Application of Breast Ultrasound Elastography to Differentiate Intracapsular Collection from Silicone-Induced Granuloma of Breast Implant Capsule Complementarily to Contrast-Enhanced Breast Magnetic Resonance Imaging

Background: To determine whether there is correlation between magnetic resonance imaging (MRI) findings and breast elastography to differentiate seroma/hematoma from silicone-induced granuloma of breast implant capsule (SIGBIC). Methods: Prospective study of 99 patients with breast implants submitted to breast MRI during the period from February 1 to May 1, 2017. Patients who present MRI findings of seroma/hematoma or SIGBIC were submitted to a complementary ultrasound elastography study to evaluate the correlation of the results. The criteria adopted for the diagnosis of granuloma by MRI were heterogeneous hypersignal in the T2-weighted sequences, late contrast enhancement, and black drop sign. Lesions that did not enhance after the use of contrast were considered as seroma/hematoma. By elastography, the results were considered positive for granuloma when presented as hard lesions, whereas seroma/hematoma presented as soft lesions. Results: Of the 99 patients evaluated, 15 were included in the study. Of the 15 patients, 9 had solid intracapsular MRI masses, whereas 6 presented collections without contrast enhancement. The complementary elastography study showed correlation with MRI results in all cases of SIGBIC and seroma/hematoma, being elastography able to differentiate lesions from solid to cystic. Conclusions: Elastography of intracapsular masses in breast implants presented results compatible with those found by MRI to differentiate solid lesions from collections.

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Postoperative computed tomography and low-field magnetic resonance imaging findings in dogs with degenerative lumbosacral stenosis treated by dorsal laminectomy

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.3415/vcot-16-06-0096 ◽

2017 ◽

Vol 30 (02) ◽

pp. 143-152 ◽

Cited By ~ 4

Author(s):

Charles Ley ◽

Kerstin Hansson ◽

Lennart Sjöström ◽

Martin Rapp

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Contrast Enhancement ◽

Resonance Imaging ◽

Mri Findings ◽

Spinal Nerves ◽

Low Field ◽

Dorsal Laminectomy ◽

Imaging Signs

SummaryObjectives: To describe postoperative computed tomography (CT) and magnetic resonance imaging (MRI) findings in dogs with degenerative lumbosacral stenosis (DLSS) treated by dorsal laminectomy and partial discectomy.Methods: Prospective clinical case study of dogs diagnosed with and treated for DLSS. Surgical and clinical findings were described. Computed tomography and low field MRI findings pre- and postoperatively were described and graded. Clinical, CT and MRI examinations were performed four to 18 months after surgery.Results: Eleven of 13 dogs were clinically improved and two dogs had unchanged clinical status postoperatively despite imaging signs of neural compression. Vacuum phenomenon, spondylosis, sclerosis of the seventh lumbar (L7) and first sacral (S1) vertebrae endplates and lumbosacral intervertebral joint osteoarthritis became more frequent in postoperative CT images. Postoperative MRI showed mild disc extrusions in five cases, and in all cases contrast enhancing non-discal tissue was present. All cases showed contrast enhancement of the L7 spinal nerves both pre- and postoperatively and seven had contrast enhancement of the lumbosacral intervertebral joints and paraspinal tissue postoperatively. Articular process fractures or fissures were noted in four dogs.Clinical significance: The study indicates that imaging signs of neural compression are common after DLSS surgery, even in dogs that have clinical improvement. Contrast enhancement of spinal nerves and soft tissues around the region of disc herniation is common both pre- and postoperatively and thus are unreliable criteria for identifying complications of the DLSS surgery.Supplementary Material to this article is available online at https://doi.org/10.3415/VCOT-16-06-0096

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Breast Magnetic Resonance Imaging of Multicentric, Multifocal and Bilateral Cancer — A Case-based Review

European Oncology & Haematology ◽

10.17925/eoh.2011.07.01.24 ◽

2011 ◽

Vol 07 (01) ◽

pp. 24

Author(s):

Virginia Pérez Dueñas ◽

María Ruíz de Gopegui Andreu ◽

Sara Morón Hodge ◽

Asunción Suárez Manrique ◽

◽

...

Keyword(s):

Breast Cancer ◽

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

False Positive ◽

Breast Magnetic Resonance Imaging ◽

Breast Mri ◽

Resonance Imaging ◽

Mri Findings ◽

Mri Features ◽

Breast Magnetic Resonance

Multifocal or multicentric breast cancer can be difficult to detect on mammography or ultrasound, particularly in patients with dense breast tissue. A multimodality approach that includes breast magnetic resonance imaging (MRI) is indicated, particularly when conservative surgery is being considered as it is the most sensitive technique for identifying additional sites of disease. However, its influence on recurrence and survival rates has yet not been clearly established, and false-positive cases may lead to more aggressive management and treatment. Radiologists should therefore be aware of relevant breast MRI findings. Infiltrating carcinomas, contralateral unsuspected carcinomas, occult carcinomas, false-positive cases and post-chemotherapy changes. Several cases of multiple-site breast carcinomas and their corresponding mammographic, ultrasound and MRI features have been reviewed for this article, in which the definition and differences between multifocal, multicentric and contralateral breast carcinoma are explained and the most relevant imaging findings on MRI are illustrated and correlated with mammogram and ultrasound findings. Finally, the role of breast MRI in the pre-operative assessment of breast cancer is discussed.

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1.5 Tesla Magnetic Resonance Imaging Features of Canine Intracranial Intra-axial Hematomas

Frontiers in Veterinary Science ◽

10.3389/fvets.2021.778320 ◽

2021 ◽

Vol 8 ◽

Author(s):

James Whitlock ◽

Andrew Holdsworth ◽

Carles Morales ◽

Laurent Garosi ◽

Inés Carrera

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Contrast Enhancement ◽

Clinical Signs ◽

Border Region ◽

Imaging Features ◽

Resonance Imaging ◽

Mri Findings ◽

Mri Features ◽

Mri Study

The differentiation of solitary intra-axial hematomas from hemorrhagic neoplasms based on their magnetic resonance imaging (MRI) features is challenging. The treatment and prognosis for these two disease entities are vastly different and distinction between them is often based on MRI findings alone. The aim of this study was to describe the 1.5 tesla MRI features of canine intra-axial hematomas and correlate these findings with the evolution of hemorrhages described in human brains. Retrospective evaluation of patient details, clinical signs, and MRI findings of dogs with intra-axial hematomas that were histopathologically confirmed or determined via repeat MRI study and/or resolution of neurological signs. Ten dogs met the inclusion criteria. All 10 hematoma lesions were determined to be 2–7 days in age. On MRI, all 10 hemorrhagic lesions were comprised of two distinct regions; a relatively thin T1-weighted (T1W), T2-weighted (T2W) and gradient echo (GRE) hypointense (9/10) peripheral border region and a large central region that was heterogenous but predominantly T1W, T2W and GRE hyperintense (8/10). The peripheral border region was complete in its integrity in all 10 cases on T2W and GRE sequences. Contrast enhancement was present in (6/10) hematoma lesions and was always peripheral in nature with no evidence of central enhancement associated with any of the lesions. An intra-axial hematoma should be suspected in solitary hemorrhagic space occupying lesions that have a complete hypointense peripheral rim, elicit a peripheral contrast enhancement pattern, and display the expected temporal pattern of hematoma evolution.

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Histopathologic Correlates of Nonmass Enhancement Detected by Breast Magnetic Resonance Imaging

Archives of Pathology & Laboratory Medicine ◽

10.5858/arpa.2020-0266-oa ◽

2021 ◽

Author(s):

Vanda F. Torous ◽

Nancy A. Resteghini ◽

Jordana Phillips ◽

Vandana Dialani ◽

Priscilla J. Slanetz ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Ductal Carcinoma ◽

Imaging Modality ◽

Breast Mri ◽

Imaging Features ◽

Resonance Imaging ◽

Mri Findings ◽

Malignant Lesions ◽

Magnetic Resonance Imaging Mri

Context.— Dynamic, contrast-enhanced magnetic resonance imaging (MRI) is a highly sensitive imaging modality used for screening and diagnostic purposes. Nonmass enhancement (NME) is commonly seen on MRI of the breast. However, the pathologic correlates of NME have not been extensively explored. Consequently, concordance between MRI and pathologic findings in such cases may be uncertain and this uncertainty may cause the need for additional procedures. Objective.— To examine the histologic alterations that correspond to NME on MRI. Design.— We performed a retrospective search for women who underwent breast MRI between March 2014 and December 2016 and identified 130 NME lesions resulting in biopsy. The MRI findings and pathology slides for all cases were reviewed. The follow-up findings on any subsequent excisions were also noted. Results.— Among the 130 cases, the core needle biopsy showed 1 or more benign lesions without atypia in 80 cases (62%), atypical lesions in 21 (16%), ductal carcinoma in situ in 22 (17%), and invasive carcinoma in 7 (5%). Review of the imaging features demonstrated some statistically significant differences in lesions that corresponded to malignant lesions as compared with benign alterations, including homogeneous or clumped internal enhancement, type 3 kinetics, and T2 dark signal; however, there was considerable overlap of features between benign and malignant lesions overall. Of 130 cases, 54 (41.5%) underwent subsequent excision with only 6 cases showing a worse lesion on excision. Conclusions.— This study illustrates that NME can be associated with benign, atypical, and/or malignant pathology and biopsy remains indicated given the overlap of radiologic features.

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Pleomorphic xanthoastrocytoma: magnetic resonance imaging findings in a series of cases with histopathological confirmation

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2012005000016 ◽

2012 ◽

Vol 71 (1) ◽

pp. 35-39 ◽

Cited By ~ 14

Author(s):

Vinícius Trindade Gonçalves ◽

Fabiano Reis ◽

Luciano de Souza Queiroz ◽

Marcondes França Jr

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Contrast Enhancement ◽

Pleomorphic Xanthoastrocytoma ◽

Solid Component ◽

Resonance Imaging ◽

Mri Findings ◽

Leptomeningeal Involvement ◽

Magnetic Resonance Imaging Mri ◽

Mri Characteristics

Pleomorphic xanthoastrocytoma (PXA) is a rare glioma. This paper aimed to analyze magnetic resonance imaging (MRI) characteristics in a series of patients diagnosed with PXA. We analyzed MRI findings in 9 patients with histopathologic diagnosis of PXA in our department over the last 12 years. The mean age of patients was 27.3 years. Cortical location was observed in all cases. The lesion imaging was solid-cystic in six cases. In eight cases, the solid component presented hypo or isointense on T1 and iso or hyperintense on T2. Contrast enhancement in the solid component was observed in eight cases. The observed imaging pattern of PXA was superficial location with leptomeningeal involvement, solid-cystic pattern and contrast enhancement in the solid component. We should consider that the association between PXA and other cortical tumors may occur, particularly, with gangliogliomas, which tend to be the main differential diagnosis in MRI.

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Idiopathic Granulomatous Mastitis and its Mimics on Magnetic Resonance Imaging: A Pictorial Review of Cases from India

Journal of Clinical Imaging Science ◽

10.25259/jcis_112_2019 ◽

2020 ◽

Vol 10 ◽

pp. 53

Author(s):

Alison Matich ◽

Seema Sud ◽

T. B. S. Buxi ◽

Vikram Dogra

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Ductal Carcinoma ◽

Breast Mri ◽

New Delhi ◽

Granulomatous Mastitis ◽

Resonance Imaging ◽

Mri Findings ◽

Idiopathic Granulomatous Mastitis ◽

Pictorial Review

Objectives: Idiopathic granulomatous mastitis (IGM) is a rare inflammatory disease of the breast, which is benign but potentially morbid. Mammographic and sonographic findings have been well characterized, but magnetic resonance imaging (MRI) findings have been less thoroughly documented. The objective of this study was to demonstrate characteristic findings for IGM and its mimics via a retrospective review. Material and Methods: Breast MRI examinations performed at Sir Ganga Ram Hospital in New Delhi, India between 2014 and 2019 were retrospectively reviewed to identify cases in which a pattern suggestive of granulomatous mastitis was seen. Cases of known malignancy were excluded. Any available breast pathology results were then obtained, and cases with presumptive or definitive diagnoses were compiled for analysis. Results: Overall, cases identified with characteristic imaging findings and confirmed diagnosis included seven cases of IGM, four cases of invasive ductal carcinoma, two cases of tuberculous mastitis, one case of non- tuberculous infectious mastitis, one case of foreign body mastitis, and one case of eosinophilc mastitis. One case of IGM with masses rather than of non-mass enhancement was also identified. Conclusion: In our review, cases with clustered ring enhancement were found to have inflammatory, idiopathic, infectious and malignant etiologies. While, these etiologies can only be reliably differentiated on pathology, familiarity with the pattern and an awareness of the differential may lead to decreased morbidity due to delays in diagnosis.

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A Feasibility Study of Magnetic Resonance Imaging of Silicone Breast Implants in Finland

Journal of Long-Term Effects of Medical Implants ◽

10.1615/jlongtermeffmedimplants.v15.i1.20 ◽

2005 ◽

Vol 15 (1) ◽

pp. 9-14 ◽

Cited By ~ 3

Author(s):

Ilona Kulmala ◽

John D. Boice ◽

Joseph K. McLaughlin ◽

Lisbet R. Holmich ◽

Matti Pakkanen ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Feasibility Study ◽

Breast Implants ◽

Resonance Imaging ◽

Silicone Breast Implants

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Computed Tomography and Magnetic Resonance Imaging-aided Diagnosis of Primary Essential Cutis Verticis Gyrata: A Case Report with 5-year Follow-up and Review of the Literature

Current Medical Imaging Formerly Current Medical Imaging Reviews ◽

10.2174/1573405614666181005113448 ◽

2019 ◽

Vol 15 (9) ◽

pp. 906-910

Author(s):

Hongzhang Zhu ◽

Shi-Ting Feng ◽

Xingqi Zhang ◽

Zunfu Ke ◽

Ruixi Zeng ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Three Dimensional ◽

Stable Condition ◽

Resonance Imaging ◽

Mri Findings ◽

Cutis Verticis Gyrata ◽

Essential Form ◽

History Of ◽

Magnetic Resonance Imaging Mri

Background: Cutis Verticis Gyrata (CVG) is a rare skin disease caused by overgrowth of the scalp, presenting as cerebriform folds and wrinkles. CVG can be classified into two forms: primary (essential and non-essential) and secondary. The primary non-essential form is often associated with neurological and ophthalmological abnormalities, while the primary essential form occurs without associated comorbidities. Discussion: We report on a rare case of primary essential CVG with a 4-year history of normal-colored scalp skin mass in the parietal-occipital region without symptom in a 34-year-old male patient, retrospectively summarizing his pathological and Computer Tomography (CT) and magnetic resonance imaging (MRI) findings. The major clinical observations on the CT and MR sectional images include a thickened dermis and excessive growth of the scalp, forming the characteristic scalp folds. With the help of CT and MRI Three-dimensional (3D) reconstruction techniques, the characteristic skin changes could be displayed intuitively, providing more evidence for a diagnosis of CVG. At the 5-year followup, there were no obvious changes in the lesion. Conclusion: Based on our observations, we propose that not all patients with primary essential CVG need surgical intervention, and continuous clinical observation should be an appropriate therapy for those in stable condition.

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