Figure 1.

Magnetic resonance imaging (MRI) and computed tomography (CT) scan results of the malignant triton tumor (MTT) cases in our hospital. (A) MRI results revealed that the mass had long or isodense T1 signals. (B, C) The mass demonstrated long T2 signals. In certain images, there are ring or linear forms, as a type of isolation strip, with isodense T2 signals, which are likely due to necrosis and hemorrhage in the mass. (D) MRI revealed isodense T1 signals in the tonsil MTT. (E) Gadolinium-diethylenetriamine pentaacetic acid-enhanced MRI indicated an enhancement of the mass with a distinct lobulated margin in the parapharyngeal space MTT. (F) Enhanced spiral CT scanning of the parapharyngeal space MTT.