Case report: A challenging case of mixed-variant myofibroblastoma with complex imaging and pathological diagnosis - Kawasaki, Tomonori; Ichikawa, Jiro; Kanno, Satoshi; Onohara, Kojiro; Wako, Masanori; Tatsuno, Rikito; Ochiai, Satoshi; Watanabe, Takuya; Torigoe, Tomoaki (Frontiers in Oncology, 2024)