Fig. 4From: HMGA2 immunostaining is a straightforward technique which helps to distinguish pulmonary fat-forming lesions from normal adipose tissue in small biopsies: a retrospective observational study about a series of 13 lung biopsiesExample of an adipose lesion negative for HMGA2 immunostaining (case 6). This image was obtained from biopsies of a bronchial lesion located in the left lower lobe. Hematoxylin and eosin staining (a) and HMGA2 immunostaining counterstained by hematoxylin (b). The lesion is located in the lamina propria and consists of sheets of adipose cells. The nucleus of adipose cells negative for HMGA2 immunostaining. In contrast, some nuclei of superficial epithelial cells were positive. Scale bar 50 μmBack to article page