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Figure 8 | Diagnostic Pathology

Figure 8

From: Histological variants of cutaneous Kaposi sarcoma

Figure 8

Lymphangioma-like Kaposi sarcoma. A. Low-power photomicrograph depicting the upper dermal expansion by a proliferation that is distinctly reminiscent of a lymphatic neoplasm or malformation. Note the reactive epidermal hyperplasia and hyperkeratosis (H&E stain). B. Closer view of the "lymphangiomatous" proliferation, with each gaping channel lined by a monolayer of plump Kaposi sarcoma cells, and frothy, pale eosinophilic intraluminal fluid resembling lymph (H&E stain). C. Positive staining of lining cells with the lymphatic endothelial marker D2-40. D. Nuclei of the same cellular population show immunoreactivity for LNA-1.

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