The Korean Journal of Clinical Oncology (Korean J Clin Oncol, KJCO) is an official publication of the Korean Society of Surgical Oncology. KJCO serves its readers as the single most credible, authoritative resource for disseminating significant clinical oncology research. Its scope comprised the followings: gastrointestinal, breast, head and neck cancer and soft tissue tumor including other organs tumors; molecular oncology; cancer prevention; clinical trial for chemotherapy; supportive care and quality of life issues. Its publication types include original articles, reviews, case reports, correspondences, and editorials. The journal is published biannually (June, December) and distributed to members of the Korean Society of Surgical Oncology, medical schools, libraries, and related institutes to pursue the academic advancement in clinical oncology and to promote an active communication between the members and international societies of clinical oncology. Eventually, the Journal aims to cure of cancer and improvement of public health.