[Expression of intermediate filaments in cutaneous cylindroma]

Using different monoclonal anti-cytokeratin antibodies (broad spectrum, cytokeratin 7, 8, 18, 19) and the antibody A55-A/A9 until now characterized only by immunohistology the staining of ductal structures and some cells within the lobulae of dermal cylindromata was demonstrated. In regard to the cytokeratin polypeptide patterns of the adnexes in uninvolved skin an exact histogenetic correlation by our findings is not possible, but the pattern is consistent with the conception of the glandular origin of the tumours.