Hansemann

Hansemann, David (David Hansemann, 1859-1920), one of the major German pathologists. Being a close student of Virchow, Hansemann for 9 years worked as an assistant to the latter at the Berlin Institute of Pathology, and later took the position of professor-prosector at the Friedrichshain Hospital in Berlin. To H. belong more than 200 scientific works, of which the most well-known are those relating to malignant tumors. Among other things, Hansemann introduced the term aplasia into pathology (see); he was the first to thoroughly study pathological mitoses of tumor cells. Among H.'s works relating to other areas, important are his studies on changes in the pancreas in diabetes, on rachitic changes in the skull, on the pathological anatomy of Basedow's disease, and on the formation and resorption of gallstones. Among H.'s books, the most popular is his 'Diagnosis of Malignant Tumors'. Interesting are his atlas-monographs concerning the study of the brains of great men—Helmholtz, Mommsen, Bruns, and Menczel. The last 2½ years of his life, Hansemann served as editor of 'Virchows Archiv f. pathologische Anatomie u. Physiologie'.