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Broad fibrovascular cores may not be an exclusively benign feature in papillary lesions of the breast: a cautionary note.
MedLine Citation:
PMID:  24062357     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: A prominent fibrovascular stromal core is one of the widely accepted histological features of breast papillomas, but some papillary carcinomas also show such broad fibrovascular cores, leading to confusion in diagnosis, particularly in needle biopsy specimens. We investigated the histological characteristics of papillary lesions, focusing on broad fibrovascular cores and their relationship with the architectural patterns.
METHODS: Among 185 cases of needle biopsies of papillomas and papillary carcinomas, the number of cases with broad fibrovascular cores in each group was compared. The broad fibrovascular core density in the subsequently resected specimens was evaluated and compared between papillary predominant pattern (papillary structures >80% of tumours) and mixed pattern (papillary, solid, cribriform and others) within the lesions.
RESULTS: Significantly more papillary carcinomas than papillomas and B3 atypical papillary lesions had broad fibrovascular cores (p=0.0091 and p=0.0164, respectively). The papillary predominant pattern was more prominent in carcinomas than in papillomas in the needle biopsies (p=0.048) and showed the same tendency in the resections (p=0.058). The broad fibrovascular core density was significantly lower in the 18 papillomas than in the 37 papillary carcinomas (p=0.0079) and was not significantly different between the papillary predominant and mixed patterns in carcinomas and papillomas.
CONCLUSIONS: Broad fibrovascular cores in mammary papillary lesions are not specific for papillomas, as they are also present focally in papillary carcinomas. As the frequency of papillary carcinoma with broad fibrovascular cores is relatively high, caution in diagnosis has to be exercised, especially in needle biopsy specimens.
Authors:
Rin Yamaguchi; Maki Tanaka; Gary M Tse; Miki Yamaguchi; Hiroshi Terasaki; Yoriko Nomura; Miki Takenaka; Yoshiki Naito; Jun Akiba; Hirohisa Yano
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-9-23
Journal Detail:
Title:  Journal of clinical pathology     Volume:  -     ISSN:  1472-4146     ISO Abbreviation:  J. Clin. Pathol.     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-9-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376601     Medline TA:  J Clin Pathol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Pathology and Laboratory Medicine, Kurume University Medical Center, Kurume, Japan.
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