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Imaging findings of pulmonary granulomatosis with polyangiitis (Wegener’s granulomatosis): lesions invading the pulmonary fissure, pleura or diaphragm mimicking malignancy

Guneyli S. | Ceylan N. | Bayraktaroglu S. | Gucenmez S. | Aksu K. | Kocacelebi K. | Acar T.

Article | 2016 | Wiener Klinische Wochenschrift128 ( 21-22 ) , pp.809 - 815

Background: Granulomatosis with polyangiitis (GPA, formerly Wegener’s granulomatosis), in which pulmonary involvement often predominates, is a multisystem granulomatous, necrotizing vasculitis that affects small and medium-sized vessels. In this study we evaluated various radiological findings of pulmonary GPA and focused on spiculated pulmonary lesions invading the pulmonary fissure, pleura or diaphragm mimicking malignancy. Methods: This retrospective study included 48 patients, aged 28–73 (mean, 47.3) years, who showed either histopathological diagnosis of GPA (n = 39) or elevated levels of the cytoplasmic anti-neutrophilic cytop . . .lasmic antibody serum marker (n = 9) between January 2003 and December 2013. All patients received a chest computed tomography (CT), and the types of pulmonary lesions were defined and evaluated. Results: Among the 48 patients, 33 had abnormal pulmonary findings on CT. The most commonly detected pulmonary lesion types were nodules and masses (n = 126) observed in 24 patients. Cavitation, necrosis, spiculation and invasion of the fissure, pleura or diaphragm were observed in 14, 9, 10 and 6 patients, respectively. Consolidation was found in 14 patients and thickening of bronchial wall in 8 patients. Conclusions: Pulmonary lesion types of GPA have a wide spectrum, potentially mimicking a high number of diseases including malignancy, infection and noninfectious inflammatory diseases. A spiculated lung lesion invading the fissure, pleura or diaphragm is mostly present in malignancy, but it can be also seen in GPA. © 2015, Springer-Verlag Wien Daha fazlası Daha az

Does the degree of septal deviation affect cribriform plate dimensions and middle turbinate length?

Damar M. | Dinç A.E. | Eliçora S.S. | Bişkin S. | U?ur M.B. | Öz I.I. | Şerifo?lu I.

Article | 2016 | Journal of Craniofacial Surgery27 ( 1 ) , pp.51 - 55

Objective: To investigate the effect of septal deviation severity on the dimensions of the lateral lamina of the cribriform plate (LLCP), middle turbinate length (MTL), and the angle of the lateral lamella of the cribriform plate (ALLCP). Methods: Paranasal computed tomography (CT) scans of 148 patients with septum deviation (102 males, 46 females; age range 18-63 years) were retrospectively evaluated. The patients were divided into 3 groups according to the measured angle of nasal septal deviation as mild (158). Height and width of LLCP, MTL, and ALLCP on both sides were measured and these parameters were compared between the group . . .s according to the septal deviation side. Results: The nasal septum was deviated to the right in 73 patients (49.3%) and to the left in 75 patients (50.7%). The LLCP dimensions, MTL, and ALLCP between the groups at the contralateral side were not statistically different (P>0.05). The LLCP height, ALLCP between the groups at the ipsilateral side were not statistically different (P>0.05). There was a significant difference in the LLCP width at the ipsilateral side between the groups (P=0.039). The MTL at the ipsilateral side was significantly different between the groups (P=0.003). Conclusion: The severity of nasal septum deviation in patients with nasal septum deviation affects the ipsilateral LLCP width and the ipsilateral MTL. These findings suggest that the increase in the severity of septum deviation in patients undergoing endoscopic sinus surgery does not increase the risk of possible damages that may occur in LLCP. © Copyright 2015 Mutaz B. Habal, MD Daha fazlası Daha az

Radiologic aspects of abdominal hydatidosis in children: A study of 31 cases in Turkey

Erdem L.O. | Erdem C.Z. | Karlioguz K. | Uner C.

Article | 2004 | Clinical Imaging28 ( 3 ) , pp.196 - 200

Objective: To determine the location and radiological characteristics in children with abdominal hydatid disease (HD). Materials and methods: Thirty-one children (average age: 7.2 years) with abdominal HD were studied. The number, location, diameter and internal architecture of the cysts were assessed with abdominal ultrasonography (US) and computed tomography (CT). Density measurements and enhancement patterns were determined on CT. Results: Twenty-one children had hepatic HD. The remaining 10 children had both hepatic and extrahepatic cysts. There were splenic cysts in five children, peritoneal cysts in two children and combined s . . .plenic and peritoneal cysts in three children. The most common site of the cysts was the liver (64%), followed by the spleen (20%) and the peritoneal cavity (16%). The seven intraabdominal cysts, which were not detected by US, were 20 mm or less in diameter. Conclusion: CT may demonstrate additional small intrahepatic or unsuspected extrahepatic cysts. Although rare, splenic or peritoneal hydatidosis should be included in the differential diagnosis of a cystic splenic or peritoneal lesion. Familiarity with atypical locations of HD may be helpful in making a prompt, accurate diagnosis. We think that in particular patients, especially those who had diagnostic problem and who are under surgical planning, CT should be performed additionally. © 2004 Elsevier Inc. All rights reserved Daha fazlası Daha az

Can Hounsfield unit values of the cortex and papillae determined by computed tomography demonstrate the possibility of kidney stone formation?

Baran, Smet | Voyvoda, Nuray | Tokgoz, Ozlem | Tokgoz, Husnu

Article | 2012 | EUROPEAN JOURNAL OF RADIOLOGY81 ( 7 ) , pp.1446 - 1449

Purpose: This study is aimed at measuring HU values of the renal cortex and papillae in patients with nephrolithiasis and demonstrating renal changes associated with nephrolithiasis. Materials and methods: Measurements were performed with regard to HU values of the cortex and papillae of 82 patients with unilateral nephrolithiasis and 81 patients in the control group at the level of the upper pole, middle region and lower pole of both kidneys. Results: When the HU values obtained from the upper pole, middle region and lower pole of the kidney with calculi and unaffected kidney in patients with nephrolithiasis were compared with thos . . .e for the control group, the difference among the groups were found to be significant (p < 0.001). A comparison of the cortex and papillae densities of the affected and unaffected kidneys in patients with unilateral nephrolithiasis were compared with regard to the upper pole and middle region, no statistically significant difference was observed with regard to both the cortex and papillae densities of the upper pole, middle region. However, in those patients with calculi in the lower pole, the region with calculi has a higher papillae density as compared to the unaffected region. Conclusion: Both kidneys in patients with calculi have a comparatively high renal cortex and papillae densities. In the future, this information may be useful in predicting which patients may develop nephrolithiasis. (C) 2011 Elsevier Ireland Ltd. All rights reserved Daha fazlası Daha az

Cavernous hemangioma with arterioportal and portosystemic shunts: Precise diagnosis with dynamic multidetector computed tomography imaging

Hekimoglu K. | Ustundag Y.

Article | 2010 | Abdominal Imaging35 ( 3 ) , pp.328 - 331

Cavernous hemangiomas with shunt formations have been a recently recognized entity. Arterioportal (AP) shunts with cavernous hemangiomas have been described. However, a combination of AP and porto-systemic (PS) shunts causing portal hypertension has not been previously demonstrated by computed tomography (CT) imaging. In this study, we report an atypical cavernous hemangioma associated with portal hypertension. Cavernous hemangioma with AP and PS shunts formations was precisely demonstrated with dynamic multi-detector CT imaging. © Springer Science+Business Media, LLC 2009.

How does nose blowing effect the computed tomography of paranasal sinuses in chronic sinusitis?

Savranlar A. | Uzun L. | Ugur M.B. | Mahmutyazicioglu K. | Ozer T. | Gundogdu S.

Article | 2005 | European Journal of Radiology53 ( 2 ) , pp.182 - 188

Objective: Our aim was to determine whether inward or outward movement of the secretions in the paranasal sinuses due to nose blowing after nasal decongestion has any effect on the paranasal sinus computed tomography (CT) images in patients with sinusitis and to asses whether nose blowing may result in misdiagnosis or overdiagnosis in radiological evaluation of sinusitis. Materials and methods: Twenty-four patients with chronic sinusitis were evaluated in an academic tertiary care hospital and data were collected prospectively. After coronal sinus computed tomography scans were performed at 100 mA setting which was half the value of . . . the standard radiation dose suggested by the manufacturer, topical decongestion was applied to each nostril followed by nose blowing 10 min later. Sinus CT scans were then repeated at the same setting. We evaluated the mucosal thickness of medial, lateral, superior and inferior maxillary and frontal sinus walls and the maximal thickness in anterior ethmoidal cells. The measurements prior to and following nose blowing were compared with Wilcoxon signed ranks test. The obtained images were also staged using Lund-McKay staging system separately and the scores were compared with Student's t-test. Results: We observed a tendency towards reduction in mucosal thickness after nose blowing. There were statistically significant differences between maxillary sinus inferior wall and frontal sinus inferior wall mucosal thickness values prior to and after nose blowing. The difference however was very small, about 0.5 mm in magnitude and Lund-McKay score did not change in any of the patients after nose blowing. Conclusion: Nose blowing and topical nasal decongestion does not have any effect on the diagnostic accuracy of sinus CT in chronic sinusitis patients. © 2004 Elsevier Ireland Ltd. All rights reserved Daha fazlası Daha az

Evaluation of right atrium-to-right ventricle diameter ratio on computed tomography pulmonary angiography: Prediction of adverse outcome and 30-day mortality

Oz I.I. | Altinsoy B. | Serifoglu I. | Sayin R. | Buyukuysal M.C. | Erboy F. | Akduman E.I.

Article | 2015 | European Journal of Radiology84 ( 12 ) , pp.2526 - 2532

Objective The aim of this study was to examine the association between right atrium (RA) and right ventricle (RV) diameters on computed tomography (CT) pulmonary angiography in response to acute pulmonary embolism (APE), in addition to 30-day mortality and adverse outcomes in patients with APE. Methods This retrospective study was accepted by the institutional ethics committee. From January 2013 to March 2014, 79 hospitalized adult patients with symptomatic APE were included. Inclusion criteria were a CT pulmonary angiography positive for pulmonary embolism, availability of patient records, and a follow-up of at least 30 days. A rev . . .iew of patient records and images was performed. The maximum diameters of the heart chambers were measured on a reconstructed four-chamber heart view, and the vascular obstruction index was calculated on CT pulmonary angiography. Results There were statistically significant relationships in both the RA/RV diameter ratio and the RV/left ventricle (LV) diameter ratio between patients with and without adverse outcomes (p < 0.001 and 0.002, respectively). Furthermore, there was a statistically significant difference in the RA/RV diameter ratio, but not in the RV/LV diameter ratio, between those with and without 30-day mortality (p = 0.002 and 0.148, respectively). Conclusions Measurement of the RA/RV diameter ratio may be an alternative and useful method for predicting 30-day mortality and adverse outcome in patients with APE. © 2015 Elsevier Ireland Ltd. All rights reserved Daha fazlası Daha az

Strategies to limit radiation dose in pediatric computed tomography applications [Pediatrik yaşta bilgisayarlı tomografi uygulamalarında radyasyon dozunu azaltma stratejileri]

Yildiz S. | Çeçe H. | Türksoy O.

Review | 2012 | Duzce Medical Journal14 ( 3 ) , pp.69 - 73

Computed tomography is an increasingly used imaging modality in childhood. Since pediatric population possess increased radiosensitivity and radiation-related cancer risk is related with cumulative dose, the radiation exposure must be carefully established. Use of the same CT settings for adults and children, deficiency of weight adjusted protocols, lack of consensus for the measurement of dose and related risks of radiation, and absence of penalties for higher doses are essential problems. Radiation dose can significantly be decreased with evaluation of -onlytargeted part of the body in appropriate conditions, rearrangement of the . . .scanning parameters for children, and subject based protocol and dose adjustment for each children. The alternations in technical parameters of CT device like tube current, kilovoltage peak, table speed should be well-known and carefully applied for limitation of the radiation dose. © 2012 Düzce Medical Journal Daha fazlası Daha az

Cross-sectional Imaging Features of Primary Retroperitoneal Tumors and Their Subsequent Treatment

Acar T. | Harman M. | Guneyli S. | Gemici K. | Efe D. | Guler I. | Yildiz M.

Article | 2015 | Journal of Clinical Imaging Science5 ( 1 ) , pp.69 - 73

Basically malignant tumors in the retroperitoneal region arise from a heterogeneous group of tissues: mesodermal, neurogenic, germ cell, and lymphoid. Although rare, benign tumors and cystic masses can be also encountered in retroperitoneal space. Developments in computed tomography (CT) and magnetic resonance imaging (MRI) have contributed to both diagnosis and staging of the retroperitoneal tumors. High spatial resolution and superiority in calcification make CT indispensable; on the other hand, MRI has a better soft-tissue contrast resolution which is essential for the assessment of vascular invasion and tissue characterization. . . .The aim of this article is to review the CT and MRI features of retroperitoneal tumors and their subsequent management. Copyright: © 2015 Acar T Daha fazlası Daha az

Classification of the inferior turbinate bones: A computed tomography study

Uzun L. | Ugur M.B. | Savranlar A. | Mahmutyazicioglu K. | Ozdemir H. | Beder L.B.

Article | 2004 | European Journal of Radiology51 ( 3 ) , pp.241 - 245

Background: There are only few reports describing the texture of the inferior turbinate bone in normal and pathologic conditions. In this study, different types of human inferior turbinate bones were classified and radiological features of each type were defined. Methods: The shape, structure and density of the inferior turbinate bones were evaluated using paranasal sinus computed tomography images of 283 patients. The cross-sectional areas of the bony part of the inferior turbinate were measured in bone windows. Results: Human inferior turbinate bones were classified into four groups on the basis of different shape and structure as . . .: Type I, lamellar; Type II, compact; Type III, combined type (compact with spongious component); Type IV, bullous. The distribution was as follows: 352 (62.19%) lamellar, 50 (8.83%) compact, 162 (28.63%) combined, and 2(0.35%) bullous type. Conclusion: Inferior turbinate bone is not in a uniform shape and structure. These diversities should be taken into consideration in radiological and clinical evaluation. © 2004 Elsevier Ireland Ltd. All rights reserved Daha fazlası Daha az

Imaging findings of pulmonary granulomatosis with polyangiitis (Wegener's granulomatosis): lesions invading the pulmonary fissure, pleura or diaphragm mimicking malignancy

Guneyli, Serkan | Ceylan, Naim | Bayraktaroglu, Selen | Gucenmez, Sercan | Aksu, Kenan | Kocacelebi, Kenan | Acar, Turker

Article | 2016 | WIENER KLINISCHE WOCHENSCHRIFT128 ( 21-22 ) , pp.809 - 815

Granulomatosis with polyangiitis (GPA, formerly Wegener's granulomatosis), in which pulmonary involvement often predominates, is a multisystem granulomatous, necrotizing vasculitis that affects small and medium-sized vessels. In this study we evaluated various radiological findings of pulmonary GPA and focused on spiculated pulmonary lesions invading the pulmonary fissure, pleura or diaphragm mimicking malignancy. This retrospective study included 48 patients, aged 28-73 (mean, 47.3) years, who showed either histopathological diagnosis of GPA (n = 39) or elevated levels of the cytoplasmic anti-neutrophilic cytoplasmic antibody serum . . . marker (n = 9) between January 2003 and December 2013. All patients received a chest computed tomography (CT), and the types of pulmonary lesions were defined and evaluated. Among the 48 patients, 33 had abnormal pulmonary findings on CT. The most commonly detected pulmonary lesion types were nodules and masses (n = 126) observed in 24 patients. Cavitation, necrosis, spiculation and invasion of the fissure, pleura or diaphragm were observed in 14, 9, 10 and 6 patients, respectively. Consolidation was found in 14 patients and thickening of bronchial wall in 8 patients. Pulmonary lesion types of GPA have a wide spectrum, potentially mimicking a high number of diseases including malignancy, infection and noninfectious inflammatory diseases. A spiculated lung lesion invading the fissure, pleura or diaphragm is mostly present in malignancy, but it can be also seen in GPA Daha fazlası Daha az

Intrapancreatic lipoma and morgagni hernia: A previously unrecognized association

Erdem L.O. | Erdem C.Z. | Comert M.

Article | 2004 | Digestive Diseases and Sciences49 ( 11.Dec ) , pp.1962 - 1964

[No abstract available]

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