Foetus in foetu and the retroperitoneal teratoma.
D005333:Fetus; D006801:Humans; D008499:Medical Records; D009369:Neoplasms; D012187:Retroperitoneal Space; D013724:Teratoma; D014427:Twins
FETUS; RETROPERITONEAL SPACE/neoplasms; TERATOID TUMOR/case reports; TWINS