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Chinese Journal of Hepatic Surgery(Electronic Edition) ›› 2018, Vol. 07 ›› Issue (05): 396-401. doi: 10.3877/cma.j.issn.2095-3232.2018.05.012

Special Issue:

• Clinical Researches • Previous Articles     Next Articles

Clinical characteristics and prognostic analysis of cholangiocarcinoma-related multiple primary malignancies

Yongfu Xiong1, Gang Yang1, Qiang Li1, Jian Xu1, Jingdong Li1,()   

  1. 1. Department of Hepatobiliary Surgery, the Affiliated Hospital of Northern Sichuan Medical College, Nanchong 637000, China
  • Received:2018-06-20 Online:2018-10-10 Published:2018-10-10
  • Contact: Jingdong Li
  • About author:
    Corresponding author: Li Jingdong, Email:

Abstract:

Objective

To investigate the clinicopathological characteristics, location of tumors, interval time of new-onset tumor, and their relationship with the onset risk and prognosis of patients with cholangiocarcinoma-related multiple primary malignancies (CMPMs).

Methods

Clinicopathological and follow-up data of 38 550 patients diagnosed with cholangiocarcinoma from the Surveillance, Epidemiology and End Results (SEER) database of National Cancer Institute between 1973 and 2014 were collected. The standardized incidence rate (SIR) of CMPMs and the 95%CI were calculated. The incidence of different tumors, different age and different diagnostic interval time after first-onset cholangiocarcinoma were compared with SIR. The impact of different interval time of CMPMs upon the overall survival was compared.

Results

A total of 38 082 cases were diagnosed with single cholangiocarcinoma and 468 cases were diagnosed with CMPMs, with a incidence of 1.2%. The onset risk of small intestinal, pancreas, liver, and biliary tract tumors after cholangiocarcinoma was significantly higher than that in normal population (SIR=5.97, 1.58, 2.28; 95%CI: 3.09-10.44, 1.01-2.35, 1.49-3.37; P<0.05). Patients aged 30-49 and 50-59 years had a higher risk of developing other tumors, compared with the normal population (SIR=4.00, 1.67; 95%CI: 2.51-6.06, 1.25-3.19; P<0.05). At 5-10 years after surgery, the risk of other tumors in patients with cholangiocarcinoma was significantly higher than that of normal population (SIR=1.30; 95%CI: 1.08-1.55; P<0.05). The survival time of patients with cholangiocarcinoma was prolonged along with the increase of interval time of onsets of CMPMs. In particular, the overall survival of patients with CMPMs at postoperative 5 years was significantly better.

Conclusions

The diagnostic rate of CMPMs is low and the risk of missed diagnosis is high. For patients diagnosed with cholangiocarcinoma between the age of 30-59 years and have underwent surgery for over 5 years, enhance the follow-up of gastrointestinal tumors may contribute to identifying CMPMs. The survival time is prolonged along with the increase of interval time of new-onset CMPMs.

Key words: Bile duct neoplasms, Multiple primary malignancies, Prognosis

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