case_images: PMC9869679_01
case_images: (A) Multiple tortuous tubular structures within an irregularly shaped anechoic lesion were revealed by B-mode ultrasound. (B) Color Doppler flow imaging displayed rich colorful blood flow signals as a colored mosaic pattern. (C) Spectral Doppler showed continuous turbulent flow in the systolic and diastolic phases with a high-velocity low-resistance waveform.
case_images: fsurg-09-907234-g001.jpg
case_images: PMC9869679_01_fsurg-09-907234-g001.jpg
case_images: F1
case_images: Color Doppler flow imaging (CDFI) displayed rich colorful blood flow signals as a colored mosaic pattern in the same lesion, and spectral Doppler showed continuous turbulent flow in the systolic and diastolic phases with a high-velocity low-resistance waveform (Figure 1).
case_images: Computed tomographic angiography showed a large pelvic arteriovenous malformation (red arrow) supplied mainly by the right internal iliac artery.
case_images: fsurg-09-907234-g002.jpg
case_images: PMC9869679_01_fsurg-09-907234-g002.jpg
case_images: F2
case_images: The patient underwent computed tomographic angiography (CTA) after the sonographic diagnosis of pelvic AVM, whereby a large pelvic AVM supplied mainly by the right internal iliac artery was found (Figure 2), thus confirming the final diagnosis of pelvic AVM.
case_images: (A) Arteriography demonstrated pelvic arteriovenous malformation and feeding arteries arising from the right internal iliac artery. (B) Arteriography postembolization.
case_images: fsurg-09-907234-g003.jpg
case_images: PMC9869679_01_fsurg-09-907234-g003.jpg
case_images: F3
case_images: When arteriography indicated feeding arteries arising from the right internal iliac artery, the right internal iliac artery was embolized by spring coils (Figure 3).
case_images: (A) Part of the irregularly shaped anechoic lesions became hypoechoic (red arrow) in the B-mode ultrasound. (B) Color Doppler flow imaging showed the colored mosaic pattern decreased in volume. (C) Spectral Doppler showed the systolic blood flow velocity is reduced after embolization.
case_images: fsurg-09-907234-g004.jpg
case_images: PMC9869679_01_fsurg-09-907234-g004.jpg
case_images: F4
case_images: He remained asymptomatic during the follow-up period and was re-examined with abdominal US 19 months after embolization, in which the pelvic AVM decreasing in volume and the systolic blood flow velocity reduction were revealed (Figure 4).