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Fig. 2B —Series of axial proton density–weighted MR images in
asymptomatic 28-year-old male athlete depict anatomy pertinent to assessment
of groin pain. Further inferiorly, anterior (arrow) and posterior
(arrowhead) walls of inguinal canal are again noted, and spermatic
cord (S) is best visualized on this image. Observe how posterior inguinal
wall, composed of the two closely apposed internal oblique and transversus
abdominis muscles, appears to merge with rectus abdominis, best seen on left
side of image.