Iver Petersen1, Arne Warth2,3. 1. Institute of Pathology, University Hospital Jena, Ziegelmühlenweg 1, 07743, Jena, Germany. iver.petersen@med.uni-jena.de. 2. Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany. 3. Translational Lung Research Center Heidelberg, Member of the German Center for Lung Research, Heidelberg, Germany.
Abstract
INTRODUCTION: Diagnostic methods and algorithms for the diagnosis of pulmonary neoplasms have considerably changed over the recent years. Based on large-scale molecular characterization studies and the development of targeted therapies, precise morphological, immunohistochemical, and molecular pathological tumor subtyping is now of utmost importance for evidence-based treatment decisions. Changes of diagnostic concepts initially referred to biopsies and cytology specimens but are now also transferred to resection specimens. METHODS: This review is focused on recent developments in morphological and immunohistochemical subtyping of pulmonary neoplasms and concepts of tumor progression. It also provides perspectives on relevant changes of diagnostic concepts within the context of the new WHO classification. CONCLUSION: It becomes apparent that a three-step diagnostic concept based on morphology, immunohistochemistry, and molecular pathology is important to meet the requirements of an increasingly more complex, interdisciplinary care of lung cancer patients and to allow for reliable, clinically meaningful tumor diagnoses.
INTRODUCTION: Diagnostic methods and algorithms for the diagnosis of pulmonary neoplasms have considerably changed over the recent years. Based on large-scale molecular characterization studies and the development of targeted therapies, precise morphological, immunohistochemical, and molecular pathological tumor subtyping is now of utmost importance for evidence-based treatment decisions. Changes of diagnostic concepts initially referred to biopsies and cytology specimens but are now also transferred to resection specimens. METHODS: This review is focused on recent developments in morphological and immunohistochemical subtyping of pulmonary neoplasms and concepts of tumor progression. It also provides perspectives on relevant changes of diagnostic concepts within the context of the new WHO classification. CONCLUSION: It becomes apparent that a three-step diagnostic concept based on morphology, immunohistochemistry, and molecular pathology is important to meet the requirements of an increasingly more complex, interdisciplinary care of lung cancerpatients and to allow for reliable, clinically meaningful tumor diagnoses.
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