Inclusion Criteria:

1. Ductal adenocarcinoma

2. Age ≥20 and ≤80

3. General performance status: the Karnofsky score> 70% or ECOG 0-1

4. Potentially Curative resection

5. Tumor size < 3cm

6. Pancreatic cancer located on neck or body portion

7. No invasion to spleen or spleen hilum

8. No combined resection except Lt. adrenal gland

9. Distance more than 5cm (≥5cm) between tumor lateral margin and spleen hilum

Exclusion Criteria:

1. Unresectable or locally advanced, metastatic case

2. Patients who do not want surgery

3. ASA (American society of anesthesiologists' physical status classification) score: ≥3

4. Patients with drug or alcohol addiction

5. Patients showing low compliance

6. Patients who not want to involve the clinical trial

7. Patients who are unable to read or understand the informed consent, sign a consent
form (eg, mental retardation, blindness, illiteracy, foreign, etc.)