Fig. 4From: Disseminated and late metastatic disease from nasal pit leiomyosarcoma after radical surgical resection. Case report of a singular presentation of a rare diseaseHistologic features of the core-needle biopsy. The lesion was constituted of malignant smooth muscle fascicles, as demonstrated by the immunohistochemistry for smooth muscle actin (SMA) and pool cytokeratin (CK, which is shown to have a positive control on the normal lung parenchyma left)Back to article page