Two Case Reports of Intravenous Leiomyomatosis with Hyaluronan Expression

Figure 1

(a) Large tumor occupying the abdominal cavity on a computerized tomography scan. (b) The histopathological diagnosis is leiomyoma (H&E 200×), based on the absence of nuclear atypia and a low mitotic index. (c) Tumor cells stained strongly positive for Alcian blue at a pH of 2.5 (200×). (d) Alcian blue staining disappears after hyaluronidase digestion (200×).

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