Microsecretory Adenocarcinoma of the Ear Canal: Novel Cutaneous Analog of a Salivary Gland Neoplasm.
Journal
The American Journal of dermatopathology
ISSN: 1533-0311
Titre abrégé: Am J Dermatopathol
Pays: United States
ID NLM: 7911005
Informations de publication
Date de publication:
01 Nov 2022
01 Nov 2022
Historique:
pubmed:
5
8
2022
medline:
19
10
2022
entrez:
4
8
2022
Statut:
ppublish
Résumé
Microsecretory adenocarcinoma (MSA) of the salivary gland is a new entity recently added to the World Health Organization Classification of Head and Neck Tumors. This tumor is characterized by a recurrent MEF2C-SS18 translocation. We present a nodular tumor confined to the dermis of the ear canal of a 44-year-old patient, which demonstrated classic histopathologic features and molecular alteration of MSA. Specifically, the tumor was composed of numerous tubules and microcysts filled with abundant basophilic mucinous secretion and associated with a fibromyxoid stroma. The tumor cells were diffusely positive for CK7 and SOX10 and variably positive for S100 and p63. Breakapart fluorescence in situ hybridization for SS18 confirmed rearrangement of this gene. Together, these findings support a primary cutaneous MSA, presumably arising from ceruminous glands of the ear canal. Based on current knowledge of its salivary gland counterpart, cutaneous MSA is expected to be locally invasive but unlikely to recur or metastasize on complete excision.
Identifiants
pubmed: 35925564
doi: 10.1097/DAD.0000000000002270
pii: 00000372-202211000-00015
doi:
Substances chimiques
Biomarkers, Tumor
0
Types de publication
Case Reports
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
855-858Informations de copyright
Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
Références
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