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| This
lesion is seen most frequently in young children. The tumor tends to be diffuse and poorly outlined in the
orbit. This lesion may wax
and wane in size, especially when the child has an upper respiratory
infection. Occasionally these
tumors may undergo a rapid expansion in size when there is an acute
hemorrhage in one of the tumor spaces forming a large, chocolate cyst.
Histopathologically, the lesion is composed of multiple,
irregular-shaped lymphatic channels which are lined by flatten endothelial
cells (#22126) (#22125). These
lesions may also have large follicles or collections of lymphoid cells
located within the walls of the lesion.
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| High
Power #22126 |
Med.
Power #22125 |
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