scholarly journals Intracranial Malignant Triton Tumor in Children: A Case Report

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Xianwen Hu ◽  
Xiaolan He ◽  
Pan Wang ◽  
Yujia Zou ◽  
Dandan Li ◽  
...  
Keyword(s):  
Histopathological Examination ◽  
Single Case ◽  
Final Diagnosis ◽  
Resonance Imaging ◽  
Malignant Triton Tumor ◽  
Mesenchymal Tissue ◽  
Contrast Enhanced ◽  
Degree Of Malignancy ◽  
Magnetic Resonance Imaging Mri ◽  
Ct And Mri

: Malignant triton tumor (MTT) is a rare, aggressive type of tumor that commonly originates from mesenchymal tissue and is mainly found in adults. Herein, we report a single case of a 12-year-old boy diagnosed with intracranial MTT. This report presents the clinical features and imaging findings of MTT. The 12-year-old patient consulted the hospital due to intermittent dizziness and headache. Computed tomography (CT) showed low-density space-occupying lesion in the left parietal fossa. Magnetic resonance imaging (MRI) showed a mass shadow with slightly long T1 and long T2 signal intensity in the same area. Contrast enhanced MRI (CE-MRI) showed obvious enhancement of the lesion. He was diagnosed with meningioma and underwent surgery. Postoperative histopathological examination diagnosed the lesion as MTT. Two months after the operation, CT examination showed tumor recurrence. He then underwent local radiotherapy and chemotherapy, and unfortunately, died six months later. Intracranial MTT should be considered as one of the differential diagnoses of intracranial meningiomas. CT and MRI are of great significance in the identification of lesion location, invasion range, and degree of malignancy. Final diagnosis of intracranial MTT requires histopathological examination. MTT has a poor prognosis, and surgical resection of the tumor is the preferred treatment. Intervention after early diagnosis is the key to improve the outcome of patients.

scholarly journals Multifocality and Multicentrality in Breast Cancer: Comparison of the Efficiency of Mammography, Contrast-Enhanced Spectral Mammography, and Magnetic Resonance Imaging in a Group of Patients with Primarily Operable Breast Cancer

2021 ◽  
Vol 28 (5) ◽  
pp. 4016-4030
Author(s):  
Katarzyna Steinhof-Radwańska ◽  
Andrzej Lorek ◽  
Michał Holecki ◽  
Anna Barczyk-Gutkowska ◽  
Anna Grażyńska ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Surgical Intervention ◽  
Histopathological Examination ◽  
Breast Conserving Therapy ◽  
Resonance Imaging ◽  
Contrast Enhanced ◽  
Highly Sensitive ◽  
Magnetic Resonance Imaging Mri

Background: The multifocality and multicentrality of breast cancer (MFMCC) are the significant aspects that determine a specialist’s choice between applying breast-conserving therapy (BCT) or performing a mastectomy. This study aimed to assess the usefulness of mammography (MG), contrast-enhanced spectral mammography (CESM), and magnetic resonance imaging (MRI) in women diagnosed with breast cancer before qualifying for surgical intervention to visualize other (additional) cancer foci. Methods: The study included 60 breast cancer cases out of 630 patients initially who underwent surgery due to breast cancer from January 2015 to April 2019. MG, CESM, and MRI were compared with each other in terms of the presence of MFMCC and assessed for compliance with the postoperative histopathological examination (HP). Results: Histopathological examination confirmed the presence of MFMCC in 33/60 (55%) patients. The sensitivity of MG in detecting MFMCC was 50%, and its specificity was 95.83%. For CESM, the sensitivity was 85.29%, and the specificity was 96.15%. For MRI, all the above-mentioned parameters were higher as follows: sensitivity—91.18%; specificity—92.31%. Conclusions: In patients with MFMCC, both CESM and MRI are highly sensitive in the detection of additional cancer foci. Both CESM and MRI change the extent of surgical intervention in every fourth patient.

Contrast-enhanced imaging in hepatic epithelioid hemangioendothelioma: retrospective study of 10 patients

2019 ◽  
Vol 57 (06) ◽  
pp. 753-766 ◽  
Author(s):  
Christoph Klinger ◽  
Gerhard Stuckmann ◽  
Christoph F. Dietrich ◽  
Annalisa Berzigotti ◽  
Marius S. Horger ◽  
...  
Keyword(s):  
Epithelioid Hemangioendothelioma ◽  
Focal Liver Lesions ◽  
Ultrasound Images ◽  
Pathological Findings ◽  
Resonance Imaging ◽  
Contrast Enhanced ◽  
Venous Phase ◽  
Magnetic Resonance Imaging Mri ◽  
Retrospective Multicenter Study ◽  
Ct And Mri

Abstract Purpose The purpose of this study was to analyze imaging findings in hepatic epithelioid hemangioendothelioma (HEHE) with a particular focus on contrast-enhanced ultrasound (CEUS). Materials and Methods This retrospective multicenter study included 10 patients with histologically proven HEHE from 5 European centers. All existing ultrasound images/videos were independently analyzed by 2 experienced examiners (DEGUM level III, internal medicine) using a standardized evaluation form. Patterns of contrast enhancement were correlated with computed tomography (CT), magnetic resonance imaging (MRI), and pathological findings. Results B-mode ultrasound, CEUS, CT, and MRI were performed in 90 %, 70 %, 100 %, and 90 % of patients, respectively. Multifocal HEHE could be observed in 80 % with affection of both liver lobes in 70 %. Analysis of CEUS revealed 3 characteristic patterns that correlated well with contrast patterns on CT and MRI: (a) peripheral nodular enhancement with centripetal fill-in and wash-out in the portal venous and late venous phase (PVLP), (b) rim-like arterial enhancement with wash-out in the PVLP, and (c) inversed target sign with/without wash-out in the PVLP. Wash-out in the PVLP as a sign suspicious of malignancy was observed in 6/7 patients (85.7 %). Conclusions Knowledge of the different characteristic CEUS patterns is of importance to avoid misdiagnosis due to resemblance of patterns A and B to the much more common focal liver lesions hemangioma and intrahepatic cholangiocarcinoma. Of importance, sonographers should be aware that wash-out in the PVLP might be absent in some patients.

scholarly journals Laparoscopic surgical management of a mature presacral teratoma: a case report

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Liming Wang ◽  
Yasumitsu Hirano ◽  
Toshimasa Ishii ◽  
Hiroka Kondo ◽  
Kiyoka Hara ◽  
...  
Keyword(s):  
Laparoscopic Resection ◽  
Mature Teratoma ◽  
Skin Incision ◽  
Histopathological Diagnosis ◽  
Tailgut Cyst ◽  
Resonance Imaging ◽  
Presumptive Diagnosis ◽  
Case Presentation ◽  
Contrast Enhanced ◽  
Magnetic Resonance Imaging Mri

Abstract Background Mature presacral (retrorectal) teratoma is very rare. We report a case in which a mature retrorectal teratoma in an adult was successfully treated with laparoscopic surgery. Case presentation A 44-year-old woman was diagnosed with a presacral tumor during a physical examination. Endoscopic ultrasonography (EUS) revealed a multilocular cystic lesion; the lesion was on the left side of the posterior rectum and measured approximately 30 mm in diameter on both contrast-enhanced pelvic computed tomography (CT) and magnetic resonance imaging (MRI). The presumptive diagnosis was tailgut cyst. However, the histopathological diagnosis after laparoscopic resection was mature teratoma. It is still difficult to preoperatively diagnose mature retrorectal teratomas. Conclusions Laparoscopic resection of mature retrorectal teratomas is a feasible and promising method that is less invasive and can be adapted without extending the skin incision.

scholarly journals The value of contrast-enhanced FLAIR magnetic resonance imaging in detecting meningeal abnormalities in suspected cases of meningitis compared to conventional contrast-enhanced T1WI sequences

2020 ◽  
Vol 51 (1) ◽  
Author(s):  
Wael Hamza Kamr ◽  
Mohamed Gaber Eissawy ◽  
Amr Saadawy
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Early Diagnosis ◽  
Diagnosis And Treatment ◽  
Effective Management ◽  
Resonance Imaging ◽  
Flair Sequence ◽  
Csf Analysis ◽  
Contrast Enhanced ◽  
Magnetic Resonance Imaging Mri

Abstract Background Early diagnosis of meningitis with magnetic resonance imaging (MRI) would be useful for appropriate and effective management, decrease morbidity and mortality, and provide better diagnosis and treatment. The objective of the current study is to compare the accuracy of contrast-enhanced FLAIR (CE-FLAIR) and contrast-enhanced T1WI (CE-T1WI) in the detection of meningeal abnormalities in suspected cases of meningitis. Results Out of 45 patients, 37 patients were confirmed to have meningitis on CSF analysis. Out of the 37 patients, 34 patients were positive on CE-FLAIR sequence and 27 were positive on CE-T1WI. The sensitivity of CE-FLAIR sequence was 91.9% and specificity 100%, while the sensitivity of CE-T1WI sequence was 73% and specificity 100%. Conclusion CE-FLAIR is more sensitive than CE-T1WI in diagnosis of meningitis. It is recommended to be used in any cases with clinically suspected meningitis.

Bone-related disorders of the jaw: A clinico-radiological diagnostic algorithm

2021 ◽  
pp. 197140092199896
Author(s):  
Ahmed Abdel Khalek Abdel Razek
Keyword(s):  
Diagnostic Algorithm ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Specific Diagnosis ◽  
Clinical Presentations ◽  
Neoplastic Lesions ◽  
Lesion Extension ◽  
Magnetic Resonance Imaging Mri ◽  
The Relationship ◽  
Ct And Mri

Bone-related disorders of the jaw (BRDJ) include a spectrum of non-neoplastic and neoplastic lesions of the maxillofacial region that have been recently classified into fibro-osseous lesions, giant cell lesions and osseous tumours. The histopathological features of BRDJ can be similar and overlie each other. Imaging is important in order to reach a specific diagnosis. However, the appearance of BRDJ on imaging is non-specific in some cases. Computed tomography (CT) and magnetic resonance imaging (MRI) are used for accurate localisation, characterisation of the tumour matrix, delineation of the lesion extension and establishment of the relation of BRDJ to the surrounding structures. Imaging is usually done to detect the relationship with the adjacent surrounding vital structures and to diagnose aggressive forms, malignant transformation and associated syndromes. The correlation of the demographic findings, the location and the clinical presentations with the imaging features are important for the diagnosis of BRDJ. The proposed clinico-radiological diagnostic algorithm with CT and MRI helps a specific diagnosis to be reached in some cases.

scholarly journals Negative MRI findings in a case of degenerative myelopathy in a dog : clinical communication

2009 ◽  
Vol 80 (4) ◽  
Author(s):  
M. Okada ◽  
M. Kitagawa ◽  
K. Kanayama ◽  
H. Yamamura ◽  
T. Sakai
Keyword(s):  
Magnetic Resonance Imaging ◽  
Histopathological Examination ◽  
Clinical Signs ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Clinical Communication ◽  
Bladder Control ◽  
Blood Tests ◽  
Degenerative Myelopathy ◽  
Magnetic Resonance Imaging Mri

An 11-year-old male Rough collie was submitted with paraparesis, but did not respond to medical treatment. Clinical signs worsened and the dog displayed paralysis, inability to stand and loss of voluntary bladder control, whereupon magnetic resonance imaging (MRI) was performed. No significant abnormalities were identified from MRI, blood tests, cerebrospinal fluid tests or radiography. After MRI, the dog developed dyspnoea and died. Autopsy and subsequent histopathological examination led to a diagnosis of degenerative myelopathy.

scholarly journals A Case of Schwannoma of the Submandibular Region

2018 ◽  
Vol 12 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Babatunde O. Bamgbose ◽  
Akiko Sato ◽  
Yoshinobu Yanagi ◽  
Miki Hisatomi ◽  
Yohei Takeshita ◽  
...  
Keyword(s):  
Diagnostic Imaging ◽  
Hypoglossal Nerve ◽  
Salivary Gland Tumor ◽  
Dynamic Mri ◽  
Final Diagnosis ◽  
Mr Images ◽  
Submandibular Region ◽  
Contrast Enhanced ◽  
Mobile Mass ◽  
Ct And Mri

Background:We herein described a rare case of schwannoma of the hypoglossal nerve in the submandibular region with diagnostic imaging and histopathological findings.Case Report:A 31-years-old woman has had a palpable firm, rubbery, freely mobile mass in the submandibular region. Of imaging, MR images showed homogeneous isointensity on T1-weighted imaging (T1-WI), heterogeneous hypointensity on T2-WI, heterogeneous hyperintensity on short T1 inversion recovery (STIR), and heterogeneous enhancement on contrast-enhanced T1-WI. A clear capsule was observed on the margin and showed hypointense on T2-WI. Dynamic MRI showed heterogeneous gradual increased enhancement. The uptake of contrast medium was regionally slow. Diagnostic imaging using CT and MRI was suspected of salivary gland tumor or neurogenic tumor. In consideration of imaging diagnosis, a pleomorphic adenoma or a schwannoma was suspected. Final diagnosis was confirmed on the basis of histopathological finding and intraoperative findings.Conclusion:1. Histopathologic examination is inevitable, because MR findings are not specific.2. Schwannomas were said to have specific MRI properties, including specific signs (split-fat sign, fascicular sign, target sign). However, they are not always observed.3. This case confirmed the differential diagnosis on the basis of the intraoperative finding that the tumor was continuous with the hypoglossal nerve.

Magnetic Resonance Imaging in Gynecological Oncology

2009 ◽  
Vol 19 (2) ◽  
pp. 186-193 ◽  
Author(s):  
Vanessa N. Harry ◽  
Heather Deans ◽  
Emma Ramage ◽  
David E. Parkin ◽  
Fiona J. Gilbert
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Early Assessment ◽  
Contrast Enhanced ◽  
Crucial Information ◽  
Magnetic Resonance Imaging Mri ◽  
Indispensable Tool ◽  
Improving Patient Care

Magnetic resonance imaging (MRI) has become an indispensable tool in the assessment of malignant disease. With increasingly sophisticated systems and technical advancements, MRI has continued to expand its role in providing crucial information regarding cancer diagnosis and management. In gynecological malignancies, this modality has assumed greater responsibility, particularly in the evaluation of cervical and endometrial cancers. In addition to conventional imaging, innovative techniques such as dynamic contrast-enhanced MRI and diffusion-weighted MRI show promise in offering early assessment of tumor response. This paper reviews the current role of MRI in gynecological cancers and highlights the potential of novel techniques in improving patient care.

scholarly journals Vulvar Lipoma: A Case Report

2018 ◽  
Vol 40 (10) ◽  
pp. 647-649
Author(s):  
Ahmed Reda ◽  
Ihab Gomaa
Keyword(s):  
Magnetic Resonance Imaging ◽  
Case Report ◽  
Magnetic Resonance ◽  
Histopathological Examination ◽  
Surgical Excision ◽  
Imaging Modalities ◽  
Resonance Imaging ◽  
Rare Site ◽  
Magnetic Resonance Imaging Mri ◽  
Vulvar Mass

AbstractThe present study is a case report of vulvar lipoma. The vulva is a rare site for the development of lipomas, and the aim of the study is to determine if the current imaging modalities can diagnose lipomas correctly. A 43-year-old patient presented with a painless, slowly progressive, oval, mobile and non-tender right vulvar mass compressing the vagina and totally covering the introitus. Both the ultrasonography and magnetic resonance imaging (MRI) exams suggested the diagnosis of lipoma. Surgical excision was performed, and the histopathological examination of the mass confirmed a lipoma.

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