PMC6243368_01
Sublingual gland hypertrophy with herniation through a mylohyoid defect. The right sublingual gland (blue arrows with black outline) within the right mylohyoid defect appears as a pseudolesion on coronal images. Note the intact left mylohyoid muscle (red arrow on a). Note also that, on T1 and T2 weighted images, the sublingual gland shows signal intensity that is higher than muscle and lower than fat. Coronal (a) T2 weighted, (b) T1 weighted and (c) T1 weighted post-gadolinium with fat saturation sequence.
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fig1
The axial images were, however, of suboptimal quality owing to movement artefact. The patient was recalled for post-contrast examination 2 weeks later (Figure 1).
T1 weighted post-gadolinium MR contrast with fat saturation. Sequential slices (inferior to superior a, b, c) showing the right sublingual salivary gland (blue arrows with black outline) with herniation through the right mylohyoid gap (red arrows on a, c). Note the intact left mylohyoid (white arrows on c) with absent left sublingual gland.
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fig2
The right sublingual glandular tissue was seen to be protruding through the right mylohyoid gap in the coronal section (Figure 2a) and further visualized in the axial section (Figure 2b).