scholarly journals Chronic Expansive Retroperitoneal Hematoma

2021 ◽  
pp. 1-2
Author(s):  
Lorena Cambeiro Cabré ◽  
Lorena Cambeiro Cabré ◽  
Eulàlia Ballester Vázquez ◽  
Mireia Solans Solerdelcoll ◽  
Jose Ignacio Pérez García ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Fibrous Tissue ◽  
Soft Tissue Tumors ◽  
Complete Resection ◽  
Retroperitoneal Hematoma ◽  
Histopathological Analysis ◽  
Resonance Imaging ◽  
Dense Fibrous Tissue ◽  
Inflammatory Pseudotumors ◽  
Tissue Capsule

Chronic expansive retroperitoneal hematoma is a hematoma that grows progressively sometime after the original trauma. It can appear in different locations. The mechanism of onset is unclear, but experimental evidence favours an inflammatory cause. For diagnostic imaging, magnetic resonance imaging is more useful than computed tomography (CT). However, it is difficult to differentiate it from other soft tissue tumors, sarcomas, actinomycosis or inflammatory pseudotumors, due to the uneven central uptake. Histopathological analysis of the lesion usually shows a dense fibrous tissue capsule containing numerous old clots without finding clear atypia or signs suggestive of malignancy. The treatment of choice is complete resection of the lesion (including the capsule), as incomplete treatments (such as drainage or curettage of the hematoma contents) may cause recurrence.

Imaging of soft tissue tumors

2020 ◽  
Vol 16 ◽  
Author(s):  
Shinji Tsukamoto ◽  
Andreas F. Mavrogenis ◽  
Yasuhito Tanaka ◽  
Costantino Errani
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Tumor Size ◽  
Critical Role ◽  
Evaluation Criteria ◽  
Soft Tissue Tumors ◽  
Resonance Imaging ◽  
Benign Soft Tissue Tumors ◽  
Response To Chemotherapy

: Differentiation of malignant from benign soft tissue tumors is challenging with imaging alone, including that by magnetic resonance imaging and computed tomography. However, the accuracy of this differentiation has increased owing to the development of novel imaging technology. Detailed patient history and physical examination remain essential for differentiation between benign and malignant soft tissue tumors. Moreover, measurement only of tumor size based on Response Evaluation Criteria In Solid Tumors criteria is insufficient for the evaluation of response to chemotherapy or radiotherapy. Change in metabolic activity measured by 18F-fluorodeoxyglucose positron emission tomography or dynamic contrast enhanced-derived quantitative endpoints can more accurately evaluate treatment response compared to change in tumor size. Magnetic resonance imaging can accurately evaluate essential factors in surgical planning such as vascular or bone invasion and “tail sign”. Thus, imaging plays a critical role in the diagnosis and treatment of soft tissue tumors.

scholarly journals Magnetic resonance imaging of bone and soft tissue tumors. MRI of the cartilaginous tumors.

1990 ◽  
Vol 39 (2) ◽  
pp. 638-642
Author(s):  
Kazuhiro Tanaka ◽  
Yukihide Iwamoto ◽  
Masahiro Ushijima ◽  
Yoichi Sugioka
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Soft Tissue Tumors ◽  
Resonance Imaging ◽  
Cartilaginous Tumors

scholarly journals Semiotics of apical hypertrophic cardiomyopathy in magnetic resonance Imaging

2020 ◽  
Vol 19 (2) ◽  
pp. 18-23
Author(s):  
I. E. Obramenko
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hypertrophic Cardiomyopathy ◽  
Magnetic Resonance ◽  
Left Ventricle ◽  
Heart Diseases ◽  
Fibrous Tissue ◽  
Left Ventricular ◽  
Left Ventricular Cavity ◽  
Resonance Imaging ◽  
Apical Hypertrophic Cardiomyopathy

Introduction. About 0.2 % of the adult population all over the world suffers from hypertrophic cardiomyopathy. Early and timely diagnosis of the apical form of hypertrophic cardiomyopathy remains an urgent medical problem, since the disease has a wide variability of clinical manifestations and often occurs asymptomatic or with symptoms of other heart diseases. Magnetic resonance imaging is an informative method of radiation diagnosis of hypertrophic cardiomyopathy. The aim is improving of radiology diagnostics in applying to the apical form of hypertrophic cardiomyopathy. Materials and methods. 98 patients with apical hypertrophic cardiomyopathy aged 19 to 76 years were еxamined. There were 48 men and 50 women. All subjects were examined by a cardiologist, all patients underwent electrocardiography and echocardiography, 45 patients underwent magnetic resonance imaging (MRI) of the heart. Results. In our study 13 patients had MRI determined the isolated form of apical form of hypertrophic cardiomyopathy, 32 had combined one. 42.2% of the patients with symmetrical hypertrophy of all apical segments had sawtoothed configuration of the LV revealed by MRI. The symptom of left ventricular cavity obliteration was determined in 19 patients. The symptom of LV cavity sequestration was determined in 5 subjects. 5 patients had an aneurysm on the top of the left ventricle, 1 – on the top of the right ventricle. Signs of left ventricular outflow tract obstruction were visualized in 2 patients, intraventricular obstruction at the level of the middle segments of the left ventricle was determined in 5 cases. Akinesis and hypokinesis were detected in areas of fibrous changes (n=21) or in areas of cardiosclerosis (n=2). In 17.8 % of subjects identified non-compacted myocardium, in 3 cases it was combined with apical form of hypertrophic cardiomyopathy. With contrast enhancement in 29 patients, foci (n=22) or zones (n=7) of pathological accumulation of contrast agent were determined, which indicated the replacement of myocardium with fibrous tissue.

scholarly journals Calcifying fibrous tumor of the rectum - a case report

2020 ◽  
Vol 48 (2-3) ◽  
pp. 119-123
Author(s):  
Tomislav Pavlović ◽  
◽  
Rosana Troskot-Perić ◽  
Sanja Trtica ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Intestinal Tract ◽  
Benign Tumor ◽  
Rectal Wall ◽  
Fibrous Tissue ◽  
Unknown Etiology ◽  
Dystrophic Calcification ◽  
Resonance Imaging ◽  
Calcifying Fibrous Tumor ◽  
Fibrous Tumor

A calcifying fibrous tumor (CFT) is a benign tumor of unknown etiology. A calcifying fibrous tumor is rare in the intestinal tract. A calcifying fibrous tumor is characterized by hyalinized collagenous fibrous tissue, psammomatous or dystrophic calcification, and focal lymphoplasmacytic infiltrates on histology. Magnetic resonance imaging is the standard method for evaluating the lesions of the rectum, and CFTs should be considered in differentiating the rectal wall tumors. Herein, we report a case of a 68-year-old man with a rectal wall CFT.

Basics of Imaging Techniques in Evaluation of Soft Tissue Tumors

2017 ◽  
Author(s):  
Emily Alanna Aherne ◽  
Sinchun Hwang
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Imaging Techniques ◽  
Soft Tissue Tumors ◽  
Emission Tomography ◽  
Resonance Imaging ◽  
Positron Emission

Medical imaging plays a pivotal role in the detection, diagnosis, and clinical management of primary soft tissue tumors. Various imaging modalities have been used, and each modality offers unique advantages in the workup of soft tissue tumors by localizing the lesions in different compartments of the body and characterizing macroscopic tissue composition of the lesions in a noninvasive and safe manner. We review the clinical role and technical aspects of the frequently used imaging modalities, including magnetic resonance imaging (MRI), computed tomography, ultrasonography, positron emission tomography, and plain radiography with an emphasis on MRI as a mainstay imaging modality and a brief discussion of advanced techniques. We also review imaging features of common soft tissue tumors that can be detected and characterized using current imaging techniques. This review contains 54 figures, 1 table and 37 references.   Key words: computed tomography, diffusion-weighted imaging, imaging, magnetic resonance imaging, positron emission tomography, soft tissue, technique, tumor, ultrasonography

scholarly journals Pathobiological and Radiological Approach For Hepatocellular Carcinoma Subclassification

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Francesco Vasuri ◽  
Matteo Renzulli ◽  
Silvia Fittipaldi ◽  
Stefano Brocchi ◽  
Alfredo Clemente ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hepatocellular Carcinoma ◽  
Magnetic Resonance ◽  
Histopathological Analysis ◽  
Resonance Imaging ◽  
Imaging Diagnosis ◽  
Mri Features ◽  
Histopathological Evaluation ◽  
Magnetic Resonance Imaging Mri ◽  
Made In

Abstract Many advances have been made in the imaging diagnosis and in the histopathological evaluation of HCC. However, the classic imaging and histopathological features of HCC are still inadequate to define patient’s prognosis. We aimed to find the link between new proposed morphovascular patterns of hepatocellular carcinoma (HCC) and magnetic resonance imaging (MRI) features to identify pre-operatory markers of biologically aggressive HCC. Thirty-nine liver nodules in 22 patients were consecutively identified. Histopathological analysis and immunohistochemistry for CD34 and Nestin were performed to identify the four different HCC morphovascular patterns. MRI was performed using gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid. Three out of four morphovascular HCC patterns showed peculiar MRI features: in particular Pattern D (solid aggressive HCCs with CD34+/Nestin+ new-formed arteries) were isointense on T1-WI in 83% of cases and hyperintense on T2-WI in 50%. Five histologically-diagnosed HCC were diagnosed as non-malignant nodules on MRI due to their early vascularization and low aggressiveness (Pattern A). The comparison between histology and MRI confirms that a subclassification of HCC is possible in a pre-operatory setting. MRI seems to reinforce once more the identity of the different morphovascular HCC patterns and the possibility to pre-operatively identify HCCs with features of biological aggressiveness.

scholarly journals Magnetic Resonance Imaging Appearance of Schwannomas from Head to Toe: A Pictorial Review

2017 ◽  
Vol 7 ◽  
pp. 38 ◽  
Author(s):  
Jamie Crist ◽  
Jacob R Hodge ◽  
Matthew Frick ◽  
Fiona P Leung ◽  
Eugene Hsu ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Neurofibromatosis Type ◽  
Soft Tissue Tumors ◽  
The Body ◽  
Resonance Imaging ◽  
Pictorial Review ◽  
Benign Soft Tissue Tumors ◽  
Mri Characteristics

Schwannomas are benign soft-tissue tumors that arise from peripheral nerve sheaths throughout the body and are commonly encountered in patients with neurofibromatosis Type 2. The vast majority of schwannomas are benign, with rare cases of malignant transformation reported. In this pictorial review, we discuss the magnetic resonance imaging (MRI) appearance of schwannomas by demonstrating a collection of tumors from different parts of the body that exhibit similar MRI characteristics. We review strategies to distinguish schwannomas from malignant soft-tissue tumors while exploring the anatomic and histologic origins of these tumors to discuss how this correlates with their imaging findings. Familiarity with the MRI appearance of schwannomas can help aid in the differential diagnosis of soft-tissue masses, especially in unexpected locations.

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