Fig 1 - Medial acoustic neuromas: Clinical and surgical implications: Clinical article

Magnetic resonance and CT images obtained in a patient in this study demonstrating the characteristic features of medial acoustic neuroma. A: Axial 3D-SPACE MR image depicting a large medial acoustic tumor; note the CSF formation juxtaposed against the tumor, with expansion of the cisterns anteriorly and posteriorly, the presence of CSF filling the IAC and the absence of any CSF rim against the brainstem. B and C: Axial (B) and coronal (C) T1-weighted Gd-enhanced MR images of tumor prior to resection, demonstrating the large size of the tumor, absence of tumor in the meatus, and presence of brainstem compression. D: Preoperative coronal CT scan demonstrating symmetric bilateral IACs, without significant expansion of the meatus region. E and F: Postoperative brain-window (E) and bone-window (F) CT scans demonstrating that removal of a medial acoustic neuroma through the transmastoid approach does not require opening of the IAC.

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Reference

Medial acoustic neuromas: Clinical and surgical implications: Clinical article - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Magnetic-resonance-and-CT-images-obtained-in-a-patient-in-this-study-demonstrating-the_fig1_260215129 [accessed 30 Jun, 2024]

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Fig. 1. Magnetic resonance and CT images obtained in a patient in this study demonstrating the characteristic features of medial acoustic neuroma. A: Axial 3D-SPACE MR image depicting a large medial acoustic tumor; note the CSF formation juxtaposed against the tumor, with expansion of the cisterns anteriorly and posteriorly, the presence of CSF filling the IAC and the absence of any CSF rim against the brainstem. B and C: Axial (B) and coronal (C) T1-weighted Gd-enhanced MR images of tumor prior to resection, demonstrating the large size of the tumor, absence of tumor in the meatus, and presence of brainstem compression. D: Preoperative coronal CT scan demonstrating symmetric bilateral IACs, without significant expansion of the meatus region. E and F: Postoperative brain-window (E) and bone-window (F) CT scans demonstrating that removal of a medial acoustic neuroma through the transmastoid approach does not require opening of the IAC.

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<a href="https://www.researchgate.net/figure/Magnetic-resonance-and-CT-images-obtained-in-a-patient-in-this-study-demonstrating-the_fig1_260215129"><img src="https://www.researchgate.net/profile/Wenya-Linda-Bi-2/publication/260215129/figure/fig1/AS:336740838592512@1457296680824/Magnetic-resonance-and-CT-images-obtained-in-a-patient-in-this-study-demonstrating-the.png" alt="Magnetic resonance and CT images obtained in a patient in this study demonstrating the characteristic features of medial acoustic neuroma. A: Axial 3D-SPACE MR image depicting a large medial acoustic tumor; note the CSF formation juxtaposed against the tumor, with expansion of the cisterns anteriorly and posteriorly, the presence of CSF filling the IAC and the absence of any CSF rim against the brainstem. B and C: Axial (B) and coronal (C) T1-weighted Gd-enhanced MR images of tumor prior to resection, demonstrating the large size of the tumor, absence of tumor in the meatus, and presence of brainstem compression. D: Preoperative coronal CT scan demonstrating symmetric bilateral IACs, without significant expansion of the meatus region. E and F: Postoperative brain-window (E) and bone-window (F) CT scans demonstrating that removal of a medial acoustic neuroma through the transmastoid approach does not require opening of the IAC."/></a>