Novel Histologic Classification of Small Tumor Cell Nests for Lung Adenocarcinoma With Prognostic and Etiological Significance: Small Solid Nests and Pure Micropapillary Nests.

Abstract excerpt

Small tumor cell nests such as micropapillary nests are histologic poor prognostic markers for adenocarcinomas of various organs, including the lung. However, for the lung, the association of micropapillary patterns with smoking is controversial, which may be because of a vague definition of micropapillary patterns. This study clarifies the implications of small tumor cell nests by introducing a new dichotomic...

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