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Surgery Today
Published in: Surgery Today 8/2016

01-08-2016 | Original Article

The oncological outcomes of segmentectomy in clinical-T1b lung adenocarcinoma with a solid-dominant appearance on thin-section computed tomography

Authors: Aritoshi Hattori, Takeshi Matsunaga, Kazuya Takamochi, Shiaki Oh, Kenji Suzuki

Published in: Surgery Today | Issue 8/2016

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Abstract

Purpose

We investigated the surgical outcomes of clinical-T1b lung adenocarcinomas patients whose tumors had a solid-dominant radiological appearance and who were treated with segmentectomy or lobectomy.

Methods

We examined 154 surgically resected clinical-T1b lung adenocarcinomas with a “solid-dominant” appearance on thin-section computed tomography (CT). The preoperative thin-section CT images of all cases were reviewed. “Solid-dominant” was defined as 0.5≤ consolidation/tumor ratio (CTR) <1.0.

Results

Pathological nodal metastasis, lymphatic invasion, vascular invasion, and pleural invasion were found in 7 (4.5 %), 27 (18 %), 21 (14 %), and 15 (10 %) patients with clinical-T1b solid-dominant lung adenocarcinoma, respectively. Lobectomy and segmentectomy were performed in 123 (80 %) and 31 (20 %) cases, respectively. The 3-year overall survival (OS) and relapse-free survival (RFS) of patients with clinical-T1b solid-dominant lung adenocarcinoma were 95.5 and 92.4 %, respectively. The 3-year RFS and OS did not differ significantly between the patients who underwent lobectomy or segmentectomy (3-year RFS, 92.3 vs. 93.4 %, p = 0.8713; 3-year OS, 95.3 vs. 96.6 %, p = 0.7603). Segmentectomy was not found to be a prognostic factor for RFS (p = 0.8714), or OS (p = 0.7613).

Conclusions

Segmentectomy can achieve acceptable oncological outcomes (both in terms of OS and RFS), which are similar to those achieved with standard lobectomy, in patients with clinical-T1b solid-dominant lung adenocarcinoma.
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Metadata
Title
The oncological outcomes of segmentectomy in clinical-T1b lung adenocarcinoma with a solid-dominant appearance on thin-section computed tomography
Authors
Aritoshi Hattori
Takeshi Matsunaga
Kazuya Takamochi
Shiaki Oh
Kenji Suzuki
Publication date
01-08-2016
Publisher
Springer Japan
Published in
Surgery Today / Issue 8/2016
Print ISSN: 0941-1291
Electronic ISSN: 1436-2813
DOI
https://doi.org/10.1007/s00595-015-1256-6

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