Pediatric NCOA3‐rearranged low‐grade fibroblastic tumor with nuclear beta‐catenin immunoreactivity

Abstract

To the EditorWe read with great interest the recent article by Bakhshwin et al., which described five adult patients with low-grade spindle cell fibroblastic neoplasms with recurrent rearrangements of NCOA2 or NCOA3 (nuclear factor co-receptor) genes. 1 We share our recent experience of a low-grade fibroblastic tumor with CTCF:: NCOA3 fusion presenting in a pediatric patient, with a previously undescribed finding of beta-catenin immunohistochemical expression.A 7-year-old previously healthy female presented with a left lat-