Massive Facial Presentation of Dermatofibrosarcoma Protuberans

Figure 2

Axial MRI of the head showing a large lobulated mass centered at the right preauricular region. (a) The lesion appearing hypointense on T1-weighted imaging, (b) moderately hyperintense on T2-weighted imaging, and (c) showing marked homogeneous contrast enhancement with peripheral and intratumoral zones of necrosis (white arrows) on T1-weighted imaging after gadolinium administration. The masseter muscle and perioral muscles are not separately visible due to deep muscular invasion. There is also deep invasion of the tumour behind the right mandibular ramus in the masticator space.

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