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Multicenter Study
. 2022 Jun 15;35(1):ivac047.
doi: 10.1093/icvts/ivac047.

Pathological and clinical features of multiple cancers and lung adenocarcinoma: a multicentre study

Affiliations
Multicenter Study

Pathological and clinical features of multiple cancers and lung adenocarcinoma: a multicentre study

Pietro Bertoglio et al. Interact Cardiovasc Thorac Surg. .

Abstract

Objectives: Lung cancer is increasingly diagnosed as a second cancer. Our goal was to analyse the characteristics and outcomes of early-stage resected lung adenocarcinomas in patients with previous cancers (PC) and correlations with adenocarcinoma subtypes.

Methods: We retrospectively reviewed data of patients radically operated on for stage I-II lung adenocarcinoma in 9 thoracic surgery departments between 2014 and 2017. Overall survival (OS) and time to disease relapse were evaluated between subgroups.

Results: We included 700 consecutive patients. PC were present in 260 (37.1%). Breast adenocarcinoma, lung cancer and prostate cancer were the most frequent (21.5%, 11.5% and 11.2%, respectively). No significant differences in OS were observed between the PC and non-PC groups (P = 0.378), with 31 and 75 deaths, respectively. Patients with PC had smaller tumours and were more likely to receive sublobar resection and to be operated on with a minimally invasive approach. Previous gastric cancer (P = 0.042) and synchronous PC (when diagnosed up to 6 months before lung adenocarcinoma; P = 0.044) were related, with a worse OS. Colon and breast adenocarcinomas and melanomas were significantly related to a lower incidence of high grade (solid or micropapillary, P = 0.0039, P = 0.005 and P = 0.028 respectively), whereas patients affected by a previous lymphoma had a higher incidence of a micropapillary pattern (P = 0.008).

Conclusions: In patients with PC, we found smaller tumours more frequently treated with minimally invasive techniques and sublobar resection, probably due to a more careful follow-up. The impact on survival is not uniform and predictable; however, breast and colon cancers and melanoma showed a lower incidence of solid or micropapillary patterns whereas patients with lymphomas had a higher incidence of a micropapillary pattern.

Keywords: Adenocarcinoma subtype; Lung adenocarcinoma; Lung cancer; Multiple cancers; Thoracic surgery.

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Figures

Figure 1:
Figure 1:
Overall survival of patients with and without previous cancers affected by lung adenocarcinoma.
Figure 2:
Figure 2:
Overall survival of patients with synchronous or metachronous multiple cancers.
None

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