PMC8677671_01
Medical history of the patient. (A) October 2016 until December 2019. (B) April 2020 until December 2020.
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Here, we present a case of a 20-year-old female with refractory multilocular PTSMT ( Figure 1 ).
Macroscopic and microscopic images of posttransplant smooth muscle tumor (PTSMT). (A) Colonoscopic image of PTSMT depicted as a nodular mucosal tumor with erythematous margin and a mucous cap. (B-F) Histopathological stainings from the tumor depicted in panel (A), x100 magnification applied. Staining: (B) hematoxylin and eosin stain; (C) caldesmon stain; (D) Ki-67 stain; (E) Epstein-Barr virus-encoded small RNAs (EBER) in situ hybridization; (F) Epstein-Barr virus nuclear antigen 2 (EBNA-2) stain.
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Furthermore, positivity for EBER was detected by in situ hybridization ( Figures 2B-F ).