Fetus-in-fetu as a differential diagnosis of fetal abdominal tumors - Lima Júnior, Luiz Sérgio de; Okido, Marcos Masaru; Crott, Gérson Cláudio; Prado, Caio Antonio de Campos; Duarte, Geraldo; Marcolin, Alessandra Cristina (Journal of Clinical & Medical Images Case Reports, 2022)