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Fig. 2A —44-year-old man was referred for CT after incidental detection of
suspected right internal iliac artery arteriovenous (AV) fistula seen during
performance of cerebral angiographic study. Pertinent history was pelvic
fracture 20 years earlier. Axial contrast-enhanced arterial phase MDCT scan at
S1 level shows evidence of hypertrophy of right gluteus medius (MED) muscle
and, to lesser degree, right gluteus maximus muscle. Dilated pelvic veins are
consistent with right internal iliac artery AV fistula.
