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Basal cell carcinoma with myoepithelial differentiation: a distinct plasmacytoid cell variant with hyaline inclusions.
MedLine Citation:
PMID:  20602658     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We describe a 74-year-old man presenting with a 10-year history of an asymptomatic, skin-colored hard plaque on his left cheek. Microscopy revealed well-demarcated tumor with peripheral palisading and peritumoral clefting in the dermis. The tumor included many plasmacytoid cells with cytoplasmic hyaline inclusions and eccentric nuclei. Electron microscopic examination showed that hyaline inclusions consisted of aggregates of filaments. Immunoperoxidase staining showed diffuse cytoplasmic expression of 34bE12, smooth muscle actin, calponin and p63. We diagnosed the patient with basal cell carcinoma (BCC) with myoepithelial differentiation and treated him with excision. Eight months postoperatively, the patient remained well with no recurrence. This distinct variant of BCC with myoepithelial differentiation, showing cytoplasmic hyaline inclusions and eccentric nuclei, has previously been confusingly termed 'signet-ring cell BCC'. However, these plasmacytoid cells differ from signet-ring cells with vacuolated cytoplasm. To avoid confusion, we suggest the designation 'BCC with myoepithelial differentiation'. Na SY, Choi Y-D, Choi C, Kim S-J, Won YH, Yun SJ. Basal cell carcinoma with myoepithelial differentiation: a distinct plasmacytoid cell variant with hyaline inclusions.
Authors:
So Young Na; You-Duk Choi; Chan Choi; Seong-Jin Kim; Young Ho Won; Sook Jung Yun
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cutaneous pathology     Volume:  38     ISSN:  1600-0560     ISO Abbreviation:  J. Cutan. Pathol.     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-03-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0425124     Medline TA:  J Cutan Pathol     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  448-52     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 John Wiley & Sons A/S.
Affiliation:
Department of Dermatology, Gil Medical Center, Gachon University of Medicine and Science, Incheon, South Korea Department of Pathology Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea.
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