Prognostic value of visceral pleural invasion in pure-solid and part-solid lung cancer patients
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ORIGINAL ARTICLE
Prognostic value of visceral pleural invasion in pure‑solid and part‑solid lung cancer patients Satoru Okada1 · Aritoshi Hattori2 · Takeshi Matsunaga2 · Kazuya Takamochi2 · Shiaki Oh2 · Masayoshi Inoue1 · Kenji Suzuki2 Received: 25 February 2020 / Accepted: 20 August 2020 © The Japanese Association for Thoracic Surgery 2020
Abstract Objective Visceral pleural invasion (VPI) indicates poor prognosis in non-small cell lung cancer (NSCLC), and is defined as a T2 descriptor for T1-sized tumor. However, whether its prognostic impact differs between pure-solid and part-solid tumors as preoperative diagnostic imaging is controversial. We aimed to elucidate the prognostic difference of VPI in cT1-sized NSCLC according to radiological tumor type (pure-solid or part-solid). Methods We retrospectively reviewed 498 NSCLC patients who underwent complete anatomical lung resection between 2009 and 2014. Patients with node-negative, cT1-sized (consolidation size, ≤ 3 cm) NSCLCs were included. VPI included pathological PL1 and PL2. The prognostic impact of VPI according to radiological tumor type was assessed using multivariate Cox regression analyses. Results We evaluated 227 pure-solid and 271 part-solid tumors; median follow-up period was 57 months. VPI was found in 40 (17.6%) and 15 (5.5%) patients with pure-solid and part-solid tumors, respectively (p
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