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Contrast-Enhanced CT-Guided Core Biopsy of Retroperitoneal Masses

Open Journal of Radiology 2014年第1期4卷 130-135页

作者： Adel El-Badrawy Ahmed Tawfik sherif abdelfattah Amir Monir Manal Salah-Eldin Emad Eldin Azmy Dina El-Tantawy Amro El-Karef Clinical Hematology Department Mansoura Faculty of Medicine Mansoura Egypt Medical Oncology Department Mansoura Faculty of Medicine Mansoura Egypt Pathology Department Mansoura Faculty of Medicine Mansoura Egypt Radiology Department Mansoura Faculty of Medicine Mansoura Egypt

Objective: To evaluate the efficacy, feasibility and safety of contrast-enhanced CT-guided core biopsy of retroperitoneal masses. Materials and Methods: Contrast-enhanced CT-guided biopsy of retroperitoneal masses was performed in 26 patients. Histopathological diagnosis was obtained and accuracy was calculated. Two blinded radiologists determined feasibility of biopsy procedures on routine CT-guidance, and compared accessibility of target lesions using contrast-enhanced and non-contrast-enhanced CT. Results: Satisfactory samples were obtained in all 26 patients and pathological diagnosis was made in 24. Accuracy was 95.5%. Routine CT-guided biopsy punctures were not satisfaction in 4/26 patients, and contrast-enhanced CT scans rendered the target lesions more accessible in 16 patients. Conclusion: Contrast-enhanced CT-guided biopsy increases the feasibility of biopsy of retroperitoneal masses.

关键词： Contrast-Enhanced CT-Guided Biopsy Retroperitoneal Masses

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Diffusion-Weighted MR Imaging of the Benign Hepatic Focal Lesions

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Open Journal of Radiology 2014年第1期4卷 136-143页

作者： Adel El-Badrawy Germeen Albair Ashmallah Ahmed Mohamed Tawfik sherif abdelfattah Manal Salah-Eldin Emad Eldin Azmy Amro Awad El-Karef Ghada A. Salem Omar Farouk Clinical Hematology Department Faculty of Medicine Mansoura University Mansoura Egypt Department of Surgical Oncology Faculty of Medicine Mansoura University Mansoura Egypt Medical Oncology Department Faculty of Medicine Mansoura University Mansoura Egypt Pathology Department Faculty of Medicine Mansoura University Mansoura Egypt Radiology Department Faculty of Medicine Mansoura University Mansoura Egypt Tropical Medicine Department Faculty of Medicine Zagazig University Egypt

Purpose: To determine the role of diffusion weighted MR imaging and apparent diffusion coefficient (ADC) in benign hepatic focal lesions. Method and Materials: This study included 47 patients (29 M, 18 F with mean age of 43 years) with benign hepatic focal lesions. They were cyst (n = 8), hemangioma (n = 23), abscess (n = 5), adenoma (n = 5), focal nodular hyperplasia (n = 4) and nodular regenerative hyperplasia (n = 2). They underwent routine MR imaging and diffusion MR weighted imaging using 1.5 tesla MR unit (Symphony-Siemens). Diffusion MR imaging was done using spin echo type of single shot echo planar imaging (EPI) with b value of 0, 500 & 1000 sec/mm2. The apparent diffusion coefficient (ADC) map was reconstructed and ADC value was measured. The mean ADC values correlated with histo-pathological results as well as follow-up imaging results. Results: Adequate ADC maps were obtained in 47 patients. The mean ADC values were 3.4 ± 0.12 × 10-3 mm2/sec in cystic lesion, 2.23 ± 0.08 × 10-3 mm2/sec in hemangioma, 1.94 ± 0.05 × 10-3 mm2/sec in abscess, 1.72 ± 0.07 × 10-3 in focal nodular hyperplasia, 1.65 ± 0.06 × 10-3 mm2/sec in adenoma, 1.62 ± 0.07 × 10-3 mm2/sec in nodular regenerative hyperplasia. The mean ADC values were significantly different within benign hepatic focal lesions (P < 0.001). The differences between the mean ADC values of FNH, adenoma and NRH were not statistically significant (P < 0.23). Conclusion: Diffusion weighted MR imaging is a new imaging modality for diagnosis and characterization of different benign hepatic focal lesions, particularly in patient with renal dysfunction.

关键词： Diffusion MR Imaging Apparent Diffusion Coefficient Benign Hepatic Focal Lesion

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