Diagnostic accuracy of computed tomography and magnetic resonance imaging compared to surgical exploration for anterior skull base and medial orbital wall infiltration in advanced sinonasal tumors

Head & Neck ◽  
2020 ◽  
Vol 42 (8) ◽  
pp. 2002-2012
Author(s):  
Christian M. Meerwein ◽  
Shila Pazahr ◽  
Michael B. Soyka ◽  
Martin W. Hüllner ◽  
David Holzmann
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Diagnostic Accuracy ◽  
Skull Base ◽  
Anterior Skull Base ◽  
Resonance Imaging ◽  
Surgical Exploration ◽  
Orbital Wall ◽  
Medial Orbital Wall

Pseudo-Cerebrospinal Fluid Leaks of the Anterior Skull Base: Algorithm for Diagnosis and Management

2019 ◽  
Author(s):  
Felipe Constanzo ◽  
Jaime Pinto ◽  
Sahba Sedaghat ◽  
Thomas Schmidt
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Cerebrospinal Fluid ◽  
Magnetic Resonance ◽  
Skull Base ◽  
Nasal Endoscopy ◽  
Csf Leak ◽  
Resonance Imaging ◽  
Surgical Exploration ◽  
Anterior Cranial Base

Abstract Objective Pseudo-cerebrospinal fluid (CSF) leaks are a rare cause of unilateral, watery rhinorrhea. We proposed a step-wise approach to evaluate these cases. Design It involves a single-center retrospective cohort study. Setting The setting is that of a tertiary academic medical center. Participants Ten patients with diagnosis of pseudo-CSF leak over a 21-year period were evaluated using our proposed algorithm that includes computed tomography, magnetic resonance imaging, nasal endoscopy, β-2 transferrin, intrathecal fluorescein, and surgical exploration of the anterior cranial base. Main Outcome Measures The occurrence of intracranial infection and resolution of the symptoms were evaluated at a mean follow-up of 94.4 months. Results Eight patients had history of skull base fracture or surgery. In all patients computed tomography, magnetic resonance imaging, and nasal endoscopy did not show signs of CSF leak. Beta-2 transferrin testing was performed in five patients, being negative in all of them. Intrathecal fluorescein was performed in seven patients, being negative in five and inconclusive in two. Surgical exploration was performed in five patients, definitively ruling out CSF leak. Six patients were treated with intranasal ipratropium, resolving the symptoms in all cases. Conclusion The presented algorithm provides a step-wise approach for patients with unilateral watery rhinorrhea, allowing to safely ruling out CSF leak.

Thumb Injuries and Instabilities. Part 1: Anatomy, Kinesiology, and Imaging Techniques of the Thumb

2021 ◽  
Vol 25 (02) ◽  
pp. 346-354
Author(s):  
Alain G. Blum ◽  
Marnix T. van Holsbeeck ◽  
Stefano Bianchi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Diagnostic Accuracy ◽  
Motor Function ◽  
Crucial Role ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Pathologic Lesions ◽  
Essential Function

AbstractThe unique anatomical characteristics of the thumb offer a broad range of motion and the ability to oppose thumb and finger, an essential function for grasping. The motor function of the thumb and its orientation make it particularly vulnerable to trauma. Pathologic lesions encountered in this joint are varied, and imaging techniques play a crucial role in injury detection and characterization. Despite advances in diagnostic accuracy, acute thumb injuries pose a challenge for the radiologist. The complex and delicate anatomy requires meticulous and technically flawless image acquisition. Standard radiography and ultrasonography are currently the most frequently used imaging techniques. Computed tomography is most often indicated for complex fractures and dislocations, and magnetic resonance imaging may be useful in equivocal cases. In this article, we present the relevant anatomy and imaging techniques of the thumb.

Parasellar epidermoid cyst rupturing into the nasopharynx

2005 ◽  
Vol 119 (2) ◽  
pp. 140-143 ◽  
Author(s):  
A S Shaw ◽  
S E J Connor
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Differential Diagnosis ◽  
Magnetic Resonance ◽  
Skull Base ◽  
Epidermoid Cyst ◽  
Resonance Imaging ◽  
Intracranial Tumours ◽  
Radiological Features ◽  
Magnetic Resonance Imaging Mri

Epidermoid tumours are non-neoplastic inclusion cysts representing up to 1.1 per cent of all intracranial tumours, typically presenting with symptoms related to pressure or intracranial rupture in the fourth or fifth decade of life. The authors present a case of a parasellar epidermoid cyst which has ruptured in to the nasopharynx; to the best of their knowledge, this has not been previously reported. The computed tomography (CT) and magnetic resonance imaging (MRI) are presented. The pathology and radiological features of epidermoid tumours are discussed, particularly in relation to extracranial connections. The differential diagnosis of lesions eroding the central skull base is reviewed.

Can computed tomography and magnetic resonance imaging differentiate between malignant pathology and osteomyelitis in the central skull base?

2015 ◽  
Vol 129 (9) ◽  
pp. 852-859 ◽  
Author(s):  
F D Lesser ◽  
S G Derbyshire ◽  
H Lewis-Jones
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Skull Base ◽  
Resonance Imaging ◽  
Intravenous Contrast ◽  
Skull Base Osteomyelitis ◽  
Bony Destruction ◽  
Soft Tissue Masses

AbstractBackground:Central skull base osteomyelitis is clinically difficult to distinguish from malignancy.Method:The computed tomography and magnetic resonance imaging scans of six patients with central skull base osteomyelitis were compared with scans from patients with a range of skull base conditions.Results and conclusion:Computed tomography scans of central skull base osteomyelitis show much less bony destruction relative to the magnetic resonance imaging changes, whereas malignancy cases were associated with similar bony destruction on computed tomography and magnetic resonance imaging. In magnetic resonance imaging scans, it was possible to confirm previous findings of clival hypointensity on T1-weighted images relative to normal fatty marrow. In addition, there were signs of pre- and para-clival soft tissue infiltration, with the obliteration of normal fat planes and frank soft tissue masses in all six central skull base osteomyelitis patients. Signal intensity on T2-weighted images of the clivus was high in five central skull base osteomyelitis patients. With intravenous contrast, fascial plane anatomy appeared restored in central skull base osteomyelitis cases, almost in keeping with that of non-involved areas. This was not a feature in any of the malignant conditions.

Sign in / Sign up

Export Citation Format

Share Document