PMC5534267_01
Ultrasonography of the left parotid gland showing a well-defined, homogenic, round, and hypodense mass with a diameter of 2.5 x 2 x 1.9 cm.
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Ultrasonography showed a well-defined, homogenic, round, and hypodense mass with a measured diameter of 2.5 cm (Figure 1).
(a) Coronal MRI scan showing a signal enrichment in T2 weighting in the left parotid gland. (b) T1 weighted axial MRI scan showing a hypointensity of the same structure.
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An MRI allowed a better preoperative evaluation referring to anatomy and dignity (Figures 2(a) and 2(b)). It showed a signal enrichment in T2 weighting (Figure 2(a)) and an intermediate signal in T1 (Figure 2(b)).
The intraoperative impression suggested a benign lesion with a tight capsule without abnormal vascularization.
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Intraoperatively, the tumor had a tight capsule without abnormal vascularization (Figure 3) and it was removed with parts of the adjacent parotid tissue.
Dermoid cyst with stratified epithelium with associated skin appendages like keratin lamellae and sebaceous glands (haematoxylin and eosin staining).
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The wall of the cyst contained fibrocartilaginous tissue with mild lymphocyte infiltration (Figure 4).