Sialadenoma Papilliferum of the Bronchus: An Unrecognized Bronchial Counterpart of the Salivary Gland Tumor With Frequent BRAF V600E Mutations.
Adenoma
/ enzymology
Aged
Biomarkers, Tumor
/ analysis
Biopsy
Bronchial Neoplasms
/ enzymology
DNA Mutational Analysis
Diagnosis, Differential
Female
Humans
Immunohistochemistry
Male
Middle Aged
Mutation
Predictive Value of Tests
Proto-Oncogene Proteins B-raf
/ genetics
Salivary Gland Neoplasms
/ enzymology
Treatment Outcome
Journal
The American journal of surgical pathology
ISSN: 1532-0979
Titre abrégé: Am J Surg Pathol
Pays: United States
ID NLM: 7707904
Informations de publication
Date de publication:
01 05 2021
01 05 2021
Historique:
pubmed:
15
1
2021
medline:
11
5
2021
entrez:
14
1
2021
Statut:
ppublish
Résumé
Sialadenoma papilliferum (SP) is a rare benign tumor of the salivary glands, and only 3 unequivocal cases of SP arising in the bronchus have been reported. We herein describe the histomorphologic and molecular features of 4 bronchial SP cases and discuss the differential diagnosis of this entity and the relationship with its clinicopathologic mimics, in particular, glandular papilloma and mixed squamous cell and glandular papilloma (GP/MP). We encountered 2 male and 2 female patients with bronchial SP (mean: 66.8 y old). All 4 tumors arose in the central bronchus and were characterized by a combination of surface exophytic endobronchial papillary proliferation and a submucosal multicystic component with complex architecture. The neoplastic epithelium consisted predominantly of nonciliated stratified columnar cells with ciliated, squamous, and mucinous cells present focally. While 2 tumors (50%) harbored a BRAF V600E mutation by molecular and immunohistochemical analysis, similar to GP/MP, no KRAS, HRAS, AKT1, or PIK3CA mutations were detected in any of the cases. Two patients were treated with limited resection, while 2 patients underwent lobectomy based on the diagnosis of adenocarcinoma or possible squamous cell carcinoma in situ in the preoperative biopsy. All survived without recurrence or metastasis for 23 to 122 months after treatment. SP can develop in the central bronchus as the bronchial counterpart of the salivary gland tumor and should be considered in the differential diagnosis of endobronchial tumors. In addition, some histologic resemblance and frequent BRAF V600E mutation raise the possibility of SP and GP/MP being on the same disease spectrum.
Identifiants
pubmed: 33443864
doi: 10.1097/PAS.0000000000001657
pii: 00000478-202105000-00007
pmc: PMC8035241
mid: NIHMS1657563
doi:
Substances chimiques
Biomarkers, Tumor
0
BRAF protein, human
EC 2.7.11.1
Proto-Oncogene Proteins B-raf
EC 2.7.11.1
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
662-671Subventions
Organisme : NCI NIH HHS
ID : P01 CA240239
Pays : United States
Informations de copyright
Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
Conflicts of Interest and Source of Funding: The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.
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