PMC3825965_01
A follow-up PET-CT revealed the uptake of FDG only at the gallbladder (SUVmax 7.1).
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She underwent follow-up PET-CT and FDG uptake was detected at the gallbladder (Fig. 1).
Contrast abdominal CT showed an early enhanced mass in the gallbladder (arrow) and the enhancement persisted on the equilibrium phase, suggesting gallbladder cancer. (a) Early phase. (b) Equilibrium phase.
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Contrast abdominal CT revealed an early enhanced mass in the gallbladder, and the enhancement persisted in the equilibrium phase (Fig. 2).
MRI demonstrated that the gallbladder tumor (arrow) showed low signal intensity on T1-weighted images and slightly high on T2-weighted images. (a) T1-weighted images. (b) T2-weighted images.
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On MRI, the tumor showed low signal intensity on T1-weighted images and slightly high intensity on T2-weighted images (Fig. 3).
The gallbladder tumor was macroscopically soft and whitish measured 7.5 cm x 5 cm in size.
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The tumor was soft, whitish, and measured 7.5 cm x 5 cm (Fig. 4).
Immunohistochemical examination revealed that the gallbladder tumor was not similar to the original nasal melanoma. HMB-45 staining was far less positive in the gallbladder tumor than in the nasal tumor. (a) Gallbladder tumor, HE staining. (b) Gallbladder tumor, HMB-45 staining. (c) Nasal tumor, HE staining. (d) Nasal tumor, HMB-45 staining (200x).
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Immunohistochemical examination revealed that the tumor was not similar to nasal melanoma, i.e., HMB-45 staining was far less positive in the gallbladder tumor than in the nasal tumor (Fig. 5).