Cystic lesions in the brain — CT and MRI imaging features along with pathologic correlation

Purpose Invasive aspergillosis usually affects immunocompromised patients. It carries a high risk of morbidity and mortality and usually has a nonspecific clinical presentation. Early diagnosis is essential in order to start effective treatment and improve clinical outcome. Materials and Methods In a retrospective search of the PACS databases from two medical centers, we identified 9 patients with histologically proven cerebral aspergilloma. We systematically analyzed CT and MRI imaging findings to identify typical imaging appearances of cerebral aspergilloma. Results CT did not show a typical appearance of the aspergillomas. In 100 % (9/9) there was a rim-attenuated diffusion restriction on MRI imaging. Multiple hypointense layers in the aspergillus wall, especially on the internal side, were detected in 100 % on T2-weighted imaging (9/9). Aspergillomas were T1-hypointense in 66 % of cases (6/9) and partly T1-hyperintense in 33 % (3/9). In 78 % (7/9) of cases, a rim-attenuated diffusion restriction was detected after contrast agent application. Conclusion Nine cases were identified. Whereas CT features were less typical, we observed the following imaging features on MRI: A strong, rim-attenuated diffusion restriction (9/9); onion layer-like hypointense zones, in particular in the innermost part of the abscess wall on T2-weighted images (9/9). Enhancement of the lesion border was present in the majority of the cases (7/9). Key points Citation Format

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Clinical and imaging features of carcinosarcoma of the uterus and cervix

Insights into Imaging ◽

10.1186/s13244-021-01084-5 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Liming Li ◽

Wenpeng Huang ◽

Kangkang Xue ◽

Leiyu Feng ◽

Yijing Han ◽

...

Keyword(s):

Malignant Tumors ◽

High Signal ◽

Imaging Features ◽

Mri Imaging ◽

Diffusion Weighted Image ◽

Resonance Imaging ◽

Endometrial Thickening ◽

Staging Accuracy ◽

Magnetic Resonance Imaging Mri ◽

Ct And Mri

Abstract Aim The purpose of our study was to analyze the clinical and imaging features of uterine carcinosarcoma (UCS) and cervical carcinosarcoma (CCS), and to explore the diagnostic and staging accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) examinations. Methods 41 patients including 37 with UCS and 4 with CCS from July 2011 to September 2020 were enrolled in the study. Of the 37 UCS cases, 7 had CT images, 27 had MRI images, and 3 had both CT and MRI images. The Clinical data, CT or MRI imaging findings were analyzed. Diagnosis and staging accuracy of CT and MRI images were also analyzed. Results Carcinosarcoma usually occurs in postmenopausal women (40/41), with the typical clinical symptom being vaginal bleeding (33/41). The CA125 degree was significantly different between the two invasion depth groups (p = 0.011). Most uterine carcinosarcomas showed unclear boundaries, uneven density, low or equal signal on T1WI, high or mixed signal on T2WI, uneven high signal on diffusion-weighted image (DWI), and mild enhancement. The diagnostic accuracies of CT and MRI for carcinosarcoma were 0% and 3.33%, respectively. The diagnostic accuracy for malignant tumors on CT and MRI was 50% and 83.33%, respectively. Conclusions Carcinosarcoma lesions presented with huge mass filling in the cavity, and some presented with small polypoid lesions or endometrial thickening. Evaluation of lymph node metastasis is a significant challenge for imaging staging.

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Imaging features of primary renal lymphoma

Acta Radiologica ◽

10.1177/0284185117706202 ◽

2017 ◽

Vol 59 (1) ◽

pp. 114-120 ◽

Cited By ~ 5

Author(s):

Qingqiang Zhu ◽

Wenrong Zhu ◽

Jingtao Wu ◽

Wenxin Chen

Keyword(s):

Multislice Computed Tomography ◽

Low Grade ◽

Imaging Features ◽

Mri Imaging ◽

Abdominal Vessels ◽

Renal Lymphoma ◽

Renal Enlargement ◽

Magnetic Resonance Imaging Mri ◽

Mri Characteristics ◽

Ct And Mri

Background Cases of primary renal lymphoma (PRL) are quite rare and are often mistaken for renal cell carcinoma. Purpose To determine the multislice computed tomography (MSCT) and magnetic resonance imaging (MRI) characteristics of PRL. Materials and Methods Twenty-three patients with PRL were identified by CT and MRI, and their tumor characteristics were assessed. Results Tumors exhibited single or multifocal nodules (n = 19) and diffuse renal enlargement (n = 4). Twenty-two tumors exhibited an infiltrative appearance. There was no evidence of calcification in any of the cases. Twenty-one tumors displaced or wrapped around abdominal vessels rather than encasing them. Enlarged retroperitoneal nodes were observed in three cases. Neither extension into the venous system nor distant metastasis was found. Tumor enhancement was of low attenuation compared with that of normal renal cortex and medulla ( P < 0.05). PRL was isointense on T1-weighted imaging, slightly hypointense on T2-weighted imaging and hyperintense on diffusion-weighted imaging. Twenty-two patients exhibited biopsy-confirmed PRN. There were four, 12, and seven cases of low-grade, intermediate-grade, and high-grade tumors, respectively. Patient were followed up over 16 to 166 months. Six patients died within three years and five patients died within five years. Conclusion Infiltrative appearance and tumor displacement or extension around abdominal vessels rather than vessel encasement are common findings on CT or MRI imaging and may suggest a diagnosis of PRL.

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Pearls and pitfalls of imaging features of pancreatic cystic lesions: a case-based approach with imaging–pathologic correlation

Japanese Journal of Radiology ◽

10.1007/s11604-020-01032-1 ◽

2020 ◽

Cited By ~ 1

Author(s):

Kumi Ozaki ◽

Hiroshi Ikeno ◽

Yasuharu Kaizaki ◽

Kazuya Maeda ◽

Shohei Higuchi ◽

...

Keyword(s):

Imaging Features ◽

Cystic Lesions ◽

Pathologic Correlation ◽

Case Based

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Chordoma: 18F-FDG PET/CT and MRI imaging features

Skeletal Radiology ◽

10.1007/s00256-021-03723-w ◽

2021 ◽

Author(s):

Joshua T. Olson ◽

Doris E. Wenger ◽

Peter S. Rose ◽

Ivy A. Petersen ◽

Stephen M. Broski

Keyword(s):

Fdg Pet ◽

Imaging Features ◽

Mri Imaging ◽

Pet Ct ◽

18F Fdg ◽

Fdg Pet Ct ◽

Ct And Mri

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Multilocular Cystic Lesions in the Uterine Cervix: Broad Spectrum of Imaging Features and Pathologic Correlation

American Journal of Roentgenology ◽

10.2214/ajr.09.3619 ◽

2010 ◽

Vol 195 (2) ◽

pp. 517-523 ◽

Cited By ~ 17

Author(s):

Sung Bin Park ◽

Jong Hwa Lee ◽

Young Ho Lee ◽

Mi Jin Song ◽

Hye Jeong Choi

Keyword(s):

Broad Spectrum ◽

Uterine Cervix ◽

Imaging Features ◽

Cystic Lesions ◽

Pathologic Correlation

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CT and MRI Imaging Features and Grades of Liver Iron Deposition

ITM Web of Conferences ◽

10.1051/itmconf/20192602003 ◽

2019 ◽

Vol 26 ◽

pp. 02003

Author(s):

Qianwen Huang ◽

Simin Lin ◽

Shaoyin Duan

Keyword(s):

False Negative ◽

Laboratory Data ◽

Iron Deposition ◽

Normal Density ◽

Imaging Features ◽

Mri Imaging ◽

Liver Iron ◽

Ct Value ◽

Significant Difference ◽

Ct And Mri

CT and MRI imaging features and grades of liver iron deposition（LID）were discussed and evaluated in clinical application.The imaging and laboratory data of 20 patients with LID were analyzed retrospectively. CT value of liver were measured and MR signal intensity ratio of muscle/liver calculated.A new imaging grade of LID were made with CT and MR, and the grade correlation was analyzed between CT, MR and SF. All of 20 patients with LID, 19 cases were CT examination, their CT value ranging of liver were from 55HU to 116HU, of which more than 72HU were in 7 cases and 72HU or less in 12. 14 cases were MR examination with the low signal of liver, and the inverse phase signal of T1WI was higher than that of the positive phase. There were no significant difference among the grade of CT, T1WI, T2WI and SF (P>0.05), and there were the positive correlation of grade between CT, T1WI, T2WI and SF (rs=0.803,0.847,0.677 respectively), and of values between CT, T1WI SIR, T2WI SIR and SF(rs=0.454, 0.538, 0.811 respectively). CT can show the LID with high-density, but the mild LID can be with normal density, which is the false negative. MRI can show LID with low-signal, of which T2WI is the lower than T1WI, it is beneficial to diagnose the early LID. Grades of CT and MR have good consistent with that of SF, and can reflect the severity of LID, particularly that of MR-T1WI grading.

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