Staging Strategies and Their Association With Prognosis and Therapy in Lung Cancer With Cystic Airspaces

The goal of this observational study is to determine the most accurate tumor size measurement method for T-staging and prognostic assessment in lung cancer with cystic airspaces (LCCA). The main questions it aims to answer are: * What is the optimal T-staging approach for accurately classifying lung cancer with cystic airspaces （LCCA) and predicting patient outcomes? * How do imaging features of cystic lesions correlate with their pathological characteristics? * What is the relationship between imaging features of cystic airspace-associated lesions and patient prognosis? * Can optimizing the T-staging method improve clinical decision-making in patients with LCCA?

NCT Number	NCT07066813
Lead Sponsor	Central South University
Conditions	Lung Cancer Associated With Cystic Airspaces
Enrollment	500 participants
Start Date	2025-06-01
Primary Completion	2026-05-31 (estimated)
Study Completion	2026-07-01 (estimated)
Updated on ClinicalTrials.gov	2026-07-08