Yellow Submarine

A 78-year-old Beatle fan finally obtains highly sought-after tickets to a tribute band’s revival of Yellow Submarine. Although he admits to night sweats, fatigue, decreased appetite, and an unintentional weight loss of twenty pounds over the last four months, he is determined to attend the concert. People walk up to him at the show and say, “wow, you are a diehard fan, you even painted yourself yellow.” The next day he visits his doctor where he is sent immediately to radiology. And yes, he was a three-pack-a-day smoker for over 40 years.

Question:  An abdominal radiograph of this patient is likely to identify a mass at which of the indicated locations?