"A 45-year-old man was referred for investigation of an undescended right testis by computed tomography (CT). An ultra-sound scan showed a normal testis and epididymis on the left side. The right testis was not visualized in the scrotal sac or in the right inguinal region. On CT scanning of the abdomen and pelvis, the right testis was not identified but the left side of the scrotum seemed to be occupied by a screaming ghost-like apparition (Figure 1). By chance, the distribution of normal anatomical structures within the left side of the scrotum had combined to produce this image. What of the undescended right testis? None was found. If you were a right testis, would you want to share the scrotum with that?"
And for your enjoyment, Figure 1 (the free PDF is available here):
Thanks to Tom for today's ROFL!