[Cytological detection of a myeloic metaplasia in punctates of transplanted kidneys and their diagnostic importance (author's transl)].

In 30 patients who had undergone renal transplantations, 45 renal biopsies were carried through for a suspected acute immuno-incompatibility (rejection) during the period from 1974-1975. Of all bioptic material taken swab-preparations were made at the same time, aiming at clarifying the cytomorphological criteria of the acute transplant rejection. In 14 out of 27 cases where an acute transplant rejection was histologically diagnosed, myelocytes and normoblasts were found in the smears. In one out of two chronic cases of transplant rejection the detection of metaplasias was negative. Thus, the detection of myeloic metaplasias in renal punctates is an important criterium for the cytodiagnostics of a transplant rejection crisis.