Laryngeal Epstein–Barr Virus-Associated Smooth Muscle Tumor in an Undernourished Child
Smooth muscle tumors associated with Epstein–Barr virus infections (EBV–SMT) of laryngeal origin are exceedingly rare and have been reported in few adult patients, but not in children. This reported case describes a lesion found in the larynx of an 8-year-old Guatemalan undernourished girl. Microscopically, the lesion showed a highly cellular mesenchymal spindle cell tumor, containing frequent lymphocytes. The immunohistochemical analysis revealed positivity for α-smooth muscle actin and h-caldesmon. In addition, most of the tumor cells were positive for EBV by in situ hybridization. To the best of the author’s knowledge, this is the first literature-reported case of laryngeal EBV–SMT occurring in an undernourished child.
KeywordsEpstein–Barr virus infections/pathology Smooth muscle tumor/pathology Pediatric tumors
This work was supported by São Paulo Research Foundation (FAPESP), Grant Number #2015/25905-1.
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Conflict of interest
The authors declare no potential conflicts of interest related to this case report, to this study’s authorship, and/or to its publication.
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