Given the task definition and input, reply with output. Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Abstract: A [99mTc]RBC study in a 63-yr-old man showed intrahepatic lesions which initially had less activity than surrounding liver tissue. When viewed 3 hr later, these had "reversed" and the lesions revealed increased uptake of the radiolabeled red cells. Some extrahepatic areas showed the same pattern (these were in the mesentery of the small bowel). The lesions proved to be angiosarcomas. Hence, the behavior of labeled red cells in these angiosarcomas mimicked that in benign hemangiomas.
Which is the apt title for the abstract? option1: Hepatic angiosarcoma: mimicking of angioma on three-phase technetium-99m red blood cell scintigraphy. option2: Is the corneal posterior cell layer truly endothelial?
Hepatic angiosarcoma: mimicking of angioma on three-phase technetium-99m red blood cell scintigraphy.