Cuimin Chen, Huanwen Wu, Weihua Yin, Xiaoxin Shi, Yang Zhao
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Bronchial salivary gland-type mucinous adenocarcinoma harboring a GNAS mutation: a novel lung cancer entity? A case report.
We report a case of a 65-year-old man with a 1.0-cm mass in the left main bronchus, exhibiting overlapping morphological, immunohistochemical, and genetic features with both pancreatic intraductal papillary mucinous neoplasm (IPMN) with associated invasive carcinoma and salivary gland IPMN. Based on its close proximity to the bronchial submucosal glands and the expression of NKX3.1 (an established immunohistochemical marker for mucinous acinar cells of the minor salivary glands), we propose that the tumor originates from the mucinous acinar cells of the bronchial salivary gland. Therefore, we suggest naming it bronchial salivary gland-type mucinous adenocarcinoma. Interestingly, a GNAS mutation, known as a highly specific marker for pancreatic IPMN, was detected by next-generation sequencing in our case. We believe that this tumor may represent a novel lung cancer entity.
期刊介绍：
Manuscripts of original studies reinforcing the evidence base of modern diagnostic pathology, using immunocytochemical, molecular and ultrastructural techniques, will be welcomed. In addition, papers on critical evaluation of diagnostic criteria but also broadsheets and guidelines with a solid evidence base will be considered. Consideration will also be given to reports of work in other fields relevant to the understanding of human pathology as well as manuscripts on the application of new methods and techniques in pathology. Submission of purely experimental articles is discouraged but manuscripts on experimental work applicable to diagnostic pathology are welcomed. Biomarker studies are welcomed but need to abide by strict rules (e.g. REMARK) of adequate sample size and relevant marker choice. Single marker studies on limited patient series without validated application will as a rule not be considered. Case reports will only be considered when they provide substantial new information with an impact on understanding disease or diagnostic practice.
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