Incidence and prognosis of undifferentiated cancers of the digestive system: a population-based cohort study.

ABSTRACT:

Background

Cases of undifferentiated cancers of the digestive system (UCDS) are occasionally encountered in clinical practice; however, no large-scale studies have described their characteristics. This study aimed to investigate the incidence, prognosis, and treatment strategies of UCDS.

Methods

We used the data from the Surveillance, Epidemiology, and End Results database to evaluate clinical characteristics in UCDS patients. A cohort of 1,372 patients was included to estimate UCDS incidence; another cohort of 1,816 patients was followed up until December 31, 2017 to evaluate treatment and prognosis. The incidence, trends, treatments, overall survival, and cause-specific survival were assessed.

Results

The estimated incidence of UCDS was 0.136 per 100,000 people-year

SUBMITTER: Qiu J 

PROVIDER: S-EPMC7859808 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature