We obtained the ultrasonogram of two minor papilla tumors with a sonoendoscope (7.5 MHz) and microprobe (20MHz). A correlation between the ultrasonic image and histological findings was discussed in a case which was completly resected with an endoscope. The resected specimen was composed of pancreatic tissue and Brunner’s glands. Ultrasonography with a 20 MHz microprobe aftr injecting physiological saline into the submucosa was useful in deciding indication for endoscopic mucosal resection.
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