Histologic examination of the biopsy specimen revealed a large ulcerated lesion with a dense inflammatory infiltrate. A predominantly neutrophilic component was present in superficial areas, whereas mostly small, nonatypical, mononuclear lymphocytic cells were found in the deep periadnexal component. No significant numbers of plasma cells or macrophages were present. No evidence of vasculitis or neoplastic growth was found (Figure 2).
Ulceronecrotic Nasoparanasal Lesion—Diagnosis. Arch Dermatol. 2007;143(5):653-658. doi:10.1001/archderm.143.5.653-h