To the Editor:Metastatic melanoma of the gallbladder is extremely rare,and despite appropriate therapy its prognosis is poor withfew patients surviving more than 2 years. We present acase of gallbladder involvement by malignant melanomain a To the Editor: Metastatic melanoma of the gallbladder is extremely rare, and despite appropriate therapy its prognosis is poor withfew patients surviving more than 2 years. We present acase of gallbladder involvement by malignant melanomain a