PMC3770022_01
The Doppler ultrasonography of neck reveals a heterogeneous predominantly hypoechoic mass on the left carotid space showing mild peripheral vascularity.
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Doppler ultrasonography revealed hypoechoic mass in the left carotid space showing mild peripheral vascularity (Figure 1).
Computed tomography of the neck shows a heterogeneously enhancing hypodense mass on the left carotid space causing splaying of carotid bifurcation.
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Computed tomography of the neck showed a heterogeneously enhancing hypodense mass in the left carotid space causing splaying of carotid bifurcation (Figures 2 and 3).
Computed tomography of the neck shows heterogeneously enhancing hypodense mass in left carotid space causing splaying of carotid bifurcation.
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Computed tomography of the neck showed a heterogeneously enhancing hypodense mass in the left carotid space causing splaying of carotid bifurcation (Figures 2 and 3).
T1-weighted MR image reveals isointense mass on the left carotid space.
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On MRI examination, the mass was predominantly hypointense on T1- and hyperintense on T2-weighted images (Figures 4 and 5).
T2-weighted MR image shows hyperintense mass with central cystic component.
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On MRI examination, the mass was predominantly hypointense on T1- and hyperintense on T2-weighted images (Figures 4 and 5).
MR angiography image is showing splaying of external and internal carotid vessels on the left side.
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Also MR angiography confirmed splaying of external and internal carotid vessels on the left side (Figure 6).
Histopathology slide of the surgical specimen is consistent with diagnosis of Antoni A schwannoma.
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Histopathology confirmed diagnosis of cervical sympathetic chain schwannoma with distinct Antoni A areas (Figure 7).
PMC3770022_02
On USG neck, hypoechoic mass is seen on the left parapharyngeal space showing mild vascularity on Doppler study.
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USG neck revealed hypoechoic mass on the left parapharyngeal space showing mild vascularity on the Doppler study (Figure 8).
On CT scan, neck with contrast reveals a predominantly isodense mass on the left parapharyngeal space showing mild heterogeneous contrast enhancement. Note the insinuation of the mass between internal and external carotid arteries with resultant splaying of internal and external carotid arteries.
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On CT scan, large heterogeneous predominantly isodense to hypodense mass was seen in the left parapharyngeal space showing mild heterogeneous contrast enhancement (Figure 9).
Coronal reconstructed CT image demonstrates splaying of carotid bifurcation by the mass.
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Mass was seen insinuating between internal and external carotid arteries with resultant splaying of internal and external carotid arteries (Figure 10).
Digital subtraction angiography reveals hypovascular mass causing splaying of internal and external carotid arteries.
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Digital subtraction angiography revealed hypovascular mass causing splaying of internal and external carotid arteries (Figure 11).
Histopathology slide of the surgical specimen is consistent with diagnosis of Antoni B type of schwannoma.
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On histopathology, mass was proven to be vagal schwannoma (Figure 12).