ESR1 and Langer mesomelic dysplasia: Among patients with LMD, 4 had ductal histology (57.1%), and 3 had lobular (42.9%); 5 had estrogen receptor-positive (ER+), human epidermal growth factor receptor 2 negative (HER2−) disease (71.4%) and 2 had ER+/HER2+ disease (28.6%).