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Fig. 3 | Diagnostic Pathology

Fig. 3

From: Patient with composite haemangioendothelioma containing angiosarcoma-like areas in the setting of congenital lymphoedema mimicking Stewart-Treves syndrome: a case report

Fig. 3

Light microscopy of Dabska-like component of the composite hemangioendothelioma - tumour consisted of cavernous vascular spaces containing papillary protrusions with hyalinised cores, which were covered with columnar endothelial cells with hobnail or even matchstick-like features. There were neither mitoses nor severe nuclear atypia present. (a H&E staining, 400x) Immunohistochemistry showed diffuse positivity for CD31 of the tumour cells (b IHC, 200x), while CD34 staining was negative (c IHC, 200x). Focal D2-40 positivity within slit-like spaces at the periphery was observed (d IHC, 200x)

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Diagnostic Pathology

ISSN: 1746-1596

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