Table 1 Flat epithelial atypia and co-existing lesions on core biopsy

From: Management of flat epithelial atypia on breast core biopsy may be individualized based on correlation with imaging studies

Total

FEA only

ADH

ALH

ADH & ALH

LCIS

DCIS

Invasive

210

94 (45%)a

60 (29%)

19 (9%)

9 (4%)

2 (1%)

14 (7%)

12 (6%)

  1. Abbreviations: ADH, atypical ductal hyperplasia; ALH, atypical lobular hyperplasia; DCIS, ductal carcinoma in situ; FEA, flat epithelial atypia; Invasive, invasive carcinoma; LCIS, lobular carcinoma in situ.
  2. Two hundred-ten (210) core biopsies with flat epithelial atypia from 201 patients were identified from 2004 to 2013. Of those, 116 contained a higher risk form of atypia or carcinoma and were excluded from further analysis. In the cores with invasive carcinoma, 8 were tubular carcinomas (or tubular features), 3 were low- or intermediate-grade invasive ductal carcinoma, no special type (grades 4/9, 5/9, 6/9), and 1 was microinvasion (less than 1 mm) associated DCIS.
  3. aPercentages rounded to nearest integer.
Back to article page