It had originally been a port-red color—and by lamplight, at least, still was—but it now featured a number of rather pancreas-shaped faded spots, unsentimental mementos, all, of a series of household pets.
There are no more uses of "pancreas" in the book.
Show samples from other sources
Something in his pancreas, the other one said.
James McBride -- The Color of Water
Gey gave his lab staff careful instructions for growing GeGe, a line of cancer cells taken from his pancreas.
Rebecca Skloot -- The Immortal Life of Henrietta Lacks