Abstract
The patient was a 72-year-old woman who underwent contrast-enhanced computed tomography (CT) of the abdomen for worsening diabetes. A low-density area with a diameter of 20 mm was seen in the pancreatic body. With endoscopic retrograde cholangiopancreatography (ERCP), the pancreatic duct was found to be blocked in the tail and transitional sections. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) was performed for a hypoechoic mass from the posterior wall of the central gastric body to the pancreatic body. Histological examination identified adenocarcinoma, and pancreatic cancer was diagnosed. Chemotherapy was administered, but the patient died on hospital day 335. With the consent of the family, autopsy was performed. The pancreatic body was found to be adhered to the posterior wall of the central gastric body. A flat, submucosal lesion measuring 16 × 15 mm was seen within the gastric wall of the adhesion site. The gross impression was that the pancreatic tumor and gastric tumor were connected. Histologically, both tissues represented moderately to highly differentiated tubular adenocarcinoma. Few reports have described needle tract seeding after EUS-FNA for pancreatic cancer. We have reported a case in which invasion was confirmed via the EUS-FNA puncture route.
