International Clinical Trial: Clinicopathological Characteristics and Prognostic Analysis of Thyroid Cancer Combined with Breast Cancer: A Retrospective Study Based on a Single-Center Real-World Cohort and the SEER Database

Geneva, March 31 -- International Clinical Trials Registry received information related to the study (ChiCTR2600120907) titled 'Clinicopathological Characteristics and Prognostic Analysis of Thyroid Cancer Combined with Breast Cancer: A Retrospective Study Based on a Single-Center Real-World Cohort and the SEER Database' on March 22.

Study Type: Observational study

Study Design: Cohort study

Primary Sponsor: Sun Yat-sen Memorial Hospital, Sun Yat-sen University

Condition: thyroid cancer and breast cancer

Intervention: Second primary tumor group:None No second tumor group:None

Recruitment Status: Recruiting

Phase: N/A

Date of First Enrollment: 2026-01-01

Target Sample Size: Second primary tumor group:200;No second tumor grou...