Case Report
Copyright ©The Author(s) 2019.
World J Clin Cases. Aug 26, 2019; 7(16): 2302-2308
Published online Aug 26, 2019. doi: 10.12998/wjcc.v7.i16.2302
Figure 1
Figure 1 Primary melanoma of the biliary tract. A: The melanoma formed a polypoid mass that infiltrates the wall of the extrahepatic bile duct; B: At high magnification, some malignant melanocytes revealed finely granular cytoplasmic melanin; C: Tumour cells revealed strong immunopositivity for the HMB45 antigen.