Faculty Opinions recommendation of Computed tomography and magnetic resonance imaging characteristics of acute invasive fungal sinusitis.

2012 ◽  
Author(s):  
Erik K Weitzel ◽  
Tom Willson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Fungal Sinusitis ◽  
Resonance Imaging ◽  
Invasive Fungal Sinusitis ◽  
Imaging Characteristics

Imaging findings of trichilemmal cyst and proliferating trichilemmal tumour

2021 ◽  
pp. 197140092110177
Author(s):  
Masaya Kawaguchi ◽  
Hiroki Kato ◽  
Natsuko Suzui ◽  
Tatsuhiko Miyazaki ◽  
Hiroyuki Tomita ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Hounsfield Units ◽  
Soft Tissue Density ◽  
Cutaneous Lesions ◽  
Imaging Characteristics ◽  
Trichilemmal Cyst ◽  
T1 Hyperintensity

Purpose The purpose of this study was to evaluate computed tomography and magnetic resonance imaging of benign trichilemmal cysts and proliferating trichilemmal tumours. Methods Nineteen histologically confirmed cutaneous lesions with trichilemmal keratinisation (12 trichilemmal cysts and seven proliferating trichilemmal tumours) were enrolled. Among them, 10 lesions (six trichilemmal cysts and four proliferating trichilemmal tumours) were examined by computed tomography, while 13 lesions (eight trichilemmal cysts and five proliferating trichilemmal tumours) were examined by magnetic resonance imaging. Computed tomography and magnetic resonance imaging characteristics were retrospectively reviewed. RESULTS Sixteen lesions (84%, 10 trichilemmal cysts and six proliferating trichilemmal tumours) occurred on the scalp. Lobulated margins were observed in five lesions (26%, three trichilemmal cysts and two proliferating trichilemmal tumours). With respect to computed tomography attenuation, calcification (>200 Hounsfield units) was observed in seven lesions (70%, five trichilemmal cysts and two proliferating trichilemmal tumours), hyperdense areas (≥80 and ≤200 Hounsfield units) in six (60%, three trichilemmal cysts and three proliferating trichilemmal tumours), and soft tissue density areas (<80 Hounsfield units) in nine (90%, five trichilemmal cysts and four proliferating trichilemmal tumours). On T1-weighted images, intratumoral hyperintensity was only observed in eight trichilemmal cysts but no proliferating trichilemmal tumours (100% vs. 0%, P<0.01). On T2-weighted images, hypointense rim and intratumoral hypointensity was observed in all 13 lesions (100%, eight trichilemmal cysts and five proliferating trichilemmal tumours), and linear or reticular hypointensity was observed in 10 (77%, six trichilemmal cysts and four proliferating trichilemmal tumours). Conclusion Trichilemmal cysts and proliferating trichilemmal tumours predominantly occurred on the scalp with calcification, and usually exhibited linear or reticular T2 hypointensity. Intratumoral T1 hyperintensity may be a useful imaging feature for differentiating trichilemmal cysts from proliferating trichilemmal tumours.

scholarly journals Computed tomography and magnetic resonance imaging findings in infants with microcephaly potentially related to congenital Zika virus infection

2018 ◽  
Vol 51 (2) ◽  
pp. 119-122 ◽  
Author(s):  
Aníbal Araujo Alves Peixoto Filho ◽  
Simone Baltar de Freitas ◽  
Márcio Morikoshi Ciosaki ◽  
Lourenço Nogueira e Oliveira ◽  
Onildo Tavares dos Santos Júnior
Keyword(s):  
Public Health ◽  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Zika Virus ◽  
Public Health Emergency ◽  
Northeastern Brazil ◽  
Resonance Imaging ◽  
Imaging Characteristics ◽  
Pictorial Essay

Abstract The recent association between the increase in the number of neonates with microcephaly in northeastern Brazil and the outbreak of infection with the Zika virus, which has been occurring in the Americas, has been declared a public health emergency of international concern. The evidence that implicates the virus as the cause of this public health emergency has been demonstrated ever more consistently. This pictorial essay illustrates the imaging characteristics seen on computed tomography and magnetic resonance imaging scans of infants admitted to a rehabilitation hospital with a diagnosis of microcephaly and a maternal history of rash during pregnancy.

scholarly journals A Case of Myxoid Adrenocortical Neoplasm: Computed Tomography and Magnetic Resonance Imaging Characteristics

Rare Tumors ◽  
2013 ◽  
Vol 5 (3) ◽  
pp. 175-177 ◽  
Author(s):  
Hiroki Fukuhara ◽  
Vladimir Bilim ◽  
Hiroya Ohtake ◽  
Yoshie Yahagi ◽  
Yoshihiko Tomita
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Adrenocortical Neoplasm ◽  
Imaging Characteristics

Diagnostic modalities for distal radioulnar joint

2016 ◽  
Vol 42 (4) ◽  
pp. 395-404 ◽  
Author(s):  
S. Jens ◽  
T. Luijkx ◽  
F. F. Smithuis ◽  
M. Maas
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Imaging Modality ◽  
Conventional Radiography ◽  
Distal Radioulnar Joint ◽  
Resonance Imaging ◽  
Radioulnar Joint ◽  
Joint Pathology ◽  
Imaging Characteristics

The first imaging modality in patients suspected of distal radioulnar joint pathology should be conventional radiography to exclude or diagnose wrist pathology including osteoarthritis, rheumatoid arthritis, calcium pyrophosphate deposition disease, (healed) fractures, or impaction syndromes. When conventional radiography is inconclusive, high resolution 3 Tesla magnetic resonance imaging is advised. We provide a broad overview of the literature regarding the use of intra-articular contrast both with computed tomography (CTA) or magnetic resonance imaging (MRA). Conventional arthrography and unenhanced computed tomography are not indicated. This article discusses the most useful imaging techniques in terms of clinical indications, patient positioning, technical imaging requirements, and diagnostic performance in patients with suspected distal radioulnar joint pathology. Furthermore, the most prevalent pathologies are discussed, with the focus on imaging characteristics in both stable and unstable distal radioulnar joints.

Imaging characteristics of a Stafne bone cavity—panoramic radiography, computed tomography and magnetic resonance imaging

2014 ◽  
Vol 18 (3) ◽  
pp. 351-353 ◽  
Author(s):  
Florian Andreas Probst ◽  
Monika Probst ◽  
Ira-Zacharoula Maistreli ◽  
Sven Otto ◽  
Matthias Troeltzsch
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Panoramic Radiography ◽  
Resonance Imaging ◽  
Imaging Characteristics

scholarly journals Computed tomography and magnetic resonance imaging findings of nasal chondromesenchymal hamartoma in a young child: a case report

2020 ◽  
Vol 48 (8) ◽  
pp. 030006052092043
Author(s):  
Ya-qiong Cui ◽  
Li-li Wang ◽  
Gang Huang ◽  
Lian-ping Zhao
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Malignant Neoplasm ◽  
Radical Excision ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Radiographic Appearance ◽  
Imaging Characteristics ◽  
Nasal Chondromesenchymal Hamartoma

Nasal chondromesenchymal hamartoma (NCMH) is a rare destructive benign neoplasm that predominantly develops in infants and young children. The lesion is usually located in the nasal cavity, often in the adjacent paranasal sinuses and orbital region and especially in the ethmoid sinus. Because the imaging characteristics of NCMH often mimic the features of malignant tumors, it is clinically important to study the radiographic appearance of this disease. Therefore, we herein present the computed tomography and magnetic resonance imaging findings of NCMH occurring in a 7-year-old girl. The mass was resected via an endoscopic surgical approach and definitively diagnosed as NCMH based on histologic and immunohistochemical analysis. However, signs of tumor recurrence manifested 45 months after surgery. NCMH can be locally aggressive with an expansive and destructive radiographic appearance, which highly implies a malignant neoplasm. Hence, an accurate diagnosis is essential to avoid potentially harmful therapies, and detailed computed tomography or magnetic resonance imaging should be performed prior to surgery. Selective arterial embolization is also an important part of preoperative management because the degree of enhancement may not be adequate to determine the blood supply of the tumor. Moreover, complete radical excision cannot guarantee that the lesion will not recur.

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