Mr imaging of primary non-Hodgkin's breast lymphoma

In this report we describe the MR imaging findings, including dynamic data, in a patient with primary non-Hodgkin's lymphoma of the breast. The precontrast T1-weighted sequence showed several hypointense, ill-defined, non-spiculated masses. In the T2-weighted images the masses showed a hyperintense halo. In the dynamic and postcontrast sequences all lesions enhanced markedly, and a further large mass was discovered. In comparison to mammography and sonography, only MR imaging identified the multicentric extent of the tumour. Differentiation from invasive cancer, based on either MR or conventional imaging features, was not possible.

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Masses, Malignancy, and Mimics: CT and MR Imaging of the Sinonasal Cavity

Neurographics ◽

10.3174/ng.2000030 ◽

2021 ◽

Vol 11 (2) ◽

pp. 80-95

Author(s):

E.K. Funk ◽

S.M. Dorros ◽

A.S. Deconde ◽

M.A. McDonald

Keyword(s):

Mr Imaging ◽

Surgical Management ◽

Inflammatory Disease ◽

Learning Objectives ◽

Disease Spread ◽

Imaging Features ◽

Imaging Findings ◽

Sinonasal Malignancies ◽

Clinical Presentations ◽

Disease Staging

Although sinonasal malignancies are relatively rare entities, the frequency of sinus imaging ensures that most radiologists will encounter an unsuspected sinonasal neoplasm at some point in their career. Given that the initial clinical presentations are often nonspecific and may mimic inflammatory rhinosinusitis, it is essential that the practicing radiologist becomes familiar with the specific CT and MR imaging findings that should raise suspicion for an underlying neoplasm. In the course of this review, we highlight the imaging features of a spectrum of sinonasal neoplasms, both benign and malignant, with emphasis on the distinct and complementary roles of CT and MR imaging in the differentiation from common inflammatory disease. We also highlight key anatomic relationships crucial to identifying routes of disease spread with an eye toward disease staging and surgical management.Learning Objectives: To familiarize the practicing radiologist with the key imaging features that should raise suspicion for an underlying sinonasal malignancy and to understand the complementary roles of CT and MR imaging in evaluating routes of locoregional and perineural disease spread.

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Imaging Features of Intracranial Meningiomas with Histopathological Correlation: A Relook into Old Disease

Nepalese Journal of Radiology ◽

10.3126/njr.v3i1.8713 ◽

2013 ◽

Vol 3 (1) ◽

pp. 14-32

Author(s):

K Gangadhar ◽

D Santhosh ◽

GM Fatterpekar

Keyword(s):

Mr Imaging ◽

Signs And Symptoms ◽

Intracranial Meningioma ◽

Imaging Features ◽

Imaging Findings ◽

Histopathological Correlation ◽

Imaging Characteristics ◽

Dural Tail ◽

Atypical Meningiomas ◽

Weighted Sequences

Background and Purpose: Imaging characteristics of meningiomas have been discussed previously in many studies; however complete imaging features involving general features, MRS and DWI of both typical and atypical meningiomas have been discussed in very few studies. CT and MR imaging findings in 46 cases of intracranial meningioma are reviewed to define specific imaging features. Methods: The present study was carried on 46 patients in the Department of Radiodiagnosis and Imaging, Institute of Medical Sciences, Banaras Hindu University during June 2009 to July 2011.The investigation was carried out by GE-VCT 64 Slice Scanner machine and Magnetic resonance imaging was contemplated using 1.5 Tesla SIEMENS-MAGNETOM AVANTO. CT and MR imaging studies were reviewed to characterize mass location, imaging characteristics, atypical features and advanced imaging features. Clinical presenting signs and symptoms were correlated with imaging findings. Results: a). Forty six cases of intra cranial meningiomas were studied prospectively in 24 women and 22men, aged 11 – 80 years. Meningiomas were stratified into typical and atypical and also depending upon intra cranial location. b). 73.91% of the cases in showed supratentorial location, rest were infratentorial (26.08%).CT/MRI revealed well defined margins in 84.78% with homogenous consistency in 73.91% of lesions. Foci of necrosis were noted in 32.60% of cases and 15.22% of cases showed calcification foci in meningioma. Sinus invasion noticed in 15.22% of cases, whereas adjacent bony reaction noticed in 30.43% of cases. c). Majority of Meningioma showed broad dural base (89.10%), adjacent white matter buckling (71.74%) and surrounding CSF cleft (52.17%). Displaced subarachnoid vessels were demonstrated in 30.43%, where as the pathognomonic dural tail was present in only 23.91% of the cases. d). All the cases of Meningioma demonstrated restriction on diffusion weighted sequences suggestive of high cellularity of the lesions. On CT angiography, neovascularity was noticed in 85.71% and tumor blush was noticed in 71.42% incidence. On MR Spectroscopy, all demonstrated choline peak and in one third cases alanine peak was discernible. Conclusion: In view of the observed evidence, it was concluded that understanding the classification, pathology and imaging appearance meningioma are essential for treatment planning. CT and MR imaging play indispensable role in the localization & characterization of these tumors, and MR have virtually yielded its position of dominance in characterizing these tumors. Nepalese Journal of Radiology / Vol.3 / No.1 / Issue 4 / Jan-June, 2013 / 14-32 DOI: http://dx.doi.org/10.3126/njr.v3i1.8713

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MR imaging features of breast lymphoma

European Journal of Radiology ◽

10.1016/s0720-048x(01)00416-8 ◽

2002 ◽

Vol 42 (1) ◽

pp. 62-64 ◽

Cited By ~ 25

Author(s):

Figen Başaran Demirkazık

Keyword(s):

Mr Imaging ◽

Imaging Features ◽

Breast Lymphoma

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CT Texture analysis and CT scores for characterization of fluid collections

BMC Medical Imaging ◽

10.1186/s12880-021-00718-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Hans-Jonas Meyer ◽

Benedikt Schnarkowski ◽

Jakob Leonhardi ◽

Matthias Mehdorn ◽

Sebastian Ebel ◽

...

Keyword(s):

Texture Analysis ◽

Texture Features ◽

Imaging Features ◽

Conventional Imaging ◽

Imaging Findings ◽

Ct Guided ◽

Septic Focus ◽

Fluid Collections ◽

Better Than

Abstract Background Texture analysis derived from Computed tomography (CT) might be able to better characterize fluid collections undergoing CT-guided percutaneous drainage treatment. The present study tested, whether texture analysis can reflect microbiology results in fluid collections suspicious for septic focus. Methods Overall, 320 patients with 402 fluid collections were included into this retrospective study. All fluid collections underwent CT-guided drainage treatment and were microbiologically evaluated. Clinically, serologically parameters and conventional imaging findings as well as textures features were included into the analysis. A new CT score was calculated based upon imaging features alone. Established CT scores were used as a reference standard. Results The present score achieved a sensitivity of 0.78, a specificity of 0.69, area under curve (AUC 0.82). The present score and the score by Gnannt et al. (AUC 0.81) were both statistically better than the score by Radosa et al. (AUC 0.75). Several texture features were statistically significant between infected fluid collections and sterile fluid collections, but these features were not significantly better compared with conventional imaging findings. Conclusions Texture analysis is not superior to conventional imaging findings for characterizing fluid collections. A novel score was calculated based upon imaging parameters alone with similar diagnostic accuracy compared to established scores using imaging and clinical features.

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Spectrum of MR imaging findings of sinonasal mucormycosis in post COVID-19 patients

British Journal of Radiology ◽

10.1259/bjr.20210648 ◽

2021 ◽

Author(s):

Sushen Kumar Kondapavuluri ◽

Varun Kumar reddy Anchala ◽

Shohyle Bandlapalli ◽

Rajani Gorantla ◽

Ankamma Rao Danaboyina ◽

...

Keyword(s):

Early Intervention ◽

Mr Imaging ◽

Imaging Features ◽

Imaging Findings ◽

Radiological Findings ◽

Secondary Infections ◽

Adjacent Structures ◽

Rapid Spread ◽

Extent Of Disease ◽

Diagnostic Pitfalls

During rapid spread of coronavirus disease (COVID-19) globally, ever since WHO declared COVID-19 as pandemic, there have been various patterns of disease in terms of diagnosis, management and complications. Secondary infections are reportedly common in hospitalized and severely ill COVID-19 patients among which fungal being 10 times more common. Mucormycosis is amongst the most lethal form of Zygormycosis occurring in post COVID-19 patients. A varied patterns of disease involvement and spectrum of imaging features are observed in patients with mucormycosis in post COVID-19 patients. MRI has better efficacy than CT in detecting early invasion of mucormycosis. The goal of this review is to familiarize radiologists about the MR imaging spectrum of mucormycosis in post COVID-19 patients with potential diagnostic pitfalls in CT. Advances in knowledge: Radiological findings of mucormycosis in post COVID-19 patients show varied patterns of disease involvement and spectrum of imaging features. One should not solely rely on CT imaging to detect the extent of disease. MRI helps in early and accurate detection of invasion into adjacent structures and so helpful in early intervention.

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Morphometric and volumetric MRI changes in idiopathic intracranial hypertension

Cephalalgia ◽

10.1177/0333102413484095 ◽

2013 ◽

Vol 33 (13) ◽

pp. 1075-1084 ◽

Cited By ~ 55

Author(s):

Jan Hoffmann ◽

Hans-Jürgen Huppertz ◽

Christoph Schmidt ◽

Hagen Kunte ◽

Lutz Harms ◽

...

Keyword(s):

Optic Nerve ◽

Mr Imaging ◽

Pituitary Gland ◽

Intracranial Hypertension ◽

Idiopathic Intracranial Hypertension ◽

Optic Nerve Sheath ◽

Imaging Features ◽

Imaging Findings ◽

Nerve Sheath ◽

Study Results

Objective We aimed at validating established imaging features of idiopathic intracranial hypertension (IIH) by using state-of-the-art MR imaging together with advanced post-processing techniques and correlated imaging findings to clinical scores. Methods Twenty-five IIH patients as well as age-, sex- and body mass index (BMI)-matched controls underwent high-resolution T1w and T2w MR imaging in a 1.5 T scanner, followed by assessment of optic nerve sheaths, pituitary gland, ventricles and Meckel's cave. Imaging findings were correlated with cerebrospinal fluid (CSF) opening pressures and clinical symptom scores of visual disturbances (visual field defects or enlarged blind spot), headache, tinnitus (pulsatile and non-pulsatile) and vertigo. CSF as well as ventricle volumes were determined by using an automated MRI volumetry algorithm. Results So-called ‘empty sella’ and optic nerve sheath distension were identified as reliable imaging signs in IIH. Posterior globe flattening turned out as a highly specific but not very sensitive sign. No abnormalities of the lateral ventricles were observed. These morphometric results could be confirmed using MR volumetry (VBM). Clinical symptoms did not correlate with an increase in lumbar opening pressure. Conclusions Our study results indicate that lateral ventricle size is not affected in IIH. In contrast, abnormalities of the pituitary gland and optic nerve sheath were reliable diagnostic signs for IIH.

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