Drainage of a petrous apex cholesterol granuloma through an infracochlear approach

Petrous Apex Cholesterol Granuloma Showing 68Ga-DOTATATE Uptake

“…Red cell degeneration into cholesterol crystals produces a foreign body reaction that leads to the formation of CG. [1][2][3][4] Cholesterol granulomas may show intense 18 F-FDG uptake and might mimic a malignant neoplasm. [5][6][7][8] An additional feature, intense 68 Ga-DOTATATE uptake of CG was not reported in the literature before.…”

“…A chronic obstruction of the aired bony space with lack of ventilation results in absorption of gases, and subsequently induces mucosal edema with the resultant rupture of blood vessels and hemorrhage. Red cell degeneration into cholesterol crystals produces a foreign body reaction that leads to the formation of CG 1–4 . Cholesterol granulomas may show intense 18 F-FDG uptake and might mimic a malignant neoplasm 5–8 .…”