PMC4293813_01
Eye.
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Fig1
A subconjunctival worm was well-visible (Figure 1).
Stripes and ridges.
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Fig2
Characteristic longitudinal ridges and delicate transverse stripes typical for D. repens cuticle were recognized (Figure 2).
MRI of orbital tumor.
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Fig3
The ultrasound and MRI revealed an enlarged lacrimal gland (Figure 3).
Morphological and immunohistochemical features of extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) of ocular adnexal. A) Monotonous population of small centrocytic cells with scant cytoplasm (ocular adnexal section HE, x200 magnification), B) MALT lymphoma cells express CD20 (+).There are scattered glands of ocular adnexal (red stars in all figures) (CD20 immunostain x200 magnification), C) MALT lymphoma with few lymphoepithelial lesions - the tumour cells infiltrate the glands (red arrow) (CD20 immunostain x400 magnification), D) MALT lymphoma with low number of normal T CD3 (+) lymphocytes (CD3 immunostain x400 magnification). In addition to the figures, the lymphoma cells are negative for CD43 (-) and CD5 (-). Plasmacytic differentiation is present in approximately 20% of MALT cells with CD138 (+) expression on this subpopulations of lymphoma cells. Tumour cells show kappa (+)/lambda (-) light chain restriction by immunohistochemical reaction.
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Fig4
The diagnosis was extranodal marginal zone lymphoma of mucosa associated tissue (MALT lymphoma) (Figure 4).