Article Figures & Data
Figures
- Fig 1.
KD involving bilateral parotid and periparotid areas in a 45-year-old man. A and B, Axial MR images show ill-defined soft-tissue masses in the bilateral retroauricular areas with infiltration of the adjacent parotid gland. Compared with the adjacent muscle, the lesions are isointense on the T1-weighted image (A) and hyperintense on the fat-suppressed T2-weighted image (B). C, Postcontrast fat-suppressed T1-weighted image shows homogeneous marked enhancement. Note multiple dotlike signal-intensity voids within the lesions, probably representing vascular structures (arrows in C). D, Photomicrograph shows attenuated lymphoid infiltrates rich in eosinophils surrounding numerous thin-walled vascular structures (hematoxylin-eosin, original magnification ×100).
- Fig 2.
KD involving the postauricular area and occipital scalp in an 11-year-old boy. A, Postcontrast axial CT scan shows an ill-defined soft-tissue mass with homogeneous moderate enhancement involving the postauricular area on the right (arrow). Also note a smaller mass with the similar imaging characteristics on the right occipital scalp (arrowhead). B, Postcontrast axial CT scan shows multiple moderately enhancing and enlarged lymph nodes, right greater than left, on both sides of the neck.
- Fig 3.
KD involving bilateral buccal spaces in a 52-year-old man. A, Axial T1-weighted MR image demonstrates ill-defined soft-tissue masses in the bilateral buccal spaces, isointense to the adjacent muscle. Note the reticular infiltration of the subcutaneous tissue around the lesions. B, Postcontrast coronal fat-suppressed T1-weighted MR image demonstrates homogeneous marked enhancement of the lesions. Note tubular or dotlike signal-intensity voids at the periphery of the lesions, probably representing fast-flowing vascular structures (arrows).
- Fig 4.
KD involving bilateral lacrimal glands in a 13-year-old boy. A, Axial T1-weighted MR image shows diffuse enlargement of bilateral lacrimal glands (arrows). The signal intensity of the lesions is slightly hyperintense to the adjacent muscle. B, Postcontrast axial T1-weighted MR image shows homogeneous marked enhancement of the lesions (arrows).
Tables
Summary of CT and MR imaging characteristics of non-nodal KD lesions of the head and neck
Imaging Characteristics No. of Lesions Location (n = 52) Parotid/periparotid 36 Parotid + periparotid 23 Parotid only 4 Periparotid only 9 Buccal space 6 Lacrimal gland 4 Submandibular/submental 3 Scalp 3 Margin (n = 52) Well-defined 1 Ill-defined 51 Density on precontrast CT scans (n = 22)a Hypodense 4 Isodense 18 Signal intensity on MR images (n = 13)a T1-weighted images Isointense 11 Hyperintense 2 T2-weighted images Hyperintense 13 Enhancement on postcontrast CT scans (n = 43) Homogeneous Mild 10 Moderate 22 Marked 3 Heterogeneous Mild 2 Moderate 6 Enhancement on postcontrast MR images (n = 13) Homogeneous Moderate 2 Marked 10 Heterogeneous, marked 1 ↵a Density and signal intensity of the lesion were compared with those of the adjacent muscle.
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