Pancreatic cancer is a malignancy with an extremely poor prognosis and its incidence has increased in many countries (1-3). Less than 5% of patients with pancreatic adenocarcinomas survive for more than 5 years. The poor response of advanced pancreatic cancer is attributable to the infiltrative property of pancreatic cancer cells (4), to poor therapeutic options, and to the current incomplete knowledge concerning the pathogenesis and biology of the tumor (3). The current methods of treating pancreatic cancer are far from satisfactory, and not all patients benefit from these methods of treatment; the overall results of systemic and regional chemotherapy for pancreatic cancer are disappointing. To date, the most effective chemotherapy drug has been gemcitabine (difluorodeoxycytidine), which produces a response rate of 4-36% in pancreatic cancer patients (5-7). However, despite these relatively high response rates, a complete response is achieved in very few patients. Therefore, it is unclear whether chemotherapy actually prolongs survival.In this report, we describe the case of a patient in whom effective results were achieved using a new combination of the chemotherapeutic agents, gemcitabine and α-interferon (α-INF).
CASE REPORTIn a 68-year-old Japanese man admitted to Nagoya City University Hospital, pancreatic body cancer with liver metastases was diagnosed. His family history was unremarkable. The laboratory data on admission were within normal limits, except for Manuscript a slightly elevated serum glutamic pyruvic transferase (GPT), 53 U/L (normal range, 6-37). Levels of carbohydrate antigen 19-9 (CA19-9) and carcinoembryonic antigen (CEA) were 122 U/ml and 1.3 ng/ml, respectively. Abdominal computed tomography (CT) showed a low-density mass in the pancreatic body ( Figure 1A) and multiple liver metastases ( Figure 1B). Endoscopic retrograde pancreatography (ERP) revealed that a tumor was obstructing the main pancreatic duct in the body. Digital subtraction angiography (DSA) demonstrated an exclusion of the posterior inferior pancreaticoduodenal artery by the mass. The patient underwent a surgical resection, a distal pancreatectomy. To deliver chemotherapeutic drugs to liver metastases, a subcutaneous port (Septum Port Cathether, MD-90306; Sumitomo Bakelite, Tokyo) was implanted, the catheter of which was inserted into the gastroduodenal artery with the tip positioned at the junction of the proper hepatic artery.
Pathological FindingsMacroscopic Findings. The resected mass measured 4.0 × 2.0 × 2.0 cm. Its cut surface was elastic, hard, and whitish, with some parts yellowish. The margin of the tumor was clear.Microscopic Findings. Histopathologically, examination of the pancreas sections revealed moderately differentiated adenocarcinomas of pancreatic body without lymph node metastasis.Immunohistochemistry. Strong positive immunostaining for α 6 integrin subunit and interleukin-1 receptor type I (IL-1RI) was found in the cancer cells (Figures 2A and B). Immunoreactivity against p53 was also positive in the ca...