Wen-Ying Lee

W.-Y.Lee, C.-Y.Chu, I.-C.Liao, and M.-H.Tseng, “Liquid-Based Cytology of SMARCA4-Deficient Undifferentiated Tumor: A Case Report,” Diagnostic Cytopathology (2026): 1–5, https://doi.org/10.1002/dc.70113. Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement Data sharing not applicable to this article as no datasets were generated or analysed during the current study.

1 Introduction Perivascular epithelioid cell tumor (PEComa) is a family of rare mesenchymal neoplasms composed of perivascular epithelioid to spindle cells that typically coexpress smooth muscle and melanocytic markers [1, 2]. A distinct subset of PEComa is characterized by rearrangements involving transcription factor E3 (TFE3), usually occurring in younger patients and lacking association with tuberous sclerosis complex [3-5].

Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement Data sharing not applicable to this article as no datasets were generated or analysed during the current study. References 1, , , and , “A Brief Chronicle of Cytology: From Janssen to Papanicolaou and Beyond,” Diagnostic Cytopathology 41, no. 6 (2013): 555–564, https://doi.org/10.1002/dc.22887. 2 and , “Foundation of Diagnostic Cytology,” Annals of Clinical and Laboratory Science 38, no. 3 (2008): 296–299.