Pleomorphic adenoma of the left lacrimal gland recurred and transformed into myoepithelial carcinoma after multiple operations: A case report

Figure 4 The second preoperative magnetic resonance imaging findings. A-H: Magnetic resonance imaging shows multiple masses of T1 weighted imaging (WI) low signals (A-D) and T2WI inhomogeneous high signals (E-H) in the left orbit, bilateral frontal areas, bilateral septal sinuses, pterygoid sinuses, left maxillary sinus, and anterior skull base; I: Slightly lower signals on diffusion WI, and lesion borders were not well defined; J-L: After enhancement, the lesion showed significant heterogeneous enhancement.