There are many reports of sclerosing hemangioma from the perspective of its histopathologic features, but its cytopathologic characteristics are less well known. In this report we present the case of a patient in which the cytologic features firmly established a definitive diagnosis; surgical intervention was warranted only after the lesion had grown over the course of 7 yr of close observation. The cytologic diagnosis requires the identification of a dual cell population. Both populations of tumor cell nuclei are immunoreactive for thyroid transcription factor-1, but caution is warranted because this marker may be present in other tumors. Recognition of its distinctive cytologic features can lead to proper diagnosis and conservative management.
Copyright 2002 Wiley-Liss, Inc.