1. Allergic hyper-carcinoembryonic antigen syndrome: A syndrome summarized by case series
- Author
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Zhaolin Li, Luna Hong, Yuewei Li, Xiaoling Lin, Ming Chen, Shiyi Bu, Shuwan Xu, Qiaojun Zeng, Yijiao Huang, Lijuan Bian, Jianming Zheng, Boying Gao, Guirong Liu, Wenman He, Xueming Song, Fengzhan Ye, Linjie Huang, Shanping Jiang, Jianting Shi, and Tiantian Tang
- Subjects
Medicine (General) ,R5-920 - Abstract
Allergic respiratory diseases can increase serum carcinoembryonic antigen levels. We report three cases experiencing allergic symptoms that proved refractory to inhaled corticosteroids but exhibited a positive response to long-term treatment with oral corticosteroids. This response was characterized by a synchronous alteration in serum eosinophil counts and carcinoembryonic antigen levels. Immunofluorescence assays indicated localized carcinoembryonic antigen production within eosinophils. In addition, we conducted a systematic review of patients exhibiting similar characteristics on PubMed. After comprehensively reviewing this unique pathophysiological condition, we herein introduced a novel term “Allergic hyper-carcinoembryonic antigen syndrome,” defined by the following criteria: (1) recurrent asthmatic attacks; (2) eosinophilia or pulmonary eosinophilic infiltrations accompanied by elevated serum carcinoembryonic antigen levels; (3) pulmonary lesions determined by imaging or biopsy; (4) exclusion of malignancy and infections; and (5) responsive to systemic corticosteroids. Allergic hyper-carcinoembryonic antigen syndrome suggests systemic corticosteroids should be introduced early when managing allergic patients with both eosinophilia and elevated serum carcinoembryonic antigen levels.
- Published
- 2024
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