Fig. 1
From: The role of 18F-FDG-PET/CT in evaluating retroperitoneal masses -Keeping your eye on the ball!
Case One - Staging FDG-PET/CT demonstrates intense FDG-avidity (SUVmax 19) in a bulky and heterogeneous retroperitoneal mass [orange arrows] (a1–3, b1–2). A retractile testis [red arrow] (b1–2), also intensely FDG-avid (SUVmax 16.4), is shown to be undescended at the time of imaging, situated adjacent to the deep inguinal ring. The maximal intensity projection (MIP) image (a) demonstrates absent left scrotal testicular activity [circle]