PMC5727657_01
Coronal T2-weighted MR image reveals a heterogeneous oval-shaped right lacrimal gland mass with low and high signals containing solid and cystic components (a). Fat-saturated axial postcontrast MR image obtained at 20 months before the admission shows heterogeneous intense enhanced mass due to unenhancing cystic component (b). Coronal T2-weighted MR image shows a heterogeneous oval-shaped predominantly solid mass with low and high signals without a clear cystic component (c). Fat-saturated axial postcontrast MR image on admission shows almost homogeneous intense enhancement (d).
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MR images performed 20 months prior to this admission, there had been an irregular oval-shaped soft tissue mass with cystic component in the right lacrimal gland abutting the right globe, and patient had refused the operation at that time. MR images on this admission revealed that tumour was almost replaced by solid component without significant change in size (Figure 1).
Hematoxylin and eosin stain (original magnification x20) (a) and periodic acid schiff/alcian blue stain (original magnification x20) (b) of the tumour specimen showing the pathologic features of a low-grade mucoepidermoid carcinoma of the lacrimal gland.
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Based on these histopathological findings, MEC was diagnosed (Figure 2), and the patient was referred to pediatric oncology.