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Table 1 Frequency of subtypes of lobular neoplasia (LN) and mean age of patients

From: Lobular neoplasia: frequency and association with other breast lesions

LN n % Mean age (years) ± SD
ALH 22 26.2 50.2 ± 9.0
DIALH 25 29.8 50.2 ± 9.7
LCIS 29 34.5 51.3 ± 10.6
LCIS pleo 3 3.6 49.3 ± 8.1
IIL 5 6.0 58.2 ± 8.1
Total 84 100.0 52.0 ± 9.7
  1. ALH = atypical lobular hyperplasia; DIALH = ductal involvement by cells of atypical lobular hyperplasia; LCIS = lobular carcinoma in situ; LCIS pleo = pleomorphic LCIS; IIL = indeterminate in situ lesions. There was no difference in mean age among patients with different lesions (p = 0.425); n = number of cases; SD = standard deviation.