Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Imaging of hibernomas: A retrospective study on twelve cases. | CLINICAL SARCOMA RESEARCH Imaging of hibernomas A retrospective study on twelve cases Papathanassiou et al. Papathanassiou et al. Clinical Sarcoma Research 2011 1 3 http content 1 1 3 25 July 2011 BioMed Central Papathanassiou et al. Clinical Sarcoma Research 2011 1 3 http content 1 1 3 CLINICAL SARCOMA RESEARCH RESEARCH Open Access Imaging of hibernomas A retrospective study on twelve cases 7 n . I 1 3 s . . I- 1 1 1 Zafiria G Papathanassiou Marco Alberghini Sophie Taieb Costantino Errani Piero Picci and Daniel Vanel Abstract Background To analyze the imaging features of hibernomas on computed tomography CT and magnetic resonance MRI . Methods Twelve hibernomas were retrospectively assessed with CT and MR imaging and compared to the histology of the specimen Results Nine females and three males with a mean age of 30 years were included. Ten tumors occurred in the thigh and two affected the subcutis of the periscapular and buttock regions. On eight CT scans seven 87 5 lesions were homogeneous and mildly to moderately hyperdense compared to subcutaneous fat while one lesion was heterogeneous with mixed hypo and hyperattenuating areas. On six T1W images five 83 3 lesions appeared homogeneous and hypointense relative to subcutaneous fat and one was heterogeneous. Incomplete fat suppression was depicted in all cases. All lesions displayed marked enhancement. Large intratumoral vessels were depicted in three of the 12 25 cases. Septations were depicted on four of the eight unenhanced CT and on all six MRI examinations. Conclusions Hibernoma usually appears hypodense and hypointense relative to subcutaneous fat on pre-contrast CT and MR T1W with variable enhancement patterns and incomplete fat suppression on STIR or fat-saturated sequences. These characteristics relate directly to the presence of brown fat. However atypical findings such as heterogeneous patterns of mixed fatty and non fatty components
