Clinicopathological Features and Pathogenesis of Thymoma Complicated with Alopecia Areata: A Multicenter, Matched Case Analysis

August 2025 in “ Cancers ”

Xin Du, Xuehan Gao, Jian Cui, Xintao Yu, Cheng Huang, Yeye Chen, Chao Guo, Ye Zhang, Chao Gao, Xiayao Diao, Lei Yu, Shanqing Li

alopecia areata thymoma CD8+ T lymphocytes autoimmune diseases cytotoxic T-cell AA

Studysummary This article hypothesizes that thymoma with aplastic anemia may result from abnormal autoimmune CD8<sup>+</sup> T lymphocytes produced by the thymoma, potentially leading to other cytotoxic T-cell-mediated autoimmune diseases.

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This study analyzed 428 thymoma patients, including 9 with alopecia areata (AA), and found that those with AA had a higher occurrence of myasthenia gravis and other paraneoplastic syndromes. All AA patients exhibited an inverted CD4+/CD8+ T lymphocyte ratio, suggesting abnormal CD8+ T lymphocytes may play a role in the pathogenesis of thymoma with AA. Surgical intervention improved AA symptoms in 8 out of 9 patients, indicating its effectiveness. The study also noted a higher proportion of Stage IV tumors in thymoma patients with AA, suggesting a link between CD8+ T lymphocytes and tumor progression. Further research is needed to understand the pathophysiological mechanisms and improve treatment strategies.

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research Alopecia Areata: An Update on Etiopathogenesis, Diagnosis, and Management

290 citations , August 2021 in “Clinical Reviews in Allergy & Immunology”

JAK inhibitors show promise for treating alopecia areata, but more research is needed.

research Alopecia Areata: Overview and Insights from January 2018

290 citations , December 2017 in “Journal of The American Academy of Dermatology”

This article reviews the epidemiology, clinical evaluation, and pathogenesis of alopecia areata and highlights recent advancements, but it does not report new clinical findings.

research Overlooked Non-Motor Symptoms in Myasthenia Gravis

49 citations , November 2012 in “Journal of neurology, neurosurgery and psychiatry”

This review discusses non-motor symptoms in patients with thymoma-associated myasthenia gravis, suggesting these symptoms, which can be treatable, often go overlooked despite affecting multiple organs.

research Multiple Paraneoplastic Syndromes: Myasthenia Gravis, Vitiligo, Alopecia Areata, and Oral Lichen Planus Associated with Thymoma

31 citations , June 2011 in “Journal of the neurological sciences”

In this case report, a patient with thymoma was observed to have four co-occurring paraneoplastic autoimmune disorders that improved after thymectomy, suggesting a possible link between thymoma and these conditions.