This well crafted story concerns a contemporary woman in her thirties who undergoes significant personal losses; in fact, she seems to lose or lack an identity. Over the years, Kat, an "avant garde" fashion photographer, has altered her image, even her name, to suit the situation and the times. She has had two abortions and "learned to say that she didn't want children anyway."

The story begins when Kat undergoes surgical removal of a rare and peculiar ovarian tumor containing hair, teeth, bones (the clinical term is a dermoid cyst ); Kat dubs it "hairball " and stores it in formaldehyde on her mantelpiece. We learn that Kat's relationship with her married lover is going sour, that he will replace her as creative director at work. She fantasizes that she has given birth to "hairball" who she sees as the "warped child" of their failed relationship. Physical symptoms accompany Kat's growing emotional confusion. Hairball becomes the vehicle for an ultimate bizarre act reflecting Kat's personality disintegration. She has gone from being Katherine to Kath to Kat, to K, to being "temporarily without a name."