an adjacent thecal metastasis. </p>","PeriodicalId":30445,"journal":{"name":"Acta Radiologica Short Reports","volume":"2 7","pages":"2047981613501305"},"PeriodicalIF":0.0,"publicationDate":"2013-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/2047981613501305","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31964468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}