Sublobar resection for adenocarcinoma in situ and minimally invasive adenocarcinoma diagnosed by intraoperative frozen section (ECTOP-1019): a study protocol of prospective, single-arm, multicenter, phase III study

Our previous retrospective study revealed that sublobar resection was appropriate for adenocarcinoma in situ (AIS) and minimally invasive adenocarcinoma (MIA) diagnosed by intraoperative frozen section (FS). However, high-level evidence-based medical data confirming this treatment are still lacking. The aim of the ongoing study is to confirm the efficacy and safety of sublobar resection for AIS and MIA diagnosed by FS.