An Update on the Classification of Lung and Pleural Tumors

The World Health Organization (WHO) recently published new guidelines for the diagnosis and classification of lung pleural tumors. This review provides a concise overview key updates, including discussions histologic features recommended terminology small diagnostic samples, revised grading system adenocarcinoma with inclusion complex glandular filigree micropapillary patterns, molecular large cell neuroendocrine carcinoma. Additionally, rare neoplasms such as bronchiolar adenoma/ciliated muconodular papillary tumor, SMARCA4-deficient undifferentiated thoracic primary pulmonary hyalinizing clear carcinoma are described in terms their approaches features. also includes discussion algorithm malignant epithelioid mesothelioma.