Purpose
This study aimed to assess the feasibility of operational definitions of cancer patients in conducting cancer-related studies using the claims data from the National Health Insurance Service (NHIS).
Materials and Methods
Cancer incidence data were obtained from the Korean Central Cancer Registry, the NHIS primary diagnosis, and from the rare and intractable disease (RID) registration program.
Results
The operational definition with higher sensitivity for cancer patient verification was different by cancer type. Using primary diagnosis, the lowest sensitivity was found in colorectal cancer (91.5%; 95% confidence interval [CI], 91.7 to 92.0) and the highest sensitivity was found in breast cancer (97.9%; 95% CI, 97.8 to 98.0). With RID, sensitivity was the lowest in liver cancer (91.9%; 95% CI, 91.7 to 92.0) and highest in breast cancer (98.1%; 95% CI, 98.0 to 98.2). In terms of the difference in the date of diagnosis in the cancer registration data, > 80% of the patients showed a < 31-day difference from the RID definition.
Conclusion
Based on the NHIS data, the operational definition of cancer incidence is more accurate when using the RID registration program claims compared to using the primary diagnosis despite the relatively lower concordance by cancer type requires additional definitions such as treatment.
Citations
Citations to this article as recorded by
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PURPOSE The aim of this study was to evaluate the outcome of reoperation in recurrent gastric cancers. MATERIALS AND METHODS We conducted a retrospective analysis of 86 patients who underwent reoperation for recurrent gastric cancer. We reviewed the time interval between first operation and reoperation, as well as the recurrence pattern, type of reoperation, and survival following reoperation. RESULTS the average time to reoperation following curative resection was 27.8+/-25.9 months (median 18.4 months).
Fifty-three cases (61.6%) of reoperation were performed within 2 years follwoing the first operation. The most common reason for reoperation was intestinal obstruction followed by gastric remnant recurrence and intra-abdominal mass. Complete resection was possible in 14 cases (16.3%) and a palliative procedure such as partial resection or bypass procedures was performed in 54 cases. In 18 cases (20.9%), simple lapalotomy was done without any aid. The most common site of recurrence was the peritoneum followed by the gastric remnant, distant lymph node and hematogenous liver metastasis. Operative mortality was 10.5%. Excluding the 9 cases of operative mortality, the mean survival time after reoperation was 15.4+/-2.5 months (mean 8.6 months).
Survival following complete resection was much longer than palliative procedure and exploration only (37.9+/-8.7 vs 10.9+/-1.5 vs 4.7+/-0.8 months, p=0.000) Conclusion : The complete resection of recurrent gastric cancer can prolong survival. Early detection of localized recurrence is important in order to increase the chance of complete resection.
Citations
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Salvage Re-Gastrectomy for Isolated Locoregional Recurrence After Curative Gastrectomy: A Propensity-Matched Comparative Analysis Fahim Kanani, Adi Litmanovich, Yonatan Lessing, Nir Messer, Boaz Sagie, Guy Lahat, Lior Orbach Surgical Techniques Development.2026; 15(1): 6. CrossRef
Management Strategies for Locoregional Recurrence in Early-Stage Gastric Cancer: Retrospective Analysis and Comprehensive Literature Review Ahmed Salem, Sameh Hashem, Layth Y. I. Mula-Hussain, Issa Mohammed, Ala’a Nour, Wael Shelpai, Faiez Daoud, Basem Morcos, Yasser Yamin, Imad Jaradat, Jamal Khader, Abdelatief Almousa Journal of Gastrointestinal Cancer.2012; 43(1): 77. CrossRef
Stereotactic Body Radiotherapy for Isolated Para-aortic Lymph Node Recurrence after Curative Resection in Gastric Cancer Mi-Sook Kim, Sung Yul Yoo, Chul Koo Cho, Hyung Jun Yoo, Kwang Mo Yang, Jin Kyu Kang, Dong Han Lee, Jong Inn Lee, Ho Youn Bang, Min Suk Kim, Hae Jin Kang Journal of Korean Medical Science.2009; 24(3): 488. CrossRef
Usefulness of Reoperation after Recurrence of Gastric Cancer Gui-Ae Jeong, Gyu-Seok Cho, Moon-Su Lee, Yong-Jin Kim, Kil-Ho Kang, Hyung-Soo Kim, Hyung-Chul Kim Journal of the Korean Surgical Society.2009; 77(2): 96. CrossRef
PURPOSE In Korea, breast cancer is the third most common cancer in female following uterine cervix cancer, stomach cancer, and the incidence is increasing year by year. MATERIALS AND METHODS In 1997, the Korean Breast Cancer Society collected the data of new breast cancer patients who were treated at 35 university hospitals and 16 general hospitals nationwidely. RESULTS Total patients were 4,168 cases, female of 4,149 (99.5%) and male of 19 (0.5%) cases. Age distribution showed that there were 2 cases (0.05%) in 10~19 years of age, 109 cases (2.6%) in 20~29 years, 878 cases (21.1%) in 30~39 years, 1,504 cases (36.1%) in 40~49 years, 1,090 cases (26.1%) in 50~59 years, 431 cases (10.3%) in 60~69 years, 128 cases (3.1%) in 70~79 years, 25 cases (0.6%) in 80 years or above, 1 case of unknown. A radical mastectomy was performed in 50 cases (1.2%), a modified radical mastectomy in 3,094 cases (74.2%), a simple mastectomy m 114 cases (2.7%), a breast conserving surgery in 740 cases (17.8%), segmentectomy or excision in 86 cases (2.1%), biopsy or etc.
in 81 cases (1.9%), and unkown in 3 cases (0.1%). According to the TNM staging system, there were 188 (4.8%) with stage 0, 849 (21.7%) with stage I, 1,344 (34.3%) with stage IIA, 810 (20.7%) with stage IIB, 415 (10.6%) with stage IIIA, 106 (2.7%) with stage IIIB, and 83 (2.1%) with stage IV. CONCLUSION We, all the members of the Korean Breast Cancer Society believe that it is very important to join the nationwide collection of Korean breast cancer data since 1996 when the first nationwide baseline data was reported, and we think that we have been accomplishing the purposes of study, which is to report the yearly natiowide data of Korean breast cancer, and to compare our data with those of other countries.
We evaluated 53 patients who underwent Whipple operation at surgical department, Dong San Medical Center, Keimyung University during 5 years from Jan. 1989 to Dec, 1993. The results were as follows: The most prevalent age group was 50(20 cases) and male to female ratio was 2:l. Among 53 cases, 16 were ampulla of Vater cancers, followed by distal CBD cancer (12 cases), pancreatic head cancer(l 1 cases), duodenal cancer (7 cases), and others (7 cases). Fre- quent symptoms and physical findings were jaundice(66%), RUQ abdominal pain(64%), weight loss(50%), general weakness, fever, chill and indigestion. Abnormal laboratory findings were shown in bilirubin (36 cases), alkaline phosphatase (35 cases), CA 19-9 (21 cases), and CEA(12 cases), ERCP was superior than any other radiologic diagnostic tools such as C-T, U-S, PTC and UGI. Frequent postoperative complications were wound infection(8 cases), intraabdominal abscess (5 cases), anastomotic site leakage(4 cases), pleural e#ffusion, pneumonia (4 cases) and others. There was one case of postoperative mortality due to respiratory failure caused by massive transfusion for control of postoperative bleeding. Histologically pathologic invasion from distal CBD to pancreas occured in 9 cases, from ampulla of Vater to distal CBD in 5 cases, from pancreatic head to distal CBD in 3 cases. Survival was much higher in ampulla of Vater cancer (1 year survival 100%, 3 year survival 88%) than that of any other cancers of pancreaticoduodenal region.