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Abdomen » Hepatobiliary
Melanoma metastases to the gallbladder
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Author(s) :
Chaitali Shah, FRCR
 
Presentation A 60 year old woman receiving chemotherapy for metastatic melanoma presents for ultrasound of the abdomen.
 
 
 
Caption: Sagittal image of the gallbladder
Description: The gallbladder lumen is almost completely obliterated by a solid appearing mass. The visualized liver appears normal.
 
 
 
Caption: Sagittal image of the gallbladder
Description: The infiltration of the gallbladder by the mass is noted again. The walls appear indistinct and irregularly thickened. A residual lumen of the gallbladder is also noted.
 
 
 
Caption: Transverse image of the gallbladder
Description: The thickened walls of the gallbladder and the solid mass are better seen in this transverse image.
 
 
 
Caption: Sagittal image of the gallbladder
Description: The mass in the gallbladder is visualized here again.
 
 
 
Caption: Sagittal image of the gallbladder
Description: The mass in the gallbladder with the residual lumen is noted again.
 
 
 
Caption: Transverse power Doppler image
Description: The solid mass in the gallbladder exhibits internal vascularity.
 
 
 
Caption: Sagittal power Doppler image
Description: Significant vascularity is noted in the mass.
 
 
 
Caption: Sagittal color Doppler image
Description: A feeder vessel is noted again within the solid mass in the gallbladder.
 
Differential Diagnosis Melanoma metastases to the gallbladder, adenocarcinoma
 
Final Diagnosis Melanoma metastases to the gallbladder
 
Discussion Metastases to the gallbladder from a metastatic melanoma are not very rare. Ultrasound is sensitive in detecting these lesions and therefore a thorough evaluation of the gallbladder should be done when scanning the abdomen of the patient with malignant melanoma.
 
Case References 1. BJ Holloway and DM King. Ultrasound diagnosis of metastatic melanoma of the gallbladder. The British Journal of Radiology, Vol 70, Issue 839 1122-1125.
 
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