ArticleGeneral thoracic and cardiovascular surgery cases2024
A report on five cases of cholesterol granulomas in the thymus.
Article in General thoracic and cardiovascular surgery cases, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Acute mediastinitis, mediastinal granuloma, and fibrosing mediastinitis: a narrative review.Mediastinum (Hong Kong, China) · 2026Review
- Primary Anterior Mediastinal Cholesterol Granuloma: A Rare Case in a Young Woman and Literature Review.Current medical imaging · 2025Article
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5 authors.
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Abstract
backgroundCholesterol granuloma (CG) is a benign entity characterized by the presence of cholesterol crystals and foreign body giant cells. This condition can be attributed to cholesterol crystals that are deposited in the tissues and react with foreign body giant cells, resulting in granuloma formation. Lesions commonly develop in the otolaryngeal region, such as the middle ear. However, crystals rarely form in the thymus, accounting for 1% of all mediastinal tumors. Herein, we present five cases of mediastinal CG. CASE PRESENTATION: The patients were aged 49-61 (mean, 55.4) years. Among them, three were men and two women. One patient had fever, and four patients were asymptomatic. The patients' lesions were detected during follow-up of other diseases or medical examinations showing the presence of abnormal chest shadows. The patients did not have a history of trauma or surgery. All lesions were located within the thymus gland. Three patients presented with multifocal lesions and two with a single lesion. Four patients had contrast effect on computed tomography scan. Four patients had abnormal fluorodeoxyglucose accumulation (mean maximum standardized uptake value, 4.67) on positron emission tomography-computed tomography. Four patients underwent complete surgical resection. The size of the resected lesions ranged from 1.8 to 5.1 (mean, 3.24) cm. Histologically, all patients presented with small nodules with cholesterol clefts and foreign body giant cells and histiocyte infiltration within the thymic tissue. The postoperative course was excellent. None of the patients who underwent complete resection presented with recurrence. Moreover, the patient who underwent partial resection did not have lesion enlargement.
conclusionsCG in the thymus is clinically challenging to differentiate from malignant lesions, and histologic diagnosis via surgical resection is required.
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