PMC4296946_01
Computed tomography showing a heterogeneous lobulated lesion in the infratemporal region.
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Brain CT showed a heterogeneous lobulated lesion in the left masticator space (infratemporal region), 3 x 3, 5 x 2 cm wide, medial to lateral pterygoid muscle, with erosion of the inferior wall of foramen rotundum (Fig. 1).
Magnetic resonance imaging (MRI) of the lesion with heterogenous content in the inferior region. (A, B) T1-weighted coronal MRI. (C) T1-weighted axial MRI showing invasion of the infratemporal fossa.
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T2-weighted image, gadolinium-enhanced in T1-weighted image (Fig. 2). There were small hyperintense lesions in T1-weighted images in the suprasellar cistern and in the sylvian fissure, suggesting previous dermoid rupture (Fig. 2B).
Intraoperative endoscopic visualization of the dermoid cyst.
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Unexpectedly, hair and sebaceous glands were found inside the cyst capsule (Fig. 3).