Controversies on Lung Cancers Manifesting As Part-solid Nodules

Overview

Journal Eur Radiol

Specialty Radiology

Date 2017 Aug 25

PMID 28835992

Citations 26

Authors

Rowena Yip

Kunwei Li

Li Liu

Dongming Xu

Kathleen Tam

David F Yankelevitz

Emanuela Taioli

Betsy Becker

Claudia I Henschke

Affiliations

Soon will be listed here.

Abstract

Purpose: Summarise survival of patients with resected lung cancers manifesting as part-solid nodules (PSNs).

Methods: PubMed/MEDLINE and EMBASE databases were searched for all studies/clinical trials on CT-detected lung cancer in English before 21 December 2015 to identify surgically resected lung cancers manifesting as PSNs. Outcome measures were lung cancer-specific survival (LCS), overall survival (OS), or disease-free survival (DFS). All PSNs were classified by the percentage of solid component to the entire nodule diameter into category PSNs <80% or category PSNs ≥80%.

Results: Twenty studies reported on PSNs <80%: 7 reported DFS and 2 OS of 100%, 6 DFS 96.3-98.7%, and 11 OS 94.7-98.9% (median DFS 100% and OS 97.5%). Twenty-seven studies reported on PSNs ≥80%: 1 DFS and 2 OS of 100%, 19 DFS 48.0%-98.0% (median 82.6%), and 16 reported OS 43.0%-98.0% (median DFS 82.6%, OS 85.5%). Both DFS and OS were always higher for PSNs <80%.

Conclusion: A clear definition of the upper limit of solid component of a PSN is needed to avoid misclassification because cell-types and outcomes are different for PSN and solid nodules. The workup should be based on the size of the solid component.

Key Points: • Lung cancers manifesting as PSNs are slow growing with high cure rates. • Upper limits of the solid component are important for correct interpretation. • Consensus definition is important for the management of PSNs. • Median disease-free-survival (DFS) increased with decreasing size of the nodule.

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