Malignant triton tumor diagnosed on fine needle aspiration cytology

Abstract

The other type of cells was large pleomorphic cells mostly clinging to the pseudopapillaroid clusters and lying discretely [Figure 1]a. These cells were oval to pear shaped with eccentrically placed nuclei and moderate to abundant cytoplasm [Figure 1]b.{Figure 1} Subsequently, immunocytochemistry was performed on the Pap-stained smears without destaining with a panel of S100, desmin, MyoD1, myogenin, cytokeratin, smooth muscle actin, and HMB45. On the basis of cytological diagnosis, the patient underwent wide local excision of the tumor with left hemimandibulectomy and modified radical neck resection [Figure 1]e. On histopathological examination, the tumor was composed of spindle cells with good number of pleomorphic cells having eosinophilic cytoplasm [Figure 1]f. Some of these cells showed cross striations. Mitosis was brisk with 10/10 high-power field. [...]the diagnosis of MTT was confirmed.