PMC5738575_01
MRI demonstrated a mass (arrows) in the occipitocervical subcutaneous tissue with uneven signal intensity on (Figure 1(a)) sagittal T2-weighted, (Figure 1(b)) T2-weighted fat suppressed, and (Figure 1(c)) coronal enhanced images.
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The occipitocervical MRI scan (Figure 1) showed an approximate lesion measuring 11.2 x 3.5 x 6.9 cm with an irregular shape, unclear boundary, and uneven signal intensity on sagittal T2-weighted imaging (WI), dominantly high signal intensity on T2-WI fat suppressed, and markedly heterogeneous enhancement on coronal enhanced scan in the occipitocervical subcutaneous tissue.
Histological analysis of specimen (hematoxylin and eosin stain; magnification x100) showed abnormal lymphatic (black arrowheads) and blood vessels (black stars) with polycystic spaces.
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Histopathological examination (Figure 2) revealed abnormal lymphatic and blood vessels with polycystic spaces, thin wall, and dyed red lymph and blood cells within the lumen, which confirmed a diagnosis of hemolymphangioma.