Fig. 2From: Histopathologic features from preoperative biopsies to predict spread through air spaces in early-stage lung adenocarcinoma: a retrospective studyHistological imaging in patients with tumor spread through air spaces (STAS). (A) Photomicrograph image showing STAS in a lung adenocarcinoma specimen with STAS in surgical specimens. (B and C) Photomicrograph images showing micropapillary/solid histologic subtypes of lung adenocarcinoma in PTNB specimens. (D) Photomicrograph image showing necrotic/tumor debris in a lung adenocarcinoma with STASBack to article page