CALCA and columnar cell hyperplasia of the breast: At baseline CGRP levels were significantly higher in eCHr patients compared to cCH patients (100.6 ± 36.3 pmol/l vs. 65.9 ± 30.5 pmol/l, p=0.0114), and post-hoc analyses revealed significantly higher CGRP levels in eCHa (88.4 ± 29.1 pmol/l, p<0.0001), eCHr (p<0.0001) and cCH (p=0.0202) compared to controls (44.8 ± 11.4 pmol/l).