The tumors are of very rapid growth, often ending fatally in a few months, especially in children

They are soft and pinkish, gray, or yellowish white, with frequent patches of extravasation. When coming to the surface, they form the so-called fungus hematodes. fibros'. A malignant tumor containing fibrous ti ue with many spindle cells and dilated ve els, giant-celled s. A form of s. (2d def.) which generally grows from the cancellous ti ue of bone, especially from the jaws and the ends of the long bones. It consists structurally of large round, oval, or branched cells, with many nuclei imbedded in a round-celled or spindle celled sarcomatous ti ue, intermediate s. An s. in which the cells are not absolutely differentiated as in fibros' and osteos'. large round-celled s. A s.