Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
1993-4-15
pubmed:abstractText
To investigate the characteristics of interval breast cancer in mass screening, comparisons were made of the following three groups: interval group (21 interval breast cancer cases), mass screening group (87 breast cancer cases detected by mass screening) and outpatient group (266 breast cancer cases diagnosed at outpatient clinics). There were no differences among the three groups in terms of the case distribution by age or obesity, but significant differences in the case distribution according to nodal involvement and tumor size. Histological grading of the malignancy of the primary tumors disclosed that the incidence of breast cancer showing frequent mitoses was high in the interval group compared to the mass screening and outpatient groups. The 7-year cumulative disease-free survival rate was 75.3% in the interval group, 90.0% in the mass screening group and 83.1% in the outpatient group. The mean tumor size of the interval cases at the time of mass screening, back-calculated on the basis of the estimated tumor doubling time, was 1.5 cm in diameter, smaller than that of the mass screening group. It is surmised that interval breast cancer is characterized by marked proliferation of the tumor cells and has a poorer prognosis than the other group cases. These findings might be due to the marked proliferation of interval breast cancer rather than because of cases having been overlooked at the time of the last screening.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0040-8875
pubmed:author
pubmed:issnType
Print
pubmed:volume
39
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
109-16
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
The characteristics of interval breast cancer in mass screening.
pubmed:affiliation
School of Medical Sciences, University of Tokushima, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't