PMC7502992_01
Otoscopy. Blue retrotympanic mass that involves external auditory channel.
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Otoscopy showed a bluish, non-pulsing, retro-tympanic mass that caused a bulging (Figure 1).
Intraoperative view after the removing of tympano mastoid cholesterol granuloma (TMCG).
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Tympano-mastoid canal wall up surgery was performed under general anaesthesia in order to remove the presumed CG (Figure 2).
Low power magnification of the bioptic sample shows a typical cholesterol granuloma. Bar: 200 microns.
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Histological examination of the bioptic sample revealed the typical features of cholesterol granuloma (Figure 3).
High power magnification of the bioptic sample highlights the clefts of cholesterol crystals (asterisks) resulting from the dissolution of cholesterol during tissue processing associated with foreign body multinucleated giant cells (arrows) and haemorrhage. Bar: 100 microns.
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