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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Value of contrast-enhanced ultrasound in diagnosis and differential diagnosis of polypoid lesions of gallbladder ≥ 1 cm

Fig. 1

Gallbladder carcinoma. a Ultrasonography (US) showed a hypoechoic tumor, 5.2 × 4.3 cm in size with an obscure boundary. The blood flow can be detected within the tumor on Color Doppler flow imaging. b, c On contrast-enhanced ultrasound (CEUS), the lesion showed heterogeneous enhancement at 18 s in the arterial phase (b) and hypo-enhancement in comparison to the normal gallbladder (GB) wall at 34 s in the venous phase (c). The central non-enhancement area was presented through the whole CEUS process. d Postoperative pathological results: moderately to poorly differentiated GB carcinoma with infiltration of the GB wall

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