Spontaneous necrosis of solid gallbladder adenocarcinoma accompanied with pancreaticobiliary maljunction

Figure 1 Plain US. (A) of the GB showing wall thickening of the neck and body (consistent with cholecystitis), a strong echoic level with acoustic shadow at the neck (consistent with stones), and a mass-like lesion of the fundus, and Doppler US (B) revealing no blood flow in the mass-like lesion.