Alveolar Soft-Part Sarcoma of the Head and Neck: Clinical and Imaging Features in Five Cases
Ho Sung Kima,
Ho Kyu Leea,
Young-Cheol Weonb and
Hyung-Jin Kimb
a Department of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea
b Department of Radiology, Sungkyunkwan University School of Medicine, Samsung Medical Center,Seoul, Republic of Korea
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FIG 1. MR images of ASPS in a 16-year-old boy with tongue mass (case 1).
A, Axial T1-weighted MR image shows a large tongue mass with isointensity compared with neck muscles.
B, Sagittal contrast-enhanced T1-weighted MR image shows a large tongue mass with strong enhancement and signal voids in it (arrow).
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FIG 2. CT and MR images of ASPS in a 4-year-old girl with tongue mass (case 2).
A, Contrast-enhanced CT scan shows a large tongue mass with strong homogeneous enhancement in the left side of the tongue.
B, Coronal T1-weighted MR image shows a large tumor with slightly high signal intensity in the tongue.
C, Coronal T2-weighted MR image shows a high-signal-intensity tumor with vascular signal voids (arrow) in the tongue.
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FIG 3. CT scans of ASPS in a 10-year-old girl with laryngeal mass (case 3).
A, Contrast-enhanced CT scan shows a lobulating-contoured mass with strong enhancement in the right true vocal cord.
B and C, Sagittal (B) and Coronal (C) reconstruction images show that the tumor extends from the right pyriform sinus to the upper trachea level.
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FIG 4. MR image of ASPS in a 16-year-old girl with mass in the left paravertebral space (case 5). Axial contrast-enhanced T1-weighted MR image shows a large paravertebral space mass with strong enhancement and signal voids in it.
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FIG 5. MR and DSA images for preoperative tumor embolization of ASPS in a 22-year-old man with buccal space mass (case 4).
A, Axial contrast-enhanced T1-weighted MR image shows a high-signal-intensity tumor with vascular signal voids in the buccal space.
B, Lateral projection of right external carotid angiogram shows prominent tumor staining supplied from branches of the internal maxillary artery.
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