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  • Title: Sellar Cholesterol Granuloma Mimicking Cystic Sellar Lesions: A Report of Three Cases and Literature Review.
    Author: Pilonieta M, Martin M, Revuelta Barbero JM, Hardesty DA, Carrau RL, Otto BA, Otero J, Ghalib L, Prevedello DM.
    Journal: World Neurosurg; 2020 Dec; 144():250-255. PubMed ID: 32781144.
    Abstract:
    BACKGROUND: Cystic lesions in the sellar region include a variety of entities, such as craniopharyngioma, Rathke cleft cyst (RCC), intrasellar arachnoid cyst, cystic pituitary adenomas, cholesterol granulomas (CGs), and xanthogranulomas (XGs). The distinction among them remains a preoperative challenge due to similarities in their clinical and radiologic findings. CASE DESCRIPTION: We describe 3 cases with cystic sellar lesions. The first patient is a woman who presented with headache and hormonal disturbances, including high levels of prolactin, with a sellar and suprasellar cystic lesion discovered on magnetic resonance imaging. She was initially treated with dopamine agonists with normalization of prolactin levels but no changes on the size of the lesion. She underwent an endoscopic endonasal resection and the histology resulted in a CG/XG. The second patient is a woman who consulted for an incidentally discovered sellar cyst. During the follow-up, the lesion demonstrated enlargement with compression of the optic chiasm. With a preoperative diagnosis of RCC, the lesion was removed through an endoscopic endonasal transsellar approach. Final pathologic diagnosis was consistent with CG/XG. The third case was that of a man who presented with refractory headaches and vision loss, with a sellar/suprasellar cystic lesion on magnetic resonance imaging. He underwent endoscopic endonasal transsellar surgery for resection of what preoperatively was thought to be a giant RCC; final pathology again was consistent with CG/XG. CONCLUSIONS: CG/XG is an uncommon pathology with unspecific clinical and radiologic features. However, this pathology should be considered in the differential diagnosis of mixed cystic/solid lesions in the sellar region.
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